View Monthly Charts

The following tables present IEM computed monthly data summaries based on daily data provided by or computed for the IEM. A download interface exists for the daily summary information. The climatology is provided by the nearest NCEI climate station () within the current 1991-2020 dataset.

To load shown data into Microsoft Excel, highlight the table information with your mouse and then copy/paste into Excel.

Precipitation Totals [inch]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	0.00	M	M	M	M	M	0.00	0.00	M	M	M	M
1974	M	M	M	M	M	0.00	0.00	0.00	0.00	M	M	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	0.00	M	M	M	0.00
1978	0.00	M	M	0.00	0.00	0.00	0.00	0.00	M	M	0.00	0.00
1979	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1980	M	0.00	M	M	0.00	0.00	M	0.00	0.00	0.00	0.00	0.00
1981	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	M	0.00	M
1982	0.00	M	M	0.00	M	0.00	M	0.00	0.00	0.00	0.00	0.00
1983	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	M
1984	0.00	M	0.00	0.00	M	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1985	0.00	M	M	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1986	0.00	0.00	0.00	0.00	0.00	0.00	0.00	M	0.00	0.00	0.00	0.00
1987	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1988	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1989	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1990	M	M	M	M	M	M	M	M	M	M	M	M
1991	M	M	M	M	M	M	M	M	M	M	M	M
1992	M	M	M	M	M	M	M	M	M	M	M	M
1993	0.00	M	M	M	M	M	M	M	M	0.00	M	M
1994	M	M	M	M	M	M	M	M	0.00	M	M	M
1995	M	M	M	M	M	M	M	0.00	0.00	0.00	0.00	0.00
1996	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1997	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	M	M	M
1998	0.00	0.00	M	M	M	M	M	M	M	M	0.00	M
1999	M	M	M	M	M	0.00	M	M	0.00	M	0.00	M
2000	0.00	M	M	0.00	M	M	0.00	M	0.00	M	0.00	0.00
2001	0.00	0.00	0.00	M	M	0.00	M	0.00	M	M	0.00	0.00
2002	M	0.00	0.00	M	M	M	M	M	M	M	M	M
2003	M	M	M	M	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	M	M	M	M	M	M	M	M	M	M	M	M
2006	M	M	M	M	M	M	M	M	M	M	M	M
2007	M	0.00	M	M	M	M	M	M	M	M	M	M
2008	M	M	M	M	M	M	M	M	M	M	M	M
2009	0.00	0.00	0.00	0.00	M	M	M	M	M	M	M	M
2010	M	M	M	M	M	M	M	M	M	M	M	M
2011	M	M	M	M	M	M	M	0.00	0.00	0.00	0.00	0.00
2012	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2013	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	M	M	M
2014	M	M	M	M	M	M	M	M	M	M	M	M
2015	M	M	M	M	M	M	M	M	M	M	M	M
2016	M	M	M	M	M	0.00	0.00	M	M	M	M	M
2017	M	M	M	M	M	M	0.00	M	M	M	M	M
2018	M	M	M	M	M	M	M	M	M	M	M	M
2019	M	M	M	M	M	M	M	M	M	M	M	M
2020	M	M	M	M	M	M	M	M	M	M	M	M
2021	M	M	M	M	M	M	M	M	M	M	M	M
2022	M	M	M	M	M	M	M	M	M	M	M	M
2023	M	M	M	M	M	M	M	M	M	M	M	M
2024	M	M	M	M	M	M	M	M	M	M	M	M
2025	M	M	M	M	M	M	M	M	M	M	M	M

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	M	M	M	M	M	M	M	M	M	M	M	M
1974	M	M	M	M	M	M	M	M	M	M	M	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	2.0	M	1.3	2.4	1.9	M	2.1	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	4.3
1987	2.1	M	2.5	3.2	1.8	2.3	3.0	2.9	3.9	3.4	5.3	5.1
1988	3.5	2.6	2.1	2.4	2.6	M	M	M	M	M	M	M
1989	M	2.9	M	M	M	0.9	M	2.9	M	3.1	3.2	3.5
1990	M	M	M	M	M	M	M	M	M	M	M	M
1991	M	M	M	M	M	M	M	M	M	M	M	M
1992	M	M	M	M	M	M	M	M	M	M	M	M
1993	M	M	M	M	M	M	M	M	M	M	M	M
1994	M	M	M	M	M	M	M	M	M	M	M	M
1995	M	M	M	M	M	M	M	4.9	6.2	6.0	7.9	4.8
1996	51.2	32.3	37.9	25.9	29.6	23.1	3.6	4.7	5.6	7.1	6.9	5.4
1997	4.1	4.9	4.9	4.1	3.5	4.6	4.5	5.3	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	M
1999	M	M	M	M	M	M	M	M	M	M	M	M
2000	M	M	M	M	M	M	M	M	5.8	M	M	M
2001	3.4	3.4	M	M	M	M	M	M	M	M	M	M
2002	M	M	10.4	M	M	M	M	M	M	M	M	M
2003	M	M	M	M	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	M	M	M	M	M	M	M	M	M	M	M	M
2006	M	M	M	M	M	M	M	M	M	M	M	M
2007	M	M	M	M	M	3.5	2.9	3.4	3.7	4.2	4.4	3.9
2008	3.1	3.6	3.3	3.2	2.8	2.5	2.6	2.9	3.3	2.5	2.6	2.2
2009	2.1	2.3	2.4	2.2	2.1	2.1	2.2	2.6	3.0	2.9	3.2	2.7
2010	2.2	2.6	2.5	2.1	1.9	2.3	3.0	2.6	2.7	3.2	3.0	2.5
2011	2.5	2.7	2.7	2.4	2.2	2.1	2.2	2.6	2.9	3.1	2.7	3.3
2012	2.5	2.3	2.3	2.0	2.0	2.1	2.0	2.4	2.7	3.1	2.8	2.4
2013	2.5	2.3	2.3	2.0	1.8	2.0	2.0	2.2	4.1	3.1	2.6	2.9
2014	2.4	2.6	2.6	2.1	1.9	2.1	2.3	2.2	2.7	2.4	2.9	2.8
2015	2.4	2.4	2.3	2.3	1.6	2.5	3.5	4.2	5.0	3.9	4.3	4.0
2016	3.9	3.1	2.4	2.1	2.0	1.8	2.1	2.6	2.7	3.2	3.2	2.7
2017	2.4	2.6	2.4	1.9	1.9	1.7	1.9	2.8	3.1	3.6	4.4	3.2
2018	2.9	2.5	2.6	2.5	1.9	1.8	1.8	3.0	4.2	6.8	4.3	3.4
2019	3.8	3.8	4.3	3.9	3.2	3.2	2.9	3.9	3.7	3.6	2.4	3.6
2020	3.5	3.9	3.4	2.8	2.6	2.7	3.6	3.9	3.8	3.6	3.5	3.2
2021	2.8	3.2	4.6	2.3	2.6	2.5	2.7	3.2	3.3	3.4	3.1	3.2
2022	2.8	2.7	2.8	2.9	2.8	3.2	4.5	3.6	4.5	3.9	3.4	3.5
2023	2.7	3.0	3.4	3.1	3.1	2.9	2.9	4.5	4.6	5.2	4.9	4.0
2024	3.6	2.2	3.6	3.6	4.3	3.6	3.8	4.4	6.5	6.5	6.4	4.5
2025	3.6	4.1	4.2	3.7	3.3	3.5	3.7	3.8	4.9	5.6	5.7	5.3

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	88.00	M	M	M	M	M	86.00	88.00	M	M	M	M
1974	M	M	M	M	M	82.50	84.36	87.36	87.14	M	M	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	88.67	M	M	M	88.00
1978	87.00	M	M	86.00	88.00	86.00	90.00	88.00	M	M	88.00	85.75
1979	84.61	83.41	85.52	85.73	85.86	88.96	88.90	89.04	88.76	88.11	87.28	88.00
1980	M	79.00	M	M	89.00	86.67	M	89.43	90.73	90.23	89.31	88.60
1981	84.19	83.67	84.78	86.47	87.12	88.06	88.82	90.75	88.71	M	86.00	M
1982	83.00	M	M	78.00	M	88.00	M	89.00	92.00	91.00	84.00	89.50
1983	87.82	90.80	86.89	90.00	90.00	88.33	89.00	87.00	91.00	90.50	91.50	M
1984	84.50	M	84.00	85.33	M	87.00	87.00	89.00	91.00	89.75	88.42	85.11
1985	86.00	M	M	83.75	85.43	86.57	86.40	90.50	90.82	90.50	87.12	87.00
1986	86.22	85.89	85.36	86.18	87.18	87.40	87.80	M	90.25	89.14	87.40	88.25
1987	87.33	86.75	86.64	89.42	89.59	89.25	89.28	89.60	90.80	90.97	91.41	91.00
1988	86.71	85.79	84.29	84.60	87.00	86.23	88.25	90.80	90.44	89.36	88.25	86.33
1989	84.50	83.93	82.50	84.92	84.44	85.93	85.69	90.06	91.38	89.83	88.07	86.65
1990	M	M	M	M	M	M	M	M	M	M	M	M
1991	M	M	M	M	M	M	M	M	M	M	M	M
1992	M	M	M	M	M	M	M	M	M	M	M	M
1993	86.00	M	M	M	M	M	M	M	M	94.00	M	M
1994	M	M	M	M	M	M	M	M	90.00	M	M	M
1995	M	M	M	M	M	M	M	92.23	93.96	92.33	85.00	88.33
1996	87.35	83.19	82.70	84.93	86.35	89.03	87.89	90.81	92.00	91.84	90.41	88.23
1997	85.90	86.33	85.55	87.47	88.16	90.10	90.30	91.39	94.00	M	M	M
1998	81.00	86.50	M	M	M	M	M	M	M	M	94.00	M
1999	M	M	M	M	M	92.00	M	M	87.00	M	87.00	M
2000	79.00	M	M	89.00	M	M	91.00	M	90.62	M	91.00	90.00
2001	88.00	82.50	87.00	M	M	89.50	M	94.00	M	M	93.00	94.00
2002	M	85.40	87.33	M	M	M	M	M	M	M	M	M
2003	M	M	M	71.60	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	M	M	M	M	M	M	M	M	M	M	M	M
2006	M	M	M	M	M	M	M	M	M	M	M	M
2007	M	81.00	M	M	M	M	M	M	M	M	M	M
2008	M	M	M	M	M	M	M	M	M	M	M	M
2009	87.33	88.75	89.73	87.48	M	M	M	M	M	M	82.40	M
2010	80.60	M	M	M	86.00	M	M	90.50	M	M	77.00	88.55
2011	84.68	M	M	75.20	74.30	79.70	M	92.84	94.34	93.14	89.78	92.27
2012	86.81	85.81	87.22	88.16	88.44	88.82	89.96	91.52	90.86	87.34	90.92	84.92
2013	86.72	87.09	87.34	87.50	88.09	88.58	88.79	90.99	91.40	92.45	90.26	91.28
2014	87.16	86.77	87.28	88.04	88.03	89.08	89.38	90.70	92.84	91.98	93.50	93.03
2015	89.37	86.86	87.74	88.70	88.38	89.36	89.72	93.20	95.60	95.17	94.69	93.08
2016	90.24	89.23	87.86	87.97	89.08	89.06	90.76	92.91	91.10	91.54	92.27	90.30
2017	87.68	86.58	87.97	88.76	88.73	89.78	92.04	94.88	94.58	94.54	94.10	90.70
2018	89.89	86.71	87.68	87.08	88.55	89.66	89.60	92.68	92.84	92.71	91.85	87.39
2019	87.51	87.22	87.92	87.74	89.54	90.68	90.53	92.85	93.65	92.75	93.20	90.53
2020	87.80	86.16	86.46	87.08	87.74	88.70	91.81	92.64	92.89	93.82	88.64	88.38
2021	86.64	86.00	87.28	87.44	88.96	88.94	90.18	92.85	92.12	92.10	90.14	88.73
2022	86.35	87.93	87.22	88.58	87.48	89.60	M	94.29	93.14	91.46	90.68	88.55
2023	88.03	88.19	88.61	88.46	90.35	90.02	92.10	95.64	96.98	97.50	96.86	94.01
2024	91.28	87.44	87.16	87.50	88.21	89.95	91.92	92.33	94.46	93.26	92.66	87.92
2025	85.13	85.36	85.88	87.20	87.57	87.32	89.25	90.47	92.00	93.43	92.36	87.58

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	77.00	M	M	M	M	M	73.00	73.00	M	M	M	M
1974	M	M	M	M	M	72.50	72.18	71.86	73.43	M	M	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	77.00	M	M	M	79.00
1978	77.00	M	M	77.00	77.00	73.00	77.00	73.00	M	M	79.00	74.17
1979	73.93	73.59	74.00	74.73	73.82	71.78	71.50	71.77	73.76	74.89	74.89	79.00
1980	M	75.00	M	M	78.00	76.33	M	74.00	74.73	76.23	73.62	75.85
1981	74.48	73.83	75.67	75.00	75.29	73.18	71.73	73.00	73.71	M	73.00	M
1982	76.00	M	M	76.00	M	77.00	M	79.50	76.00	80.00	77.00	77.67
1983	78.91	79.80	78.11	80.00	81.00	78.67	77.00	78.33	81.00	80.00	78.83	M
1984	75.50	M	76.00	76.33	M	75.50	77.00	78.43	80.00	79.12	79.83	77.11
1985	75.25	M	M	76.50	75.86	75.71	74.00	74.75	75.55	76.88	77.38	75.67
1986	76.44	73.11	75.55	75.36	76.45	75.40	75.40	M	75.00	77.29	75.70	74.58
1987	75.44	75.92	75.41	75.42	75.81	74.50	75.79	73.17	74.47	75.72	77.18	76.79
1988	75.10	75.88	75.14	74.90	75.29	74.69	74.17	72.80	75.56	76.45	75.08	74.00
1989	73.86	74.40	73.00	75.46	74.06	73.79	74.54	73.38	73.46	74.83	74.80	74.76
1990	M	M	M	M	M	M	M	M	M	M	M	M
1991	M	M	M	M	M	M	M	M	M	M	M	M
1992	M	M	M	M	M	M	M	M	M	M	M	M
1993	77.00	M	M	M	M	M	M	M	M	77.00	M	M
1994	M	M	M	M	M	M	M	M	78.00	M	M	M
1995	M	M	M	M	M	M	M	74.73	76.71	75.33	76.50	73.85
1996	76.58	77.62	76.47	76.67	78.06	77.67	70.43	72.45	73.93	75.61	75.30	74.23
1997	73.60	73.57	73.79	73.43	73.29	72.24	70.89	71.70	81.00	M	M	M
1998	79.00	78.50	M	M	M	M	M	M	M	M	79.00	M
1999	M	M	M	M	M	78.00	M	M	73.00	M	78.50	M
2000	74.00	M	M	78.00	M	M	79.00	M	74.50	M	80.00	77.00
2001	76.00	74.00	77.00	M	M	78.50	M	70.00	M	M	77.00	77.00
2002	M	75.00	77.00	M	M	M	M	M	M	M	M	M
2003	M	M	M	71.60	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	M	M	M	M	M	M	M	M	M	M	M	M
2006	M	M	M	M	M	M	M	M	M	M	M	M
2007	M	72.00	M	M	M	M	M	M	M	M	M	M
2008	M	M	M	M	M	M	M	M	M	M	M	M
2009	72.83	73.33	74.09	75.08	M	M	M	M	M	M	82.40	M
2010	80.60	M	M	M	86.00	M	M	90.50	M	M	76.10	73.28
2011	73.04	M	M	75.20	74.30	79.70	M	71.24	72.08	72.94	72.14	72.82
2012	73.05	72.34	72.99	73.82	73.46	71.66	70.58	68.12	70.40	72.01	72.74	72.50
2013	74.34	73.40	74.27	72.56	73.23	72.38	71.43	71.60	71.60	71.95	72.26	72.12
2014	72.12	73.27	73.63	73.82	73.34	72.13	69.80	69.51	71.00	71.95	72.26	72.82
2015	72.12	72.39	73.86	73.88	73.23	71.36	70.55	69.34	72.62	74.04	74.70	74.91
2016	75.03	74.70	75.08	75.20	74.56	71.24	70.32	70.96	71.90	72.92	74.20	73.46
2017	72.94	73.85	74.27	74.24	73.92	71.66	68.41	71.54	72.80	74.45	77.00	75.03
2018	73.98	74.04	74.15	73.54	73.57	71.42	70.55	75.08	77.06	79.62	79.70	75.32
2019	75.90	76.16	76.13	76.70	77.19	75.92	74.91	76.01	78.17	79.33	78.12	76.13
2020	74.97	75.90	75.32	76.22	77.93	76.52	76.83	72.97	75.08	75.48	75.32	74.27
2021	73.98	74.49	74.21	74.90	74.79	73.22	72.06	72.65	73.58	74.97	75.02	75.95
2022	73.98	74.30	74.56	75.14	75.07	73.85	M	72.31	75.08	75.08	75.02	74.15
2023	74.04	74.04	74.50	74.72	75.49	72.92	72.18	72.59	75.62	77.17	77.42	76.30
2024	75.66	75.80	76.01	75.98	76.71	75.41	71.48	72.41	77.06	76.71	77.00	76.25
2025	74.62	75.07	75.03	74.72	75.26	73.94	71.72	72.99	75.08	75.72	76.10	76.21

Average Daily Temperature (high+low)/2 [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	82.50	M	M	M	M	M	79.50	80.50	M	M	M	M
1974	M	M	M	M	M	77.50	78.27	79.61	80.29	M	M	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	82.83	M	M	M	83.50
1978	82.00	M	M	81.50	82.50	79.50	83.50	80.50	M	M	83.50	79.96
1979	79.27	78.50	79.76	80.23	79.84	80.37	80.20	80.40	81.26	81.50	81.08	83.50
1980	M	77.00	M	M	83.50	81.50	M	81.72	82.73	83.23	81.47	82.22
1981	79.33	78.75	80.22	80.74	81.21	80.62	80.27	81.88	81.21	M	79.50	M
1982	79.50	M	M	77.00	M	82.50	M	84.25	84.00	85.50	80.50	83.58
1983	83.36	85.30	82.50	85.00	85.50	83.50	83.00	82.67	86.00	85.25	85.17	M
1984	80.00	M	80.00	80.83	M	81.25	82.00	83.71	85.50	84.44	84.12	81.11
1985	80.62	M	M	80.12	80.64	81.14	80.20	82.62	83.18	83.69	82.25	81.33
1986	81.33	79.50	80.45	80.77	81.82	81.40	81.60	M	82.62	83.21	81.55	81.42
1987	81.39	81.33	81.02	82.42	82.70	81.88	82.53	81.38	82.63	83.34	84.30	83.90
1988	80.90	80.83	79.71	79.75	81.15	80.46	81.21	81.80	83.00	82.91	81.67	80.17
1989	79.18	79.17	77.75	80.19	79.25	79.86	80.12	81.72	82.42	82.33	81.43	80.71
1990	M	M	M	M	M	M	M	M	M	M	M	M
1991	M	M	M	M	M	M	M	M	M	M	M	M
1992	M	M	M	M	M	M	M	M	M	M	M	M
1993	81.50	M	M	M	M	M	M	M	M	85.50	M	M
1994	M	M	M	M	M	M	M	M	84.00	M	M	M
1995	M	M	M	M	M	M	M	83.48	85.33	83.83	80.75	81.09
1996	81.96	80.41	79.58	80.80	82.21	83.35	79.16	81.63	82.97	83.73	82.85	81.23
1997	79.75	79.95	79.67	80.45	80.73	81.17	80.59	81.54	87.50	M	M	M
1998	80.00	82.50	M	M	M	M	M	M	M	M	86.50	M
1999	M	M	M	M	M	85.00	M	M	80.00	M	82.75	M
2000	76.50	M	M	83.50	M	M	85.00	M	82.56	M	85.50	83.50
2001	82.00	78.25	82.00	M	M	84.00	M	82.00	M	M	85.00	85.50
2002	M	80.20	82.17	M	M	M	M	M	M	M	M	M
2003	M	M	M	71.60	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	M	M	M	M	M	M	M	M	M	M	M	M
2006	M	M	M	M	M	M	M	M	M	M	M	M
2007	M	76.50	M	M	M	M	M	M	M	M	M	M
2008	M	M	M	M	M	M	M	M	M	M	M	M
2009	80.08	81.04	81.91	81.28	M	M	M	M	M	M	82.40	M
2010	80.60	M	M	M	86.00	M	M	90.50	M	M	76.55	80.92
2011	78.86	M	M	75.20	74.30	79.70	M	82.04	83.21	83.04	80.96	82.55
2012	79.93	79.08	80.11	80.99	80.95	80.24	80.27	79.82	80.63	79.67	81.83	78.71
2013	80.53	80.25	80.80	80.03	80.66	80.48	80.11	81.30	81.50	82.20	81.26	81.70
2014	79.64	80.02	80.45	80.93	80.69	80.60	79.59	80.11	81.92	81.96	82.88	82.92
2015	80.75	79.63	80.80	81.29	80.80	80.36	80.14	81.27	84.11	84.61	84.70	84.00
2016	82.63	81.97	81.47	81.59	81.82	80.15	80.54	81.94	81.50	82.23	83.23	81.88
2017	80.31	80.21	81.12	81.50	81.33	80.72	80.22	83.21	83.69	84.49	85.55	82.86
2018	81.94	80.38	80.92	80.31	81.06	80.54	80.08	83.88	84.95	86.16	85.77	81.35
2019	81.70	81.69	82.02	82.22	83.36	83.30	82.72	84.43	85.91	86.04	85.66	83.33
2020	81.38	81.03	80.89	81.65	82.84	82.61	84.32	82.80	83.98	84.65	81.98	81.33
2021	80.31	80.25	80.75	81.17	81.88	81.08	81.12	82.75	82.85	83.53	82.58	82.34
2022	80.16	81.11	80.89	81.86	81.28	81.72	M	83.30	84.11	83.27	82.85	81.35
2023	81.04	81.11	81.56	81.59	82.92	81.47	82.14	84.11	86.30	87.34	87.14	85.16
2024	83.47	81.62	81.59	81.74	82.46	82.68	81.70	82.37	85.76	84.98	84.83	82.08
2025	79.87	80.21	80.45	80.96	81.41	80.63	80.48	81.73	83.54	84.58	84.23	81.90

Average Relative Humidity [%]

This value is computed via a simple average of available observations weighted by the duration between observations.

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	M	M	M	M	M	M	M	M	M	M	M	M
1974	M	M	M	M	M	M	M	M	M	M	M	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	82.8%	M	82.9%	88.5%	82.3%	M	88.0%	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	82.8%
1987	83.3%	M	82.5%	84.4%	85.2%	83.0%	79.3%	80.1%	77.9%	77.2%	76.0%	78.0%
1988	81.8%	86.8%	92.5%	87.3%	81.9%	M	M	M	M	M	M	M
1989	M	87.1%	M	M	M	84.4%	M	78.3%	M	81.4%	81.0%	83.9%
1990	M	M	M	M	M	M	M	M	M	M	M	M
1991	M	M	M	M	M	M	M	M	M	M	M	M
1992	M	M	M	M	M	M	M	M	M	M	M	M
1993	M	M	M	M	M	M	M	M	M	M	M	M
1994	M	M	M	M	M	M	M	M	M	M	M	M
1995	M	M	M	M	M	M	M	76.2%	75.9%	73.3%	69.0%	84.5%
1996	81.3%	82.4%	84.6%	83.1%	81.2%	76.9%	84.3%	80.3%	76.6%	75.7%	78.2%	82.7%
1997	86.0%	85.0%	86.9%	85.6%	84.6%	80.3%	78.6%	79.7%	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	M
1999	M	M	M	M	M	M	M	M	M	M	M	M
2000	M	M	M	M	M	M	M	M	76.1%	M	M	M
2001	77.9%	88.8%	M	M	M	M	M	M	M	M	M	M
2002	M	M	87.2%	M	M	M	M	M	M	M	M	M
2003	M	M	M	M	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	M	M	M	M	M	M	M	M	M	M	M	M
2006	M	M	M	M	M	M	M	M	M	M	M	M
2007	M	M	M	M	M	78.6%	82.7%	79.7%	79.7%	82.0%	80.2%	84.5%
2008	88.1%	86.0%	88.9%	87.6%	87.9%	85.6%	82.5%	80.3%	79.4%	85.0%	83.8%	88.9%
2009	91.1%	90.7%	91.1%	92.4%	92.5%	90.4%	87.7%	84.4%	80.4%	78.6%	79.3%	87.2%
2010	90.2%	91.0%	89.2%	91.6%	90.1%	85.5%	79.2%	84.1%	84.1%	80.6%	83.9%	89.5%
2011	92.1%	92.1%	91.6%	92.4%	91.9%	89.4%	86.8%	84.8%	81.8%	82.0%	87.2%	82.4%
2012	91.3%	91.9%	92.4%	92.1%	91.1%	89.9%	88.4%	83.9%	83.4%	85.0%	84.4%	91.9%
2013	93.0%	92.6%	93.6%	93.5%	92.4%	90.7%	89.9%	87.9%	80.5%	85.4%	88.6%	86.2%
2014	91.1%	93.5%	93.2%	92.9%	92.8%	90.6%	88.6%	87.8%	85.5%	87.2%	84.7%	84.0%
2015	88.9%	92.0%	91.3%	91.3%	92.6%	90.5%	88.7%	85.3%	80.1%	78.5%	76.2%	79.7%
2016	87.1%	90.6%	93.6%	93.8%	89.6%	86.3%	84.7%	82.1%	83.1%	81.9%	82.8%	85.3%
2017	88.5%	90.5%	89.0%	89.3%	89.2%	86.8%	80.7%	79.5%	80.4%	78.1%	72.1%	80.5%
2018	85.9%	89.4%	88.8%	88.7%	87.9%	85.3%	85.6%	79.4%	78.2%	71.6%	75.5%	85.2%
2019	84.6%	87.8%	86.1%	87.3%	84.1%	82.2%	81.0%	75.5%	73.8%	74.2%	76.3%	82.8%
2020	86.4%	88.7%	86.2%	87.2%	85.4%	82.8%	72.5%	74.7%	76.5%	74.8%	82.7%	84.8%
2021	87.1%	88.1%	86.8%	87.5%	85.3%	85.0%	82.8%	78.8%	80.6%	79.8%	84.3%	87.1%
2022	87.9%	86.1%	87.2%	85.9%	86.1%	85.2%	M	78.6%	77.3%	79.1%	80.4%	84.5%
2023	85.9%	86.6%	84.7%	87.0%	84.9%	84.1%	81.1%	75.0%	73.4%	70.3%	70.8%	79.3%
2024	83.9%	84.0%	88.6%	89.5%	88.2%	83.9%	76.0%	78.0%	73.4%	74.5%	73.9%	83.8%
2025	89.3%	88.6%	87.4%	86.5%	87.3%	85.2%	81.4%	80.6%	76.1%	72.4%	73.5%	80.4%

Monthly Plots

Select month and year:

Nov 2025

JanFebMarAprMayJunJulAugSepOctNovDec 19731974197519761977197819791980198119821983198419851986198719881989199019911992199319941995199619971998199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025

Jan 2026