IEM :: Monthly Summaries

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[UNIS2] Union Center (Sdsu) [2008-]

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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 (USC00397073) 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
2011	M	M	M	M	M	M	M	M	M	M	M	0.10
2012	0.25	0.11	0.13	2.21	1.23	1.36	1.14	0.59	31.34	10.35	0.14	0.04
2013	M	0.02	0.15	0.26	2.43	1.06	2.67	1.95	1.37	2.37	0.16	0.08
2014	M	0.06	0.05	1.62	0.93	1.74	0.00	M	M	M	0.03	M
2015	M	M	M	M	M	M	M	M	M	M	M	M
2016	M	M	M	M	M	M	M	M	M	M	M	M
2017	M	M	M	M	M	M	M	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	0.88	1.71	0.58	1.27	0.89	0.73	0.11	1.24
2023	0.27	0.27	0.49	0.26	5.79	3.97	0.90	0.91	1.96	1.00	M	M
2024	M	M	M	M	M	M	M	M	M	M	M	M
2025	M	M	M	M	M	M	1.96	0.04	M	M	M	M
NCEI Climatology	0.41	0.54	0.95	1.98	3.69	3.13	2.46	1.63	1.29	1.61	0.61	0.59

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2011	M	M	M	M	M	M	M	M	M	M	M	M
2012	M	M	M	M	M	M	M	M	M	M	M	M
2013	M	M	M	M	M	M	M	M	M	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	M	M	M	M	M	M	M
2017	M	M	M	M	M	M	M	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
NCEI Climatology	M	M	M	M	M	M	M	M	M	M	M	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2011	M	M	M	M	M	M	M	M	M	M	M	49.37
2012	43.95	43.02	66.48	64.52	68.83	87.51	95.55	90.18	82.90	62.01	53.40	47.69
2013	M	M	M	M	M	M	M	M	M	M	M	M
2014	M	M	M	M	M	M	76.10	76.82	73.04	62.25	35.73	M
2015	M	M	M	M	M	M	M	M	M	M	M	M
2016	M	M	M	M	M	M	M	M	M	M	M	M
2017	M	M	M	M	M	M	M	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	62.88	76.38	88.56	88.81	80.03	61.26	38.64	25.36
2023	33.07	36.42	33.51	52.92	70.85	76.08	83.07	83.06	76.32	59.40	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
NCEI Climatology	31.90	35.32	45.01	56.00	66.10	76.59	85.10	84.60	75.30	60.31	45.70	34.50

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2011	M	M	M	M	M	M	M	M	M	M	M	25.41
2012	13.78	14.48	31.51	35.18	41.12	55.70	64.70	57.25	49.40	32.49	20.57	18.71
2013	M	M	M	M	M	M	M	M	M	M	M	M
2014	M	M	M	M	M	M	66.00	57.32	49.77	40.74	18.17	M
2015	M	M	M	M	M	M	M	M	M	M	M	M
2016	M	M	M	M	M	M	M	M	M	M	M	M
2017	M	M	M	M	M	M	M	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	43.94	52.77	61.33	61.39	52.27	37.61	18.11	8.75
2023	17.05	15.46	16.91	30.22	49.06	55.81	58.20	58.88	52.33	37.74	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
NCEI Climatology	8.99	11.32	20.40	29.50	40.80	51.29	57.29	54.20	44.10	31.50	19.50	11.10

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2011	M	M	M	M	M	M	M	M	M	M	M	37.39
2012	28.87	28.75	48.99	49.85	54.98	71.61	80.12	73.71	66.15	47.25	36.98	33.20
2013	M	M	M	M	M	M	M	M	M	M	M	M
2014	M	M	M	M	M	M	71.05	67.07	61.40	51.49	26.95	M
2015	M	M	M	M	M	M	M	M	M	M	M	M
2016	M	M	M	M	M	M	M	M	M	M	M	M
2017	M	M	M	M	M	M	M	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	53.41	64.57	74.95	75.10	66.15	49.43	28.37	17.05
2023	25.06	25.94	25.21	41.57	59.96	65.95	70.64	70.97	64.33	48.57	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
NCEI Climatology	20.45	23.32	32.71	42.75	53.45	63.94	71.20	69.40	59.70	45.90	32.60	22.80

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
2011	M	M	M	M	M	M	M	M	M	M	M	M
2012	M	M	M	M	M	M	M	M	M	M	M	M
2013	M	M	M	M	M	M	M	M	M	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	M	M	M	M	M	M	M
2017	M	M	M	M	M	M	M	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