Omaha climate

Name: Omaha
Address: US

Omaha is warmest in July, with average highs of 30 °C, and coldest in January, when nights average -8.7 °C. May is the wettest month (139 mm) and January the driest (26 mm). Figures are 1991–2020 climate normals.

Across a full year Omaha averages 893 mm of rain, 112 days above 25 °C and 116 days below freezing.

United States · 323 m elevation · population 486,051 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 30 °C
Coldest month January -8.7 °C
Driest month January 26 mm
Wettest month May 139 mm
Least cloud September 40 % cloud
Hottest on record July 39 °C
Coldest on record January -36 °C

What to expectOmaha through the year

Omaha has a clear annual cycle: average daily highs run from 0.6 °C in January to 30 °C in July, a swing of 30 °C in mean temperature across the year.

Counted across a normal year, 112 days a year reach 25 °C, 43 of them reach 30 °C, 116 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in July.

Rain is strongly seasonal. May averages 139 mm against 26 mm in January — 5.4 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	0.6 °C	26 mm	57 %
February	3.4 °C	33 mm	57 %
March	10.7 °C	61 mm	57 %
April	17.1 °C	103 mm	59 %
May	22.6 °C	139 mm	59 %
June	27.7 °C	128 mm	51 %
July	30.1 °C	87 mm	45 %
August	29.0 °C	90 mm	46 %
September	25.3 °C	78 mm	40 %
October	18.0 °C	66 mm	46 %
November	9.7 °C	44 mm	51 %
December	2.6 °C	36 mm	55 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	0.6 °C	-8.7 °C	-4.9 °C	16.1 °C	-36.2 °C	0	0	29
February	3.4 °C	-6.8 °C	-2.6 °C	20.3 °C	-35.7 °C	0	0	24
March	10.7 °C	-0.6 °C	4.1 °C	29.1 °C	-29.1 °C	0	0	17
April	17.1 °C	5.8 °C	10.7 °C	30.3 °C	-11.7 °C	2	0	4
May	22.6 °C	12.1 °C	16.8 °C	36.0 °C	0.1 °C	11	1	0
June	27.7 °C	17.8 °C	22.4 °C	37.5 °C	6.8 °C	23	8	0
July	30.1 °C	20.3 °C	24.9 °C	39.4 °C	10.9 °C	29	15	0
August	29.0 °C	19.3 °C	23.8 °C	37.6 °C	9.5 °C	27	12	0
September	25.3 °C	15.0 °C	19.6 °C	36.5 °C	0.9 °C	16	5	0
October	18.0 °C	8.1 °C	12.3 °C	31.9 °C	-12.7 °C	4	0	2
November	9.7 °C	0.7 °C	4.4 °C	26.1 °C	-21.8 °C	0	0	14
December	2.6 °C	-5.8 °C	-2.3 °C	18.2 °C	-28.4 °C	0	0	27

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	26 mm	5	9.5 h/day	57 %	71 %	22 km/h
February	33 mm	6	11 h/day	57 %	70 %	22 km/h
March	61 mm	8	12 h/day	57 %	67 %	23 km/h
April	103 mm	11	13 h/day	59 %	65 %	25 km/h
May	139 mm	13	15 h/day	59 %	68 %	23 km/h
June	128 mm	11	15 h/day	51 %	70 %	21 km/h
July	87 mm	9	15 h/day	45 %	70 %	18 km/h
August	90 mm	9	14 h/day	46 %	71 %	18 km/h
September	78 mm	8	12 h/day	40 %	66 %	21 km/h
October	66 mm	7	11 h/day	46 %	64 %	23 km/h
November	44 mm	6	9.9 h/day	51 %	68 %	22 km/h
December	36 mm	5	9.2 h/day	55 %	72 %	21 km/h

How Omaha compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Omaha	30 °C	-8.7 °C	893 mm	112
Lincoln · United States	31 °C	-7.6 °C	811 mm	120
Des Moines · United States	29 °C	-9.5 °C	944 mm	102
Sioux Falls · United States	28 °C	-12 °C	798 mm	87
Kansas City · United States	31 °C	-5.1 °C	1,043 mm	127

Where Omaha ranks

Ranking	Position	Value
The coolest places in North America in December	30thof 50	2.6 °C
The coolest places in North America in January	35thof 50	0.6 °C
The coolest places in North America in February	41stof 50	3.4 °C
The coolest places in North America in November	45thof 50	9.7 °C

Planning a trip? See the best time to visit Omaha.

QuestionsCommon questions about Omaha’s climate

When is the best time to visit Omaha?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, September sit closest to 20 °C on average, July is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Omaha get?

In July, the warmest month, daily highs average 30 °C. About 43 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

Nights average -8.7 °C in January, the coldest month. A normal year has 116 nights below freezing.

Which month is wettest in Omaha?

May, averaging 139 mm over 13 days with rain. The driest month is January with 26 mm. The year as a whole averages 893 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Omaha rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.