What is the hottest month in Omro?

July is the warmest month in Omro, with an average high of 81.7°F.

What is the coldest month in Omro?

January is the coldest month in Omro, with an average low of 10.2°F.

What month does Omro get the most rain?

June is typically the wettest month in Omro, with about 4.82 inches of precipitation.

What plant hardiness zone is Omro in?

Omro is approximately in USDA plant hardiness Zone 6b, based on the average annual extreme minimum temperature.

Has the climate in Omro changed recently?

11.2% of Omro's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Omro, WI

Climate overview — based on NOAA 1991-2020 normals from OSHKOSH, WI US.

Dfa Hot-summer humid continental climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Omro has an annual average temperature of 46.6°F with about 33.3 inches of precipitation per year and 39.2 inches of snow. The warmest month is July (average high 81.7°F), and the coldest is January (average low 10.2°F). June is typically the wettest month (4.82 in) and February the driest (1.11 in). Snow typically falls from October through April.

Pleasant months

3 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

54.1°F

warmest to coldest month

Heating need

7,098

HDD/yr

Cooling need

468

CDD/yr

Best time to visit Omro

Full guide →

Climate change signal

All-time records →

41 of 366 (11.2%) of Omro's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1890s		20
1900s		9
1910s		33
1920s		26
1930s		66
1940s		41
1950s		26
1960s		12
1970s		15
1980s		19
1990s		16
2000s		24
2010s		32
2020s		27

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	26.1°F	10.2°F	18.1°F	1.34 in	9.8 in	9
February	29.9°F	12.9°F	21.4°F	1.11 in	10.1 in	8
March	41.3°F	23.5°F	32.4°F	1.92 in	5.4 in	9
April	54.4°F	35.7°F	45.0°F	3.21 in	1.8 in	11
May	67.3°F	48.0°F	57.7°F	3.94 in	—	12
June	77.3°F	58.8°F	68.0°F	4.82 in	—	11
July	81.7°F	62.7°F	72.2°F	3.76 in	—	10
August	79.8°F	61.0°F	70.4°F	3.40 in	—	10
September	72.5°F	52.7°F	62.6°F	3.26 in	—	9
October	59.0°F	40.8°F	49.9°F	2.89 in	0.3 in	10
November	44.2°F	28.9°F	36.6°F	2.05 in	1.8 in	9
December	31.8°F	17.5°F	24.7°F	1.59 in	10.0 in	9