What is the hottest month in Delavan?

July is the warmest month in Delavan, with an average high of 82.2°F.

What is the coldest month in Delavan?

January is the coldest month in Delavan, with an average low of 5.6°F.

What month does Delavan get the most rain?

June is typically the wettest month in Delavan, with about 5.05 inches of precipitation.

What plant hardiness zone is Delavan in?

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

Has the climate in Delavan changed recently?

12.8% of Delavan'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.

Delavan, MN

Climate overview — based on NOAA 1991-2020 normals from WINNEBAGO, MN US.

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

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Delavan has an annual average temperature of 45.6°F with about 34 inches of precipitation per year and 47.2 inches of snow. The warmest month is July (average high 82.2°F), and the coldest is January (average low 5.6°F). June is typically the wettest month (5.05 in) and January the driest (0.90 in). Snow typically falls from October through April.

Pleasant months

3 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

57.9°F

warmest to coldest month

Heating need

7,479

HDD/yr

Cooling need

480

CDD/yr

Best time to visit Delavan

Full guide →

Climate change signal

All-time records →

47 of 366 (12.8%) of Delavan'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		5
1900s		12
1910s		41
1920s		20
1930s		79
1940s		24
1950s		19
1960s		14
1970s		14
1980s		25
1990s		18
2000s		33
2010s		26
2020s		36

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	23.2°F	5.6°F	14.4°F	0.90 in	10.4 in	8
February	27.8°F	10.3°F	19.0°F	1.03 in	9.1 in	7
March	40.4°F	23.3°F	31.8°F	1.88 in	7.3 in	8
April	56.1°F	35.7°F	45.9°F	3.48 in	4.1 in	11
May	68.8°F	48.2°F	58.5°F	4.51 in	—	13
June	78.8°F	59.0°F	68.9°F	5.05 in	—	12
July	82.2°F	62.4°F	72.3°F	4.18 in	—	9
August	79.7°F	59.9°F	69.8°F	3.94 in	—	9
September	73.7°F	51.4°F	62.6°F	3.47 in	—	9
October	59.9°F	37.9°F	48.9°F	2.67 in	0.4 in	9
November	42.7°F	25.0°F	33.9°F	1.64 in	5.4 in	7
December	28.7°F	12.6°F	20.7°F	1.24 in	10.5 in	8