What is the hottest month in Stewartville?

July is the warmest month in Stewartville, with an average high of 80.3°F.

What is the coldest month in Stewartville?

January is the coldest month in Stewartville, with an average low of 7.0°F.

What month does Stewartville get the most rain?

June is typically the wettest month in Stewartville, with about 5.35 inches of precipitation.

What plant hardiness zone is Stewartville in?

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

Has the climate in Stewartville changed recently?

10.9% of Stewartville'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.

Stewartville, MN

Climate overview — based on NOAA 1991-2020 normals from ROCHESTER INTL AP, MN US.

Dfb Warm-summer humid continental climate 6a USDA hardiness Zone 6a

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Stewartville has an annual average temperature of 44.8°F with about 34.7 inches of precipitation per year and 53.1 inches of snow. The warmest month is July (average high 80.3°F), and the coldest is January (average low 7.0°F). June is typically the wettest month (5.35 in) and January the driest (0.99 in). Snow typically falls from October through May.

Pleasant months

3 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

55.8°F

warmest to coldest month

Heating need

7,611

HDD/yr

Cooling need

336

CDD/yr

Best time to visit Stewartville

Full guide →

Climate change signal

All-time records →

40 of 366 (10.9%) of Stewartville'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		7
1900s		14
1910s		45
1920s		1
1930s		81
1940s		35
1950s		34
1960s		18
1970s		9
1980s		24
1990s		15
2000s		23
2010s		27
2020s		33

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	22.5°F	7.0°F	14.7°F	0.99 in	12.2 in	9
February	26.7°F	10.7°F	18.7°F	1.02 in	10.7 in	8
March	39.9°F	23.4°F	31.7°F	2.02 in	8.6 in	10
April	55.3°F	35.1°F	45.2°F	3.52 in	3.3 in	12
May	68.0°F	47.1°F	57.6°F	4.35 in	0.5 in	13
June	77.6°F	57.5°F	67.5°F	5.35 in	—	13
July	80.3°F	60.8°F	70.5°F	4.19 in	—	11
August	78.0°F	58.3°F	68.2°F	4.12 in	—	10
September	71.8°F	50.4°F	61.1°F	3.60 in	—	9
October	57.9°F	38.0°F	47.9°F	2.43 in	0.9 in	10
November	41.7°F	25.6°F	33.6°F	1.80 in	4.5 in	9
December	28.0°F	13.6°F	20.8°F	1.28 in	12.4 in	10