What is the hottest month in McGregor?

July is the warmest month in McGregor, with an average high of 83.1°F.

What is the coldest month in McGregor?

January is the coldest month in McGregor, with an average low of 9.7°F.

What month does McGregor get the most rain?

June is typically the wettest month in McGregor, with about 5.83 inches of precipitation.

What plant hardiness zone is McGregor in?

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

McGregor, IA

Climate overview — based on NOAA 1991-2020 normals from PRAIRIE DU CHIEN, WI US.

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

Year-round temperatures (°F)

Avg high Avg low

Climate summary

McGregor has an annual average temperature of 47.7°F with about 37.7 inches of precipitation per year and 33.8 inches of snow. The warmest month is July (average high 83.1°F), and the coldest is January (average low 9.7°F). June is typically the wettest month (5.83 in) and January the driest (1.22 in). Snow typically falls from October through April.

Pleasant months

2 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

54.7°F

warmest to coldest month

Heating need

6,786

HDD/yr

Cooling need

552

CDD/yr

Best time to visit McGregor

Full guide →

Climate change signal

All-time records →

28 of 366 (7.7%) of McGregor'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		48
1900s		48
1910s		33
1920s		15
1930s		49
1940s		22
1950s		17
1960s		10
1970s		12
1980s		27
1990s		19
2000s		25
2010s		21
2020s		20

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	27.1°F	9.7°F	18.4°F	1.22 in	9.0 in	8
February	32.1°F	13.3°F	22.7°F	1.26 in	8.6 in	7
March	44.9°F	24.9°F	34.9°F	2.05 in	4.3 in	8
April	58.6°F	36.6°F	47.6°F	4.04 in	1.4 in	11
May	70.2°F	48.2°F	59.2°F	4.68 in	—	12
June	79.6°F	58.9°F	69.2°F	5.83 in	—	11
July	83.1°F	63.1°F	73.1°F	4.12 in	—	9
August	81.3°F	61.0°F	71.1°F	4.15 in	—	8
September	74.2°F	52.0°F	63.1°F	3.99 in	—	9
October	61.7°F	40.1°F	50.9°F	2.72 in	0.2 in	8
November	45.9°F	28.2°F	37.0°F	2.12 in	1.5 in	7
December	32.9°F	17.1°F	25.0°F	1.56 in	8.8 in	8