What is the hottest month in Shell Lake?

July is the warmest month in Shell Lake, with an average high of 80.1°F.

What is the coldest month in Shell Lake?

January is the coldest month in Shell Lake, with an average low of 0.9°F.

What month does Shell Lake get the most rain?

June is typically the wettest month in Shell Lake, with about 4.23 inches of precipitation.

What plant hardiness zone is Shell Lake in?

Shell Lake is approximately in USDA plant hardiness Zone 5b, based on the average annual extreme minimum temperature.

Has the climate in Shell Lake changed recently?

8.2% of Shell Lake'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.

Shell Lake, WI

Climate overview — based on NOAA 1991-2020 normals from SPOONER AG RES STN, WI US.

Dfb Warm-summer humid continental climate 5b USDA hardiness Zone 5b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Shell Lake has an annual average temperature of 42.2°F with about 31.6 inches of precipitation per year and 55.7 inches of snow. The warmest month is July (average high 80.1°F), and the coldest is January (average low 0.9°F). June is typically the wettest month (4.23 in) and January the driest (0.79 in). Snow typically falls from October through May.

Pleasant months

2 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

58.2°F

warmest to coldest month

Heating need

8,391

HDD/yr

Cooling need

183

CDD/yr

Best time to visit Shell Lake

Full guide →

Climate change signal

All-time records →

30 of 366 (8.2%) of Shell Lake'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		43
1900s		23
1910s		12
1920s		14
1930s		68
1940s		36
1950s		22
1960s		8
1970s		13
1980s		21
1990s		26
2000s		36
2010s		23
2020s		21

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	20.7°F	0.9°F	10.8°F	0.79 in	11.3 in	8
February	26.4°F	4.4°F	15.4°F	0.80 in	9.6 in	6
March	39.5°F	17.7°F	28.6°F	1.43 in	9.4 in	7
April	53.7°F	31.0°F	42.4°F	2.77 in	4.8 in	10
May	66.7°F	43.6°F	55.2°F	4.08 in	0.4 in	12
June	76.1°F	53.7°F	64.9°F	4.23 in	—	12
July	80.1°F	58.0°F	69.0°F	3.99 in	—	11
August	78.3°F	56.0°F	67.1°F	3.90 in	—	10
September	69.6°F	48.0°F	58.8°F	3.61 in	—	10
October	55.6°F	35.9°F	45.8°F	3.16 in	0.8 in	10
November	39.0°F	22.8°F	30.9°F	1.66 in	6.2 in	7
December	25.7°F	9.2°F	17.5°F	1.19 in	13.2 in	9