Climate and monthly weather forecastCuster, WI
Climate and monthly weather forecast
Weather in January
January, the same as December, in Custer, Wisconsin, is another subzero cold winter month, with an average temperature varying between 9°F (-12.8°C) and 20.5°F (-6.4°C). Custer experiences its lowest average temperatures in January, reaching a peak of 20.5°F (-6.4°C) and a minimum of 9°F (-12.8°C). Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Custer, Wisconsin, with an average temperature varying between 23.5°F (-4.7°C) and 10.9°F (-11.7°C). Custer notes an average high-temperature of a still freezing cold 23.5°F (-4.7°C) in February, displaying minor variation from January. Weather in February »Weather in March
March, the first month of the spring in Custer, is a wintry month, with an average temperature varying between 37.8°F (3.2°C) and 24.3°F (-4.3°C). March brings a temperature change, with average high-temperatures moving from February's subzero cold 23.5°F (-4.7°C) to an icy 37.8°F (3.2°C). Weather in March »Weather in April
April in Custer, Wisconsin, is a fresh spring month, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 50.2°F (10.1°C). Custer sees an increase in average high-temperatures during April, moving from a wintry 37.8°F (3.2°C) in March to a fresh 50.2°F (10.1°C). Weather in April »Weather in May
May, the last month of the spring in Custer, is a comfortable month, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 46.6°F (8.1°C). The shift from April to May brings an increase in the average high-temperature, moving from a cool 50.2°F (10.1°C) to a comfortable 64°F (17.8°C). Weather in May »Weather in June
June, the first month of the summer in Custer, is an agreeable month, with an average temperature varying between 72.1°F (22.3°C) and 55°F (12.8°C). In June, the average high-temperature marginally rises from an enjoyable 64°F (17.8°C) in May to an agreeable 72.1°F (22.3°C). Weather in June »Weather in July
July is a warm summer month in Custer, Wisconsin, with an average temperature fluctuating between 77.4°F (25.2°C) and 59.9°F (15.5°C). Custer witnesses the warmest weather in July, with temperatures averaging a high of 77.4°F (25.2°C) and a low of 59.9°F (15.5°C). Weather in July »Weather in August
August, the last month of the summer in Custer, is also a moderately hot month, with an average temperature ranging between max 76.1°F (24.5°C) and min 58.1°F (14.5°C). Custer observes an average high-temperature of a still warm 76.1°F (24.5°C) in August, barely different from 77.4°F (25.2°C) in July. Weather in August »Weather in September
September, the first month of the autumn in Custer, is still a pleasant month, with an average temperature varying between 68.9°F (20.5°C) and 50.9°F (10.5°C). With the onset of September, Custer's climate undergoes a slight change as the average high-temperature moves from a moderately hot 76.1°F (24.5°C) in August to an agreeable 68.9°F (20.5°C). Weather in September »Weather in October
October, like September, in Custer, Wisconsin, is another fresh autumn month, with an average temperature fluctuating between 40.1°F (4.5°C) and 54°F (12.2°C). October signals a significant shift in the average high-temperature, falling from September's pleasant 68.9°F (20.5°C) to a cool 54°F (12.2°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Custer, Wisconsin, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 28.6°F (-1.9°C). November's onset brings a noticeable temperature drop, falling from a cool 54°F (12.2°C) in October to an icy 39.2°F (4°C). Weather in November »Weather in December
December, the first month of the winter in Custer, is still a freezing cold month, with an average temperature fluctuating between 16.5°F (-8.6°C) and 25.9°F (-3.4°C). December weather is marked by a drop in the average high-temperature, falling from an icy 39.2°F (4°C) in November to a freezing cold 25.9°F (-3.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Custer, WI
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (20.5°F).
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure
Custer, WI
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.09"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Custer, WI
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
10.3mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7.2mph - Average wind speed in September:
8mph - Average wind speed in October:
9.4mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).
Average humidity
Custer, WI
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Custer, WI
- Average rainfall in January:
1.02" - Average rainfall in February:
0.91" - Average rainfall in March:
1.61" - Average rainfall in April:
2.48" - Average rainfall in May:
3.07" - Average rainfall in June:
3.23"
- Average rainfall in July:
2.09" - Average rainfall in August:
1.85" - Average rainfall in September:
1.77" - Average rainfall in October:
2.4" - Average rainfall in November:
1.65" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days
Custer, WI
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
3.8 days - Average rainfall days in March:
8.6 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
16.1 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
13.4 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
4.6 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (2.8 days).
Average snowfall
Custer, WI
- Average snowfall in January:
4.69" - Average snowfall in February:
4.09" - Average snowfall in March:
2.95" - Average snowfall in April:
2.56" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is December (5.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Custer, WI
- Average snowfall days in January:
14.1 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
8.7 days - Average snowfall days in April:
3.8 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1.9 days - Average snowfall days in November:
7 days - Average snowfall days in December:
12.9 days
The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Custer, WI
- Average daylight in January:
9h and 18min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 6min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
2h and 48min - Average sunshine in February:
3h and 6min - Average sunshine in March:
5h and 6min - Average sunshine in April:
6h and 54min - Average sunshine in May:
8h and 18min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
9h and 30min - Average sunshine in August:
9h and 24min - Average sunshine in September:
8h and 18min - Average sunshine in October:
4h and 54min - Average sunshine in November:
4h and 24min - Average sunshine in December:
3h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days
Custer, WI
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
12.7 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
17 days - Average sunshine days in December:
15.2 days
The month with the most sunshine days is November (17 days).
The months with the least sunshine days are April, May and June (12.7 days).
Average UV index
Custer, WI
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Custer, WI
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility
Custer, WI
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).





