Climate and monthly weather forecastLewis, WI
Climate and monthly weather forecast
Weather in January
January, the same as December, in Lewis, Wisconsin, is a freezing cold winter month, with temperature in the range of an average low of 4.8°F (-15.1°C) and an average high of 17.8°F (-7.9°C). With its high average temperature of 17.8°F (-7.9°C) and a low of 4.8°F (-15.1°C), January is regarded as the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Lewis, Wisconsin, with an average temperature fluctuating between 7.5°F (-13.6°C) and 21.9°F (-5.6°C). The start of February sees the average high-temperature at a still subzero cold 21.9°F (-5.6°C), showing little difference from January's 17.8°F (-7.9°C). Weather in February »Weather in March
March, the first month of the spring in Lewis, is an icy month, with temperature in the range of an average low of 22.5°F (-5.3°C) and an average high of 36.9°F (2.7°C). March's arrival signals a significant increase in average high-temperatures, soaring from February's subzero cold 21.9°F (-5.6°C) to a cold 36.9°F (2.7°C). Weather in March »Weather in April
April in Lewis, Wisconsin, is a chilly spring month, with an average temperature varying between 49.6°F (9.8°C) and 34°F (1.1°C). The onset of April marks an increase in the average high-temperature, moving from a wintry 36.9°F (2.7°C) in March to a frosty 49.6°F (9.8°C). Weather in April »Weather in May
May, the last month of the spring in Lewis, is a comfortable month, with an average temperature fluctuating between 46°F (7.8°C) and 63.9°F (17.7°C). May's arrival signals a temperature shift, moving from a frosty 49.6°F (9.8°C) in April to a comfortable 63.9°F (17.7°C). Weather in May »Weather in June
June, the first month of the summer in Lewis, is an agreeable month, with an average temperature ranging between max 73°F (22.8°C) and min 55°F (12.8°C). Lewis's transition into June is marked by a rise in the average high-temperature, advancing from a refreshing 63.9°F (17.7°C) in May to an agreeable 73°F (22.8°C). Weather in June »Weather in July
July in Lewis, Wisconsin, is a warm summer month, with an average temperature varying between 78.1°F (25.6°C) and 59.5°F (15.3°C). July registers as the month with the highest average temperatures, reaching 78.1°F (25.6°C) at its peak and 59.5°F (15.3°C) at the lowest. Weather in July »Weather in August
The last month of the summer, August, is another warm month in Lewis, Wisconsin, with temperature in the range of an average low of 57.6°F (14.2°C) and an average high of 76.1°F (24.5°C). The transition into August is marked with an average high-temperature of a still moderately hot 76.1°F (24.5°C), showing an insignificant shift from July's 78.1°F (25.6°C). Weather in August »Weather in September
September, the first month of the autumn in Lewis, is also an agreeable month, with an average temperature varying between 50.2°F (10.1°C) and 68.9°F (20.5°C). The move into September indicates a slight reduction in the average high-temperature, down from August's moderately hot 76.1°F (24.5°C) to a pleasant 68.9°F (20.5°C). Weather in September »Weather in October
October, like September, in Lewis, Wisconsin, is a cool autumn month, with an average temperature varying between 38.3°F (3.5°C) and 53.1°F (11.7°C). The arrival of October is marked by a notable decrease in high-temperatures, falling from an agreeable 68.9°F (20.5°C) in September to a fresh 53.1°F (11.7°C). Weather in October »Weather in November
November, the last month of the autumn in Lewis, is another cold month, with temperature in the range of an average low of 25.7°F (-3.5°C) and an average high of 37.9°F (3.3°C). November's arrival signals a distinct temperature shift, dropping from a fresh 53.1°F (11.7°C) in October to an icy 37.9°F (3.3°C). Weather in November »Weather in December
December, the first month of the winter in Lewis, is also a subzero cold month, with temperature in the range of an average high of 23.4°F (-4.8°C) and an average low of 12.7°F (-10.7°C). The shift into December brings a noticeable decrease in the average high-temperature, falling from a cold 37.9°F (3.3°C) in November to a freezing cold 23.4°F (-4.8°C). Weather in December »Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The coldest month is January, with an average high-temperature of 17.8°F (-7.9°C) and an average low-temperature of 4.8°F (-15.1°C).
January is the most humid month, with an average relative humidity of 92%.
The month with the least rainfall is January, when the rain falls for 2.3 days and typically collects 0.59" (15mm) of precipitation.
In Lewis, during the entire year, the rain falls for 122.5 days and collects up to 20.87" (530mm) of precipitation.
Months with snowfall in Lewis, Wisconsin, are January through May, October through December.
In Lewis, during the entire year, snow falls for 79 days and aggregates up to 24.72" (628mm) of snow.
January has the least sunshine of the year, with an average of 2.6h of sunshine.
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Lewis.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
April and May, with an average relative humidity of 76%, are the least humid months.
The month with the most rainfall is June, when the rain falls for 16.8 days and typically aggregates up to 3.35" (85mm) of precipitation.
In Lewis, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 42min of daylight.
With an average high-temperature of 78.1°F (25.6°C) and an average low-temperature of 59.5°F (15.3°C), July is the warmest month.
July has the most sunshine of the year in Lewis, with an average of 9.6h of sunshine.
The month with the highest UV index is July, with an average maximum UV index of 6.
December is the month with the most snowfall. Snow falls for 15.2 days and accumulates 5.47" (139mm) of snow.
The month with the shortest days is December, with an average of 8h and 48min of daylight.
Average temperature
Lewis, WI
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (17.8°F).
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).
Average pressure
Lewis, WI
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
30"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Lewis, WI
- Average wind speed in January:
8.9mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
7mph - Average wind speed in September:
8.1mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.1mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity
Lewis, WI
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall
Lewis, WI
- Average rainfall in January:
0.59" - Average rainfall in February:
0.83" - Average rainfall in March:
1.14" - Average rainfall in April:
2.01" - Average rainfall in May:
2.6" - Average rainfall in June:
3.35"
- Average rainfall in July:
2.52" - Average rainfall in August:
2.28" - Average rainfall in September:
1.61" - Average rainfall in October:
1.77" - Average rainfall in November:
1.06" - Average rainfall in December:
1.1"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Lewis, WI
- Average rainfall days in January:
2.3 days - Average rainfall days in February:
2.8 days - Average rainfall days in March:
8.2 days - Average rainfall days in April:
12.1 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
14 days - Average rainfall days in September:
13.9 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
5.9 days - Average rainfall days in December:
3.9 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is January (2.3 days).
Average snowfall
Lewis, WI
- Average snowfall in January:
3.54" - Average snowfall in February:
4.8" - Average snowfall in March:
3.11" - Average snowfall in April:
2.95" - Average snowfall in May:
0.59" - Average snowfall in June:
0"
The month with the highest snowfall is December (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Lewis, WI
- Average snowfall days in January:
17.3 days - Average snowfall days in February:
15.5 days - Average snowfall days in March:
11.2 days - Average snowfall days in April:
6.3 days - Average snowfall days in May:
1 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:
0.1 days - Average snowfall days in October:
2.6 days - Average snowfall days in November:
9.8 days - Average snowfall days in December:
15.2 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Lewis, WI
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 42min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
2h and 36min - Average sunshine in February:
2h and 42min - Average sunshine in March:
4h and 42min - Average sunshine in April:
6h and 36min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
4h and 48min - Average sunshine in November:
4h and 18min - Average sunshine in December:
2h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days
Lewis, WI
- Average sunshine days in January:
13.6 days - Average sunshine days in February:
12.5 days - Average sunshine days in March:
13.5 days - Average sunshine days in April:
12.1 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
14.3 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
15 days - Average sunshine days in December:
13.8 days
The month with the most sunshine days is October (16.3 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Lewis, WI
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Lewis, WI
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility
Lewis, WI
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
