Expand
Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Waterloo, Wisconsin, is a freezing cold winter month, with an average temperature fluctuating between 11.1°F (-11.6°C) and 23.7°F (-4.6°C). Waterloo's January weather, with an average high temperature of 23.7°F (-4.6°C) and an average low temperature of 11.1°F (-11.6°C), tends to be the coldest of the year. Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Waterloo, Wisconsin, with an average temperature varying between 27.3°F (-2.6°C) and 14.5°F (-9.7°C). With the onset of February, the average high-temperature stands at a still freezing cold 27.3°F (-2.6°C), closely aligned with January's 23.7°F (-4.6°C). Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Waterloo, Wisconsin, with an average temperature varying between 27°F (-2.8°C) and 41.4°F (5.2°C). March's onset is marked by a temperature increase, moving from a subzero cold 27.3°F (-2.6°C) in February to an icy 41.4°F (5.2°C). Weather in March »
Weather in April
April is a fresh spring month in Waterloo, Wisconsin, with an average temperature varying between 53.6°F (12°C) and 36.9°F (2.7°C). April signals a shift in the average high-temperature, moving from March's cold 41.4°F (5.2°C) to a cool 53.6°F (12°C). Weather in April »
Weather in May
The last month of the spring, May, is an enjoyable month in Waterloo, Wisconsin, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 48.6°F (9.2°C). Waterloo's transition into May brings a rise in the average high-temperature, moving from a cool 53.6°F (12°C) in April to a comfortable 65.8°F (18.8°C). Weather in May »
Weather in June
June, the first month of the summer in Waterloo, is a warm month, with an average temperature fluctuating between 57.6°F (14.2°C) and 74.7°F (23.7°C). Waterloo observes a slight uplift in the average high-temperature with the onset of June, adjusting from May's comfortable 65.8°F (18.8°C) to a warm 74.7°F (23.7°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Waterloo, Wisconsin, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 78.8°F (26°C). July tends to be the warmest month, with temperatures averaging a daily high of 78.8°F (26°C) and a low of 61.3°F (16.3°C). Weather in July »
Weather in August
August, the last month of the summer in Waterloo, is another warm month, with temperature in the range of an average high of 77.4°F (25.2°C) and an average low of 59.5°F (15.3°C). The start of August marks an average high-temperature of a still moderately hot 77.4°F (25.2°C), hardly distinguishable from the conditions in July. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Waterloo, Wisconsin, with an average temperature varying between 71.1°F (21.7°C) and 51.8°F (11°C). The onset of September brings a small shift in high-temperatures, falling from a warm 77.4°F (25.2°C) in August to an agreeable 71.1°F (21.7°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Waterloo, Wisconsin, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 57.6°F (14.2°C). As October begins, there is a decrease in the average high-temperature, falling from an agreeable 71.1°F (21.7°C) in September to a mild 57.6°F (14.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Waterloo, is also a wintry month, with an average temperature varying between 30°F (-1.1°C) and 42.4°F (5.8°C). A decrease in the average high-temperature marks November, falling from October's mild 57.6°F (14.2°C) to a wintry 42.4°F (5.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Waterloo, Wisconsin, with an average temperature ranging between max 30.2°F (-1°C) and min 19.9°F (-6.7°C). Waterloo's transition into December involves a shift in temperature, receding from an icy 42.4°F (5.8°C) in November to a freezing cold 30.2°F (-1°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
What is the coldest month in Waterloo?
January is the coldest month in Waterloo, Wisconsin, with the temperature often reaching an average high of 23.7°F (-4.6°C) and an average low of 11.1°F (-11.6°C).
What is the most humid month in Waterloo?
With an average relative humidity of 89%, January is the most humid month in Waterloo.
How many days does it rain in Waterloo?
Throughout the year, in Waterloo, Wisconsin, there are 132.3 rainfall days, and 21.38" (543mm) of precipitation is accumulated.
When does it snow in Waterloo?
January through April, October through December are months with snowfall in Waterloo, Wisconsin.
What is the snowiest month in Waterloo?
January is the month with the most snowfall in Waterloo, Wisconsin. Snow falls for 13.3 days and accumulates 3.31" (84mm) of snow.
How much does it snow in Waterloo?
In Waterloo, during the entire year, snow falls for 52.3 days and aggregates up to 13.31" (338mm) of snow.
What is the month with the least sunshine in Waterloo?
The month with the least sunshine is January, with an average of 3.3h of sunshine.
When is the lowest UV index in Waterloo?
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Waterloo, Wisconsin.
When is Daylight Saving Time (DST) in Waterloo?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Waterloo, 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.
What is the least humid month in Waterloo?
With an average relative humidity of 76%, April is the least humid month in Waterloo.
When it does not snow in Waterloo?
May through September are months without snowfall.
What are the months with the highest UV index in Waterloo?
The months with the highest UV index in Waterloo, Wisconsin, are May through August, with an average maximum UV index of 5.
What is the rainiest month in Waterloo?
June is the month with the most rainfall in Waterloo. Rain falls for 16 days and accumulates 2.87" (73mm) of precipitation.
When are the longest days in Waterloo?
The month with the longest days in Waterloo is June, with an average of 15h and 18min of daylight.
What part of the year is the hottest in Waterloo?
During the warmest month in Waterloo, July, temperatures average a high of 78.8°F (26°C) and a low of 61.3°F (16.3°C).
What month has the most sunshine in Waterloo?
The month with the most sunshine in Waterloo is July, with an average of 9.8h of sunshine.
What is the driest month in Waterloo?
December is the month with the least rainfall in Waterloo, Wisconsin. Rain falls for 5.9 days and accumulates 0.87" (22mm) of precipitation.
What is the month with the shortest days in Waterloo?
With an average of 9h and 0min of daylight, December has the shortest days of the year in Waterloo, Wisconsin.
Average temperature
Waterloo, WI
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (23.7°F).
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).
Average pressure
Waterloo, WI
- Average pressure in January:
30.11"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:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Waterloo, WI
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.5mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.5mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Waterloo, WI
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Waterloo, WI
- Average rainfall in January:
0.94" - Average rainfall in February:
0.91" - Average rainfall in March:
1.26" - Average rainfall in April:
2.28" - Average rainfall in May:
2.52" - Average rainfall in June:
2.87"
- Average rainfall in July:
2.36" - Average rainfall in August:
2.13" - Average rainfall in September:
2.01" - Average rainfall in October:
2.17" - Average rainfall in November:
1.06" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days
Waterloo, WI
- Average rainfall days in January:
4.2 days - Average rainfall days in February:
3.9 days - Average rainfall days in March:
9.7 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
16 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
16.1 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
11.7 days - Average rainfall days in November:
7.9 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (3.9 days).
Average snowfall
Waterloo, WI
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Waterloo, WI
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
12 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
2.5 days - Average snowfall days in May:
0.1 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 days - Average snowfall days in October:
0.9 days - Average snowfall days in November:
5.5 days - Average snowfall days in December:
11.2 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Waterloo, WI
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
3h and 2min - Average sunshine in February:
3h and 3min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 3min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days
Waterloo, WI
- Average sunshine days in January:
15 days - Average sunshine days in February:
13.4 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
14.8 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (11.3 days).
Average UV index
Waterloo, WI
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Waterloo, WI
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Waterloo, WI
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Waterloo, Wisconsin, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location