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 Ontario, Wisconsin, is a freezing cold winter month, with temperature in the range of an average high of 22.1°F (-5.5°C) and an average low of 9.3°F (-12.6°C). The coldest month is January, with an average high-temperature of 22.1°F (-5.5°C) and an average low-temperature of 9.3°F (-12.6°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Ontario, Wisconsin, with an average temperature fluctuating between 26.1°F (-3.3°C) and 13.1°F (-10.5°C). In February, the average high-temperature is practically the same as in January - a still freezing cold 26.1°F (-3.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Ontario, Wisconsin, with an average temperature varying between 25.9°F (-3.4°C) and 40.5°F (4.7°C). In March, the average high-temperature soars, from a subzero cold 26.1°F (-3.3°C) in February, to a cold 40.5°F (4.7°C). Weather in March »
Weather in April
April in Ontario, Wisconsin, is a cool spring month, with an average temperature fluctuating between 53.1°F (11.7°C) and 36°F (2.2°C). In April, the average high-temperature increases from a cold 40.5°F (4.7°C) in March to a cool 53.1°F (11.7°C). Weather in April »
Weather in May
May, the last month of the spring in Ontario, is an enjoyable month, with an average temperature fluctuating between 47.5°F (8.6°C) and 65.8°F (18.8°C). In Ontario, the average high-temperature in May increases from a fresh 53.1°F (11.7°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 Ontario, is a moderately hot month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 75.6°F (24.2°C). In June, the average high-temperature increases from a comfortable 65.8°F (18.8°C) in May to a warm 75.6°F (24.2°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Ontario, Wisconsin, with temperature in the range of an average low of 60.8°F (16°C) and an average high of 79.9°F (26.6°C). The warmest month is July, with an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 60.8°F (16°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Ontario, Wisconsin, with temperature in the range of an average low of 58.5°F (14.7°C) and an average high of 78.4°F (25.8°C). In August, the average high-temperature is essentially the same as in July - a still moderately hot 78.4°F (25.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Ontario, Wisconsin, with an average temperature ranging between min 51.1°F (10.6°C) and max 71.1°F (21.7°C). In September, the average high-temperature slightly decreases from a warm 78.4°F (25.8°C) in August to a pleasant 71.1°F (21.7°C). Weather in September »
Weather in October
October, the same as September, in Ontario, Wisconsin, is a moderate autumn month, with an average temperature fluctuating between 40.1°F (4.5°C) and 55.9°F (13.3°C). In Ontario, the average high-temperature in October declines considerably from an agreeable 71.1°F (21.7°C) in September to a mild 55.9°F (13.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Ontario, is also a wintry month, with an average temperature ranging between max 41.5°F (5.3°C) and min 28.6°F (-1.9°C). In Ontario, the average high-temperature in November plummets from a mild 55.9°F (13.3°C) in October to a wintry 41.5°F (5.3°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Ontario, Wisconsin, with temperature in the range of an average high of 28°F (-2.2°C) and an average low of 17.6°F (-8°C). In December, the average high-temperature decreases from a cold 41.5°F (5.3°C) in November to a freezing cold 28°F (-2.2°C). Weather in December »
[Resources]FAQ
What is the coldest month in Ontario?
With an average high-temperature of 22.1°F (-5.5°C) and an average low-temperature of 9.3°F (-12.6°C), January is the coldest month in Ontario, Wisconsin.
What is the most humid month in Ontario?
January is the most humid month in Ontario, with an average relative humidity of 90%.
What is the driest month in Ontario?
The month with the least rainfall is January, when the rain falls for 3.5 days and typically collects 1.1" (28mm) of precipitation.
How much does it rain in Ontario?
Throughout the year, in Ontario, Wisconsin, there are 131.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.
When does it snow in Ontario?
Months with snowfall are January through May, October through December.
How many days does it snow in Ontario?
In Ontario, Wisconsin, during the entire year, snow falls for 50.2 days and aggregates up to 21.69" (551mm) of snow.
What is the month with the least sunshine in Ontario?
The month with the least sunshine is January, with an average of 3h of sunshine.
When is the lowest UV index in Ontario?
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Ontario.
When does it snow the most in Ontario?
The month with the most snowfall in Ontario, Wisconsin, is February, when snow falls for 10.5 days and typically aggregates up to 5.87" (149mm) of snow.
When is Daylight Saving Time (DST) in Ontario?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from CDT to CST.
What is the least humid month in Ontario?
With an average relative humidity of 77%, April is the least humid month in Ontario, Wisconsin.
What is the rainiest month in Ontario?
The month with the most rainfall in Ontario, Wisconsin, is June, when the rain falls for 16.9 days and typically aggregates up to 4.17" (106mm) of precipitation.
When it does not snow in Ontario?
In Ontario, Wisconsin, snow does not fall in June through September.
When are the longest days in Ontario?
June has the longest days of the year, with an average of 15h and 24min of daylight.
What is the warmest month in Ontario?
With an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 60.8°F (16°C), July is the warmest month in Ontario.
What month has the most sunshine in Ontario?
The month with the most sunshine in Ontario is July, with an average of 9.9h of sunshine.
What is the month with the highest UV index in Ontario?
The month with the highest UV index is July, with an average maximum UV index of 6.
What is the month with the shortest days in Ontario?
December has the shortest days of the year, with an average of 8h and 59min of daylight.
Average temperature
Ontario, WI
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (22.1°F).
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure
Ontario, WI
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.9"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:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Ontario, WI
- Average wind speed in January:
9.1mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.8mph - Average wind speed in April:
9.3mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9mph - Average wind speed in December:
8.9mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Ontario, WI
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall
Ontario, WI
- Average rainfall in January:
1.1" - Average rainfall in February:
1.22" - Average rainfall in March:
1.81" - Average rainfall in April:
2.83" - Average rainfall in May:
3.39" - Average rainfall in June:
4.17"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days
Ontario, WI
- Average rainfall days in January:
3.5 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
13 days - Average rainfall days in September:
12 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
5.6 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (3.5 days).
Average snowfall
Ontario, WI
- Average snowfall in January:
4.88" - Average snowfall in February:
5.87" - Average snowfall in March:
2.68" - Average snowfall in April:
1.81" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Ontario, WI
- Average snowfall days in January:
12.3 days - Average snowfall days in February:
10.5 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
2.8 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:
1.6 days - Average snowfall days in November:
5.3 days - Average snowfall days in December:
10.6 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Ontario, WI
- Average daylight in January:
9h and 22min - Average daylight in February:
10h and 31min - Average daylight in March:
11h and 58min - Average daylight in April:
13h and 28min - Average daylight in May:
14h and 45min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 4min - Average daylight in August:
13h and 56min - Average daylight in September:
12h and 29min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 41min - Average daylight in December:
8h and 59min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 59min).
- Average sunshine in January:
3h and 0min - Average sunshine in February:
3h and 18min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 6min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 0min - Average sunshine in November:
4h and 36min - Average sunshine in December:
3h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days
Ontario, WI
- Average sunshine days in January:
17 days - Average sunshine days in February:
14.9 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
12.5 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
15.7 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
17 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.4 days).
Average UV index
Ontario, 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
Ontario, WI
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Ontario, WI
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location
