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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, like December, is a freezing cold winter month in Sumner, Michigan, with an average temperature varying between 26.8°F (-2.9°C) and 16.2°F (-8.8°C). Sumner's coldest month, January, registers temperatures that range from a high of 26.8°F (-2.9°C) to a low of 16.2°F (-8.8°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Sumner, Michigan, with an average temperature varying between 17.4°F (-8.1°C) and 29.5°F (-1.4°C). Sumner records a slight change with February's average high-temperatures adjusting to a still subzero cold 29.5°F (-1.4°C) from January's 26.8°F (-2.9°C). Weather in February »
Weather in March
The first month of the spring, March, is a cold month in Sumner, Michigan, with an average temperature ranging between min 26.4°F (-3.1°C) and max 40.8°F (4.9°C). The onset of March marks an increase in the average high-temperature, moving from a freezing cold 29.5°F (-1.4°C) in February to a cold 40.8°F (4.9°C). Weather in March »
Weather in April
April is a fresh spring month in Sumner, Michigan, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 52.9°F (11.6°C). Sumner sees an increase in average high-temperatures during April, moving from an icy 40.8°F (4.9°C) in March to a fresh 52.9°F (11.6°C). Weather in April »
Weather in May
May, the last month of the spring in Sumner, is a comfortable month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 47.7°F (8.7°C). As Sumner transitions into May, a rise in the average high-temperature is observed, moving from a fresh 52.9°F (11.6°C) in April to a refreshing 65.8°F (18.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Sumner, Michigan, with an average temperature varying between 73.9°F (23.3°C) and 55.4°F (13°C). The onset of June brings a minor temperature shift, with the average high-temperature moving from a refreshing 65.8°F (18.8°C) in May to a moderately hot 73.9°F (23.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Sumner, Michigan, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 79.3°F (26.3°C). July registers as the month with the highest average temperatures, reaching 79.3°F (26.3°C) at its peak and 60.4°F (15.8°C) at the lowest. Weather in July »
Weather in August
August, the last month of the summer in Sumner, is another warm month, with an average temperature fluctuating between 77.5°F (25.3°C) and 59.2°F (15.1°C). Sumner, Michigan, experiences a recorded average high-temperature of a still warm 77.5°F (25.3°C) in August, closely aligned with July's 79.3°F (26.3°C). Weather in August »
Weather in September
September, the first month of the autumn in Sumner, is still a pleasant month, with an average temperature varying between 71.1°F (21.7°C) and 52.3°F (11.3°C). The transition into September involves a small decrease in the average high-temperature, dipping slightly from a warm 77.5°F (25.3°C) in August to a pleasant 71.1°F (21.7°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Sumner, Michigan, with an average temperature ranging between min 43.2°F (6.2°C) and max 58.1°F (14.5°C). The shift to October brings a decrease in the average high-temperature, falling from a pleasant 71.1°F (21.7°C) in September to a refreshing 58.1°F (14.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Sumner, is also a frosty month, with an average temperature varying between 32.4°F (0.2°C) and 43.9°F (6.6°C). The arrival of November signals a shift in temperature, down from a moderate 58.1°F (14.5°C) in October to a frosty 43.9°F (6.6°C). Weather in November »
Weather in December
December, the first month of the winter in Sumner, is also a wintry month, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 32.9°F (0.5°C). In December, the average high-temperature decreases from a frosty 43.9°F (6.6°C) in November to an icy 32.9°F (0.5°C). Weather in December »
Updated: Jun 26, 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 time of the year is the coldest?
January is the month that records the lowest temperatures, with averages ranging from a high of 26.8°F (-2.9°C) to a low of 16.2°F (-8.8°C).
What is the most humid month?
January is the most humid month in Sumner, with an average relative humidity of 88%.
How much does it rain in Sumner?
Throughout the year, there are 141.3 rainfall days, and 22.48" (571mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, October through December.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 18 days and typically aggregates up to 5.91" (150mm) of snow.
How many days does it snow?
Throughout the year, in Sumner, there are 65.5 snowfall days, and 19.65" (499mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 2.7h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index in Sumner?
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.
What is the driest month in Sumner?
The month with the least rainfall is February, when the rain falls for 5.3 days and typically collects 1.26" (32mm) of precipitation.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month?
The least humid month is April, with an average relative humidity of 75%.
What is the wettest month?
The month with the most rainfall is May, when the rain falls for 15.9 days and typically aggregates up to 3.03" (77mm) of precipitation.
When it does not snow?
In Sumner, snow does not fall in May through September.
What are the months with the highest UV index in Sumner?
May through August, with an average maximum UV index of 5, are months with the highest UV index.
When are the longest days?
The month with the longest days is June, with an average of 15h and 18min of daylight.
What part of the year is the hottest?
July, marked by an average high-temperature of 79.3°F (26.3°C) and a low-temperature of 60.4°F (15.8°C), is the warmest month.
What month has the most sunshine?
With an average of 10.4h of sunshine, July has the most sunshine of the year.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 0min of daylight.
Average temperature
Sumner, MI
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.8°F).
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Sumner, MI
- Average pressure in January:
30.06"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Sumner, MI
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity
Sumner, MI
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Sumner, MI
- Average rainfall in January:
1.65" - Average rainfall in February:
1.26" - Average rainfall in March:
1.38" - Average rainfall in April:
2.44" - Average rainfall in May:
3.03" - Average rainfall in June:
2.28"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.93" - Average rainfall in September:
1.46" - Average rainfall in October:
2.56" - Average rainfall in November:
1.3" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days
Sumner, MI
- Average rainfall days in January:
6.9 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
15.9 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
14.9 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (5.3 days).
Average snowfall
Sumner, MI
The month with the highest snowfall is January (5.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Sumner, MI
- Average snowfall days in January:
18 days - Average snowfall days in February:
14.3 days - Average snowfall days in March:
8 days - Average snowfall days in April:
3.3 days - Average snowfall days in May:
0.2 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:
0.3 days - Average snowfall days in November:
6.9 days - Average snowfall days in December:
14.5 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sumner, MI
- 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:
2h and 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 3min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 2min - Average sunshine in December:
3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days
Sumner, MI
- Average sunshine days in January:
10.3 days - Average sunshine days in February:
10.6 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
13.7 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
13.2 days - Average sunshine days in November:
14.2 days - Average sunshine days in December:
11.5 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is January (10.3 days).
Average UV index
Sumner, MI
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
Sumner, MI
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Sumner, MI
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, September and December (5mi).
Sumner, Michigan, USA
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