Climate and monthly weather forecastNapoleon, MI
Climate and monthly weather forecast
Weather in January
January, the same as December, in Napoleon, Michigan, is a freezing cold winter month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 17.1°F (-8.3°C). January brings the lowest temperatures, with an average high of 27.9°F (-2.3°C) and an average low of 17.1°F (-8.3°C). Weather in January »Weather in February
February, the last month of the winter in Napoleon, is also a subzero cold month, with an average temperature fluctuating between 31.3°F (-0.4°C) and 18.5°F (-7.5°C). The average high-temperature in February, at a still freezing cold 31.3°F (-0.4°C), reveals a modest deviation from January's 27.9°F (-2.3°C). Weather in February »Weather in March
March, the first month of the spring in Napoleon, is a chilly month, with temperature in the range of an average low of 28°F (-2.2°C) and an average high of 42.8°F (6°C). An escalation in the average high-temperature is seen with the onset of March, moving from a freezing cold 31.3°F (-0.4°C) in February to a chilly 42.8°F (6°C). Weather in March »Weather in April
April in Napoleon, Michigan, is a cool spring month, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 37.9°F (3.3°C). As March transitions into April, a change in temperatures is observed, with average highs moving from a frosty 42.8°F (6°C) to a fresh 54.1°F (12.3°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Napoleon, Michigan, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 66.7°F (19.3°C). Napoleon sees an increase in average high-temperatures during May, moving from a fresh 54.1°F (12.3°C) in April to a refreshing 66.7°F (19.3°C). Weather in May »Weather in June
June, the first month of the summer in Napoleon, is a moderately hot month, with an average temperature ranging between max 74.8°F (23.8°C) and min 57.6°F (14.2°C). June sees a marginal temperature increase, moving from a comfortable 66.7°F (19.3°C) in May to a warm 74.8°F (23.8°C). Weather in June »Weather in July
July, like June, in Napoleon, Michigan, is another warm summer month, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 79.2°F (26.2°C). In Napoleon, July records the highest average temperatures, peaking at 79.2°F (26.2°C) and reaching a low of 61.3°F (16.3°C). Weather in July »Weather in August
August, the last month of the summer in Napoleon, is another warm month, with an average temperature varying between 59.7°F (15.4°C) and 77.5°F (25.3°C). August is marked by an average high-temperature of a still warm 77.5°F (25.3°C), almost identical to the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Napoleon, Michigan, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 53.8°F (12.1°C). Napoleon's transition into September involves a gentle shift in temperature, receding from a moderately hot 77.5°F (25.3°C) in August to an agreeable 71.6°F (22°C). Weather in September »Weather in October
October, the same as September, in Napoleon, Michigan, is another mild autumn month, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 58.5°F (14.7°C). With the beginning of October, the average high-temperature shows a decrease, transitioning from a pleasant 71.6°F (22°C) in September to a refreshing 58.5°F (14.7°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Napoleon, Michigan, with temperature in the range of an average high of 45.3°F (7.4°C) and an average low of 32.7°F (0.4°C). As October transitions to November, the average high-temperature falls from a refreshing 58.5°F (14.7°C) to a chilly 45.3°F (7.4°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Napoleon, Michigan, with an average temperature varying between 25.2°F (-3.8°C) and 34.2°F (1.2°C). In December, the average high-temperature goes from a chilly 45.3°F (7.4°C) in November to a cold 34.2°F (1.2°C). Weather in December »Updated: Jun 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
Napoleon experiences its average lowest temperatures in January, reaching a peak of 27.9°F (-2.3°C) and a minimum of 17.1°F (-8.3°C).
January and February, with an average relative humidity of 87%, are most humid months.
Throughout the year, there are 144.6 rainfall days, and 20.2" (513mm) of precipitation is accumulated.
Months with snowfall are January through May, October through December.
Throughout the year, there are 51.4 snowfall days, and 13.11" (333mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 2.9h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 11.6 days and typically aggregates up to 3.66" (93mm) of snow.
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.
The least humid month in Napoleon is April, with an average relative humidity of 77%.
May is the month with the most rainfall. Rain falls for 18.1 days and accumulates 2.83" (72mm) of precipitation.
The months with the highest UV index are May through August, with an average maximum UV index of 5.
In Napoleon, snow does not fall in June through September.
With an average of 15h and 12min of daylight, June has the longest days of the year.
July tends to be the warmest month, with temperatures averaging a daily high of 79.2°F (26.2°C) and a low of 61.3°F (16.3°C).
The month with the most sunshine is July, with an average of 10.1h of sunshine.
December is the month with the least rainfall in Napoleon. Rain falls for 6.5 days and accumulates 0.87" (22mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Napoleon, MI
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.9°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 (17.1°F).
Average pressure
Napoleon, MI
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.07"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:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.08"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Napoleon, MI
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.7mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.2mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity
Napoleon, MI
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall
Napoleon, MI
- Average rainfall in January:
1.06" - Average rainfall in February:
1.1" - Average rainfall in March:
1.46" - Average rainfall in April:
2.52" - Average rainfall in May:
2.83" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.28" - Average rainfall in August:
1.85" - Average rainfall in September:
1.46" - Average rainfall in October:
1.38" - Average rainfall in November:
1.14" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days
Napoleon, MI
- Average rainfall days in January:
5.5 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
10.4 days - Average rainfall days in April:
15.1 days - Average rainfall days in May:
18.1 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
15.5 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
9 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (4.8 days).
Average snowfall
Napoleon, MI
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Napoleon, MI
- Average snowfall days in January:
13 days - Average snowfall days in February:
11.6 days - Average snowfall days in March:
7.8 days - Average snowfall days in April:
2.6 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:
0.5 days - Average snowfall days in November:
5.2 days - Average snowfall days in December:
10.5 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Napoleon, MI
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
2h and 54min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 36min - Average sunshine in April:
6h and 48min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 36min - Average sunshine in September:
7h and 54min - Average sunshine in October:
5h and 36min - Average sunshine in November:
4h and 36min - Average sunshine in December:
3h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days
Napoleon, MI
- Average sunshine days in January:
14.3 days - Average sunshine days in February:
12.6 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
9.9 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
10.4 days - Average sunshine days in August:
11.8 days - Average sunshine days in September:
14.2 days - Average sunshine days in October:
15.2 days - Average sunshine days in November:
17.1 days - Average sunshine days in December:
15.7 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.9 days).
Average UV index
Napoleon, 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 and December (UV index 1).
Average cloud cover
Napoleon, MI
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Napoleon, MI
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
