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, like December, is another subzero cold winter month in Decatur, Michigan, with an average temperature ranging between max 28.9°F (-1.7°C) and min 18.9°F (-7.3°C). Temperature readings reach their annual highs in January, averaging 28.9°F (-1.7°C) and a minimum average of 18.9°F (-7.3°C). Weather in January »
Weather in February
February, the last month of the winter in Decatur, is an icy month, with an average temperature varying between 21°F (-6.1°C) and 32.4°F (0.2°C). Decatur signifies an average high-temperature of a wintry 32.4°F (0.2°C) in February, closely mirroring the 28.9°F (-1.7°C) of January. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Decatur, Michigan, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 29.3°F (-1.5°C). With the onset of March, Decatur's weather sees a temperature rise, transitioning from a cold 32.4°F (0.2°C) in February to a frosty 43.5°F (6.4°C). Weather in March »
Weather in April
April is a fresh spring month in Decatur, Michigan, with an average temperature ranging between min 38.8°F (3.8°C) and max 55.2°F (12.9°C). Decatur's transition into April is marked by a rise in the average high-temperature, advancing from a frosty 43.5°F (6.4°C) in March to a fresh 55.2°F (12.9°C). Weather in April »
Weather in May
May, the last month of the spring in Decatur, is an enjoyable month, with an average temperature varying between 49.8°F (9.9°C) and 67.1°F (19.5°C). The shift from April to May sees an increase in the average high-temperature, transitioning from a fresh 55.2°F (12.9°C) to a comfortable 67.1°F (19.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Decatur, Michigan, with an average temperature varying between 58.5°F (14.7°C) and 75.7°F (24.3°C). In June, the meteorological conditions subtly change with the average high-temperature edging from a refreshing 67.1°F (19.5°C) in May to a moderately hot 75.7°F (24.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Decatur, Michigan, with an average temperature fluctuating between 61.9°F (16.6°C) and 79.7°F (26.5°C). Decatur's warmest weather arrives in July, when temperatures average a high of 79.7°F (26.5°C) and a low of 61.9°F (16.6°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Decatur, Michigan, with temperature in the range of an average low of 60.6°F (15.9°C) and an average high of 78.4°F (25.8°C). With the arrival of August, Decatur's average high-temperature registers at a still moderately hot 78.4°F (25.8°C), indicating a subtle variation from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Decatur, Michigan, with an average temperature ranging between min 54.5°F (12.5°C) and max 72.7°F (22.6°C). In September, the average high-temperature marginally drops from a warm 78.4°F (25.8°C) in August to a pleasant 72.7°F (22.6°C). Weather in September »
Weather in October
October, the same as September, in Decatur, Michigan, is another refreshing autumn month, with an average temperature varying between 59.5°F (15.3°C) and 45°F (7.2°C). The start of October signals a decrease in the average high-temperature, transitioning from an agreeable 72.7°F (22.6°C) in September to a refreshing 59.5°F (15.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Decatur, Michigan, with an average temperature ranging between max 45.9°F (7.7°C) and min 34°F (1.1°C). In Decatur, the average high-temperature in November decreases from a mild 59.5°F (15.3°C) in October to a chilly 45.9°F (7.7°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Decatur, Michigan, with an average temperature fluctuating between 35.2°F (1.8°C) and 26.4°F (-3.1°C). A change in temperatures is noted as November gives way to December, with average highs reducing from a frosty 45.9°F (7.7°C) to a wintry 35.2°F (1.8°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Decatur?
January, on average, is the coldest month, registering a high temperature of 28.9°F (-1.7°C) and a low of 18.9°F (-7.3°C).
What is the most humid month in Decatur?
With an average relative humidity of 87%, January is the most humid month.
How much does it rain in Decatur?
Throughout the year, there are 139.4 rainfall days, and 20" (508mm) of precipitation is accumulated.
When does it snow in Decatur?
Months with snowfall in Decatur, Michigan, are January through May, October through December.
When does it snow the most in Decatur?
January is the month with the most snowfall in Decatur. Snow falls for 17.6 days and accumulates 4.29" (109mm) of snow.
How many days does it snow in Decatur?
In Decatur, during the entire year, snow falls for 63 days and aggregates up to 14.45" (367mm) of snow.
What is the month with the least sunshine in Decatur?
With an average of 2.6h of sunshine, January has the least sunshine of the year in Decatur, Michigan.
What are the months with the lowest UV index in Decatur?
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Decatur.
What is the driest month in Decatur?
February is the month with the least rainfall. Rain falls for 4.8 days and accumulates 0.98" (25mm) of precipitation.
When is Daylight Saving Time (DST) in Decatur?
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 are the least humid months in Decatur?
The months with the lowest humidity are April and October, with an average relative humidity of 77%.
What is the rainiest month in Decatur?
The month with the most rainfall is June, when the rain falls for 14.1 days and typically aggregates up to 2.6" (66mm) of precipitation.
When it does not snow in Decatur?
In Decatur, snow does not fall in June through September.
When are the longest days in Decatur?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Decatur?
June and August, with an average maximum UV index of 6, are months with the highest UV index in Decatur.
What part of the year is the hottest in Decatur?
The warmest temperatures in Decatur occur during July, when averages reach a peak of 79.7°F (26.5°C) and a low of 61.9°F (16.6°C).
What month has the most sunshine in Decatur?
With an average of 10.2h of sunshine, July has the most sunshine of the year in Decatur, Michigan.
What is the month with the shortest days in Decatur?
With an average of 9h and 12min of daylight, December has the shortest days of the year in Decatur, Michigan.
Average temperature
Decatur, MI
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°F).
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Decatur, MI
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"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 January, March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Decatur, MI
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.2mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Decatur, MI
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall
Decatur, MI
- Average rainfall in January:
1.3" - Average rainfall in February:
0.98" - Average rainfall in March:
1.02" - Average rainfall in April:
1.97" - Average rainfall in May:
2.48" - Average rainfall in June:
2.6"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.65" - Average rainfall in September:
1.57" - Average rainfall in October:
2.32" - Average rainfall in November:
1.14" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is June (2.6").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days
Decatur, MI
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
14.1 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is February (4.8 days).
Average snowfall
Decatur, MI
- Average snowfall in January:
4.29" - Average snowfall in February:
2.91" - Average snowfall in March:
1.69" - Average snowfall in April:
0.91" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Decatur, MI
- Average snowfall days in January:
17.6 days - Average snowfall days in February:
13.8 days - Average snowfall days in March:
7 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:
6.9 days - Average snowfall days in December:
14.4 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Decatur, MI
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - 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 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
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 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 3min - Average sunshine in April:
6h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 3min - Average sunshine in September:
8h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
4h and 1min - Average sunshine in December:
3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days
Decatur, MI
- Average sunshine days in January:
9.8 days - Average sunshine days in February:
10.3 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
13.2 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
13.7 days - Average sunshine days in September:
14.3 days - Average sunshine days in October:
13.2 days - Average sunshine days in November:
13.9 days - Average sunshine days in December:
11.2 days
The month with the most sunshine days is March (14.4 days).
The month with the least sunshine days is January (9.8 days).
Average UV index
Decatur, MI
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Decatur, MI
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Decatur, MI
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Decatur, Michigan, 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