Contents
- Weather in March
- Frequently asked questions
- Average temperature in March
- Average pressure in March
- Average wind speed in March
- Average humidity in March
- Average rainfall in March
- Average rainfall days in March
- Average snowfall in March
- Average snowfall days in March
- Average daylight in March
- Average sunshine in March
- Average sunshine days in March
- Average UV index in March
- Average cloud cover in March
- Average visibility in March
Weather in March
Temperature
March's onset is marked by a temperature increase, moving from a wintry 37.8°F (3.2°C) in February to a cool 50.5°F (10.3°C). In March, Decatur reports a consistent average low-temperature of 35.6°F (2°C) during the nights.Humidity
In March, the average relative humidity in Decatur is 75%.Rainfall
In Decatur, during March, the rain falls for 11.6 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Decatur, during the entire year, the rain falls for 130.2 days and collects up to 16.34" (415mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Decatur, during March, snow falls for 2.6 days and regularly aggregates up to 0.98" (25mm) of snow. In Decatur, during the entire year, snow falls for 23.1 days and aggregates up to 5.67" (144mm) of snow.Daylight
The average length of the day in March is 11h and 59min.On the first day of March, sunrise is at 6:27 am and sunset at 5:48 pm CST. On the last day of the month, sunrise is at 6:40 am and sunset at 7:19 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.
Sunshine
The average sunshine in March in Decatur is 6.4h.UV index
In March, the average daily maximum UV index in Decatur, Illinois, is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 3 in March translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average March temperature in Decatur?
What is the average humidity in March in Decatur?
How many days does it rain in March in Decatur?
How much does it snow in Decatur in March?
What is the average length of the day in March in Decatur?
When is the sunrise / sunset in March in Decatur?
When does Daylight Saving Time (DST) start in March in Decatur?
How long on average sun shines in March in Decatur?
How high is the UV index in March in Decatur?
Average temperature in March
Decatur, IL
- Average high temperature in March: 50.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in March: 35.6°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in March
Decatur, IL
- Average pressure in March: 30.08"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in March
Decatur, IL
- Average wind speed in March: 10.3mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in March
Decatur, IL
- Average humidity in March: 75%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in March
Decatur, IL
- Average rainfall in March: 1.3"
The wettest month (with the highest rainfall) is May (2.01").
The driest months (with the least rainfall) are February and December (0.87").
Average rainfall days in March
Decatur, IL
- Average rainfall days in March: 11.6 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in March
Decatur, IL
- Average snowfall in March: 0.98"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in March
Decatur, IL
- Average snowfall days in March: 2.6 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in March /
Average sunshine in March
Decatur, IL
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in March: 6h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in March
Decatur, IL
- Average sunshine days in March: 16.4 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in March
Decatur, IL
- Average UV index in March: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in March
Decatur, IL
- Average cloud cover in March: 47
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in March
Decatur, IL
- Average visibility in March: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Decatur, Illinois, USA
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