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 arrival sees a rise in the average high-temperature, jumping from February's wintry 40.8°F (4.9°C) to a fresh 53.2°F (11.8°C). In Alton, in March, the average low-temperature is a cold 37.2°F (2.9°C).Humidity
In March, the average relative humidity is 76%.Rainfall
In Alton, in March, during 11.2 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 128.3 rainfall days, and 18.9" (480mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Alton, Illinois. March is the last month it regularly snows. During 2.4 snowfall days, in March, Alton aggregates 0.43" (11mm) of snow. Throughout the year, in Alton, there are 17.9 snowfall days, and 3.58" (91mm) of snow is accumulated.Daylight
In Alton, the average length of the day in March is 11h and 59min.On the first day of the month, sunrise is at 6:31 am and sunset at 5:53 pm CST. On the last day of March, in Alton, sunrise is at 6:45 am and sunset at 7:23 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
In March, the average sunshine is 6.3h.UV index
In Alton, the average daily maximum UV index in March is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 during March translates into the following guidance:
Exercise prevention - Protecting skin and eyes from harm is required. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Boost your sun resistance with garments that are densely woven yet spacious. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are March temperatures in Alton?
What is the average humidity in March in Alton?
How many days does it rain in March in Alton?
What is the last month it snows in Alton?
How many hours of daylight does Alton have in March?
When are sunrise and sunset in March in Alton?
When does Daylight Saving Time (DST) start in March in Alton?
How long on average sun shines in March in Alton?
How high is the UV index in March in Alton?
Average temperature in March
Alton, IL
- Average high temperature in March: 53.2°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in March: 37.2°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in March
Alton, IL
- Average pressure in March: 30.07"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in March
Alton, IL
- Average wind speed in March: 9.3mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in March
Alton, IL
- Average humidity in March: 76%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in March
Alton, IL
- Average rainfall in March: 1.26"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in March
Alton, IL
- Average rainfall days in March: 11.2 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in March
Alton, IL
- Average snowfall in March: 0.43"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
Alton, IL
- Average snowfall days in March: 2.4 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Alton, IL
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in March: 6h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days in March
Alton, IL
- Average sunshine days in March: 16.1 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in March
Alton, IL
- Average UV index in March: 4
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
Alton, IL
- Average cloud cover in March: 47
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in March
Alton, IL
- Average visibility in March: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Alton, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location