March weather forecastBethalto, IL
March
Weather in March
The first month of the spring, March, is a cool month in Bethalto, Illinois, with temperature in the range of an average high of 53.4°F (11.9°C) and an average low of 37.2°F (2.9°C).Temperature
An upsurge in temperatures occurs as February gives way to March, with average highs shifting from a wintry 41°F (5°C) to a fresh 53.4°F (11.9°C). In March, the temperature in Bethalto drops to an average of 37.2°F (2.9°C) at night.Humidity
In March, the average relative humidity in Bethalto is 76%.Rainfall
In Bethalto, in March, it is raining for 12.3 days, with typically 1.57" (40mm) of accumulated precipitation. In Bethalto, during the entire year, the rain falls for 138 days and collects up to 23.9" (607mm) of precipitation.Snowfall
Months with snowfall in Bethalto are January through April, November and December. In Bethalto, in March, during 2 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Bethalto, during the entire year, snow falls for 18.6 days and aggregates up to 4.53" (115mm) of snow.Daylight
In March, the average length of the day 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 Bethalto, sunrise is at 6:44 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 in Bethalto is 6.4h.UV index
The average daily maximum UV index in March is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during March leads to these advisories:
Put precautions into practice - Protective measures against sun-induced damage are advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Bethalto, IL
- Average high temperature in March: 53.4°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 (23.4°F).
Average pressure in March
Bethalto, 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
Bethalto, IL
- Average wind speed in March: 9.4mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in March
Bethalto, 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
Bethalto, IL
- Average rainfall in March: 1.57"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in March
Bethalto, IL
- Average rainfall days in March: 12.3 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in March
Bethalto, IL
- Average snowfall in March: 0.43"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in March
Bethalto, IL
- Average snowfall days in March: 2 days
The month with the highest number of snowfall days is January (6 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
Bethalto, 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 24min
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
Bethalto, IL
- Average sunshine days in March: 15.3 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in March
Bethalto, IL
- Average UV index in March: 4
The months with the highest UV index are May, 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
Bethalto, IL
- Average cloud cover in March: 47
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in March
Bethalto, 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).





