March weather forecastLanark, IL
March
Weather in March
March ushers in the city of Lanark into spring, although it bids adieu to the snowfall that catered to the scenic canvas of the winter months. With the temperature sliding up to 44.2°F (6.8°C), it declares a cessation of the biting cold that characterized the previous months. The relative humidity drops to 78%, hinting at the inevitable retreat of winter. Concurrently, rainfall replaces snowfall as the dominant type of precipitation with days receiving rainfall more than doubling from the previous month. As spring starts to unfurl its charm, daylight hours surge to 12 hours, a welcome beacon of better weather.Temperature
The shift from February to March is characterized by a clear increase in the average high-temperature, escalating from a subzero cold 29.8°F (-1.2°C) to a frosty 44.2°F (6.8°C). Lanark's nights in March cool down to an average low-temperature of 29.7°F (-1.3°C).Humidity
In Lanark, the average relative humidity in March is 78%.Rainfall
In March, the rain falls for 10.6 days. Throughout March, 1.1" (28mm) of precipitation is accumulated. In Lanark, Illinois, during the entire year, the rain falls for 130.8 days and collects up to 17.95" (456mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Lanark, in March, during 5.3 snowfall days, 0.87" (22mm) of snow is typically accumulated. Throughout the year, there are 39.2 snowfall days, and 8.62" (219mm) of snow is accumulated.Daylight
The average length of the day in March is 11h and 58min.On the first day of the month, sunrise is at 6:33 am and sunset at 5:49 pm CST. On the last day of March, sunrise is at 6:42 am and sunset at 7:24 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 is 6.2h.UV index
In March, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In March, the maximum UV index of 3 suggests these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Lanark, IL
- Average high temperature in March: 44.2°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in March: 29.7°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in March
Lanark, IL
- Average pressure in March: 30.08"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in March
Lanark, IL
- Average wind speed in March: 9.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in March
Lanark, IL
- Average humidity in March: 78%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in March
Lanark, IL
- Average rainfall in March: 1.1"
The wettest month (with the highest rainfall) is May (2.76").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in March
Lanark, IL
- Average rainfall days in March: 10.6 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in March
Lanark, IL
- Average snowfall in March: 0.87"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in March
Lanark, IL
- Average snowfall days in March: 5.3 days
The month with the highest number of snowfall days is January (11.2 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
Lanark, IL
- Average daylight in March: 12h and 0min
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 March: 6h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in March
Lanark, IL
- Average sunshine days in March: 16.7 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10 days).
Average UV index in March
Lanark, IL
- Average UV index in March: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in March
Lanark, IL
- Average cloud cover in March: 50
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in March
Lanark, IL
- Average visibility in March: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).





