March weather forecastMcHenry, IL
March
Weather in March
The first month of the spring, March, is a frosty month in McHenry, Illinois, with an average temperature fluctuating between 42.8°F (6°C) and 28.9°F (-1.7°C).Temperature
As McHenry, Illinois, transitions into March, a rise in the average high-temperature is observed, moving from a subzero cold 30.2°F (-1°C) in February to a chilly 42.8°F (6°C). Throughout March, McHenry witnesses a nighttime temperature average of 28.9°F (-1.7°C).Humidity
The average relative humidity in March is 78%.Rainfall
In McHenry, in March, during 11.1 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, in McHenry, there are 152.4 rainfall days, and 28.07" (713mm) of precipitation is accumulated.Snowfall
Months with snowfall in McHenry are January through May, October through December. In March, it is snowing for 6.8 days. Throughout March, 1.89" (48mm) of snow is accumulated. In McHenry, during the entire year, snow falls for 49 days and aggregates up to 16.5" (419mm) of snow.Daylight
In McHenry, Illinois, the average length of the day in March is 11h and 58min.On the first day of the month, sunrise is at 6:26 am and sunset at 5:43 pm CST. On the last day of March, sunrise is at 6:35 am and sunset at 7:18 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 McHenry, Illinois, is 6.1h.UV index
In March, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during March leads to these advisories:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
McHenry, IL
- Average high temperature in March: 42.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in March: 28.9°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in March
McHenry, IL
- Average pressure in March: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in March
McHenry, IL
- Average wind speed in March: 9.6mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in March
McHenry, IL
- Average humidity in March: 78%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in March
McHenry, IL
- Average rainfall in March: 1.77"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.34").
Average rainfall days in March
McHenry, IL
- Average rainfall days in March: 11.1 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in March
McHenry, IL
- Average snowfall in March: 1.89"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
McHenry, IL
- Average snowfall days in March: 6.8 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
McHenry, 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 6min).
- Average sunshine in March: 6h and 6min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in March
McHenry, IL
- Average sunshine days in March: 14.4 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in March
McHenry, IL
- Average UV index in March: 2
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in March
McHenry, IL
- Average cloud cover in March: 50
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in March
McHenry, IL
- Average visibility in March: 6mi
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).
