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 is marked by a significant increase, with the average high-temperature advancing from a subzero cold 30.6°F (-0.8°C) in February to a frosty 46°F (7.8°C). Herndon's nighttime temperature in March falls to an average of 31.1°F (-0.5°C).Humidity
In Herndon, the average relative humidity in March is 75%.Rainfall
In Herndon, in March, it is raining for 10.8 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 125.7 rainfall days, and 26.5" (673mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Herndon, in March, during 5.2 snowfall days, 1.89" (48mm) of snow is typically accumulated. In Herndon, during the entire year, snow falls for 38.1 days and aggregates up to 15.31" (389mm) of snow.Daylight
The average length of the day in March is 11h and 58min.On the first day of the month, sunrise is at 6:50 am and sunset at 6:08 pm CST. On the last day of March, sunrise is at 7:00 am and sunset at 7:42 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 5.9h.UV index
In Herndon, the average daily maximum UV index in March is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In March, a regular UV index of 3 translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Herndon in March?
What is the average humidity in March in Herndon?
How much does it rain in March?
How much does it snow in March?
What is the average length of the day in March in Herndon?
When are sunrise and sunset in March?
When does Daylight Saving Time (DST) start in March?
How many hours of sunshine does Herndon have in March?
How high is the UV index in March?
Average temperature in March
Herndon, IA
- Average high temperature in March: 46°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in March: 31.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in March
Herndon, IA
- 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 (29.88"Hg).
Average wind speed in March
Herndon, IA
- Average wind speed in March: 10.4mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in March
Herndon, IA
- Average humidity in March: 75%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in March
Herndon, IA
- Average rainfall in March: 1.54"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in March
Herndon, IA
- Average rainfall days in March: 10.8 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in March
Herndon, IA
- Average snowfall in March: 1.89"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
Herndon, IA
- Average snowfall days in March: 5.2 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Herndon, IA
- 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: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in March
Herndon, IA
- Average sunshine days in March: 16 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in March
Herndon, IA
- Average UV index in March: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in March
Herndon, IA
- Average cloud cover in March: 51
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in March
Herndon, IA
- 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).
Herndon, Iowa, USA
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