March weather forecastCalmar, IA
March
Weather in March
Transitioning from winter to spring, March in Calmar, Iowa leads to a notable rise in temperatures. As the sun shines for longer and the days get longer, the icy grip of winter starts to loosen. This is a season of change, as the curtains of snowfall gradually give way to rainfall. The landscape begins to thaw, sparking the first signs of spring's arrival. As the snow retreats, residents welcome the return of greenery and flowering blooms which start to add sparks of color to the cityscape.Temperature
The transition from February to March brings a clear temperature rise, with average high-temperatures increasing from a subzero cold 26.1°F (-3.3°C) to a cold 41°F (5°C). During March, the nighttime temperature averages of 26.8°F (-2.9°C).Humidity
The average relative humidity in March in Calmar, Iowa, is 81%.Rainfall
In Calmar, Iowa, in March, during 10.7 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Calmar, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Calmar, during March, snow falls for 8.8 days and regularly aggregates up to 2.95" (75mm) of snow. Throughout the year, in Calmar, Iowa, there are 60.9 snowfall days, and 24.37" (619mm) 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 6:42 am and sunset at 5:57 pm CST. On the last day of March, sunrise is at 6:49 am and sunset at 7:33 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 5.8h.UV index
In March, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 2 in March translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Calmar, IA
- Average high temperature in March: 41°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in March: 26.8°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in March
Calmar, IA
- Average pressure in March: 30.08"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in March
Calmar, IA
- Average wind speed in March: 9.9mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in March
Calmar, IA
- Average humidity in March: 81%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).
Average rainfall in March
Calmar, IA
- Average rainfall in March: 1.81"
The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in March
Calmar, IA
- Average rainfall days in March: 10.7 days
The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in March
Calmar, IA
- Average snowfall in March: 2.95"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
Calmar, IA
- Average snowfall days in March: 8.8 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Calmar, IA
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in March: 5h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in March
Calmar, IA
- Average sunshine days in March: 13 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).
Average UV index in March
Calmar, IA
- Average UV index in March: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in March
Calmar, IA
- Average cloud cover in March: 54
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in March
Calmar, IA
- Average visibility in March: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).





