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
Helena in March shows a temperature shift, moving from an average high of a subzero cold 29.7°F (-1.3°C) in February to a wintry 39.7°F (4.3°C). March nights in Helena are marked by an average temperature drop to a freezing cold 23.2°F (-4.9°C).Humidity
In Helena, the average relative humidity in March is 78%.Rainfall
In Helena, in March, during 12.8 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 123.7 rainfall days, and 12.4" (315mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Helena. In March, in Helena, it is snowing for 11.7 days. Throughout March, 5.12" (130mm) of snow is accumulated. Throughout the year, in Helena, there are 80.4 snowfall days, and 34.88" (886mm) of snow is accumulated.Daylight
In Helena, the average length of the day in March is 11h and 57min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:14 pm MST. On the last day of March, sunrise is at 7:07 am and sunset at 7:56 pm MDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from MDT to MST.
Sunshine
In Helena, Montana, the average sunshine in March is 7.8h.UV index
The average daily maximum UV index in March is 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: In March, the maximum UV index of 2 suggests this advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Helena during March?
What is the average humidity in March in Helena?
How many days does it rain in March in Helena?
How many days does it snow in March in Helena?
What is the average length of the day in March in Helena?
When are sunrise and sunset in March in Helena?
When does Daylight Saving Time (DST) start in March in Helena?
How many hours of sunshine does Helena have in March?
How high is the UV index in March in Helena?
Average temperature in March
Helena, MT
- Average high temperature in March: 39.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in March: 23.2°F
The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is December (14.2°F).
Average pressure in March
Helena, MT
- Average pressure in March: 30.03"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in March
Helena, MT
- Average wind speed in March: 6.6mph
The windiest month (with the highest average wind speed) is November (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in March
Helena, MT
- Average humidity in March: 78%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).
Average rainfall in March
Helena, MT
- Average rainfall in March: 1.1"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.63").
Average rainfall days in March
Helena, MT
- Average rainfall days in March: 12.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is November (7 days).
Average snowfall in March
Helena, MT
- Average snowfall in March: 5.12"
The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July and August (0").
Average snowfall days in March
Helena, MT
- Average snowfall days in March: 11.7 days
The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in March /
Average sunshine in March
Helena, MT
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in March: 7h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in March
Helena, MT
- Average sunshine days in March: 11 days
The month with the most sunshine days is July (20.5 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in March
Helena, MT
- Average UV index in March: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in March
Helena, MT
- Average cloud cover in March: 42
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in March
Helena, MT
- Average visibility in March: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Helena, Montana, USA
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