Helena
Montana, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Helena, MT

The State Capital building of Montana in Helena city, set on a beautiful natural park
The State Capital building of Montana in Helena city, set on a beautiful natural park
March, the first month of the spring, in Helena, is a chilly month, with temperature in the range of an average high of 48.2°F (9°C) and an average low of 24.3°F (-4.3°C).

Temperature

In Helena, the average high-temperature in March increases, from a cold 38.7°F (3.7°C) in February, to a chilly 48.2°F (9°C). In March, in Helena, Montana, the average low-temperature is 24.3°F (-4.3°C).

Humidity

The average relative humidity in Helena is 60.1%.

Rainfall

In Helena, it is raining for 7.7 days, with typically 0.6" (15mm) of accumulated precipitation. In Helena, during the entire year, the rain falls for 91.6 days and collects up to 11.2" (284.9mm) of precipitation.

Snowfall

January through May, August through December are months with snowfall in Helena. In Helena, snow falls for 5 days, with typically accumulated 6.2" (157.5mm) of snow. Throughout the year, in Helena, there are 32.8 snowfall days, and 38.1" (967.8mm) of snow is accumulated.

Daylight

In Helena, the average length of the day is 12h.

Sunshine

In March, the average sunshine in Helena is 7.3h.

UV index

In March, the average daily maximum UV index in Helena is 3. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 3 in March transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in March in Helena?

In Helena, in March, the average high-temperature is 48.2°F (9°C), and the average low-temperature is 24.3°F (-4.3°C).

What is the average humidity in March in Helena?

In March, the average relative humidity is 60.1%.

How many days does it rain in March in Helena?

In March, the rain falls for 7.7 days. Throughout March, 0.6" (15mm) of precipitation is accumulated.

How much does it snow in Helena in March?

In March, in Helena, Montana, it is snowing for 5 days. Throughout March, 6.2" (157.5mm) of snow is accumulated.

What is the average length of the day in March in Helena?

In Helena, the average length of the day in March is 12h.

How many hours of sunshine does Helena have in March?

In March, the average sunshine in Helena, Montana, is 7.3h.

What is the UV index intensity in March in Helena?

The average daily maximum UV index in March is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in March - Helena, MT
  • Average high temperature in March: 48.2°F

The warmest month (with the highest average high temperature) is July (85.7°F).
The month with the lowest average high temperature is December (31.7°F).

  • Average low temperature in March: 24.3°F

The month with the highest average low temperature is July (54.3°F).
The coldest month (with the lowest average low temperature) is December (11.9°F).

Average humidity in March - Helena, MT
  • Average humidity in March: 60.1%

The month with the highest relative humidity is December (68.1%).
The month with the lowest relative humidity is July (46.4%).

Average rainfall in March - Helena, MT
  • Average rainfall in March: 0.6"

The wettest month (with the highest rainfall) is June (2.1").
The driest month (with the lowest rainfall) is February (0.3").

Average rainfall days in March - Helena, MT
  • Average rainfall days in March: 7.7 days

The month with the highest number of rainy days is June (11.2 days).
The month with the lowest number of rainy days is February (5.9 days).

Average snowfall in March - Helena, MT
  • Average snowfall in March: 6.2"

The month with the highest snowfall is December (7.3").
Months with the lowest snowfall are June and July (0").

Average snowfall days in March - Helena, MT
  • Average snowfall days in March: 5 days

The month with the highest number of snowfall days is December (6 days).
The month with the lowest number of snowfall days is July (0 days).

Average daylight in March / Average sunshine in March - Helena, MT
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in March: 7.3h

The month with most sunshine is July (Average sunshine: 11.9h).
The month with least sunshine is December (Average sunshine: 3.2h).

Average UV index in March - Helena, MT
  • Average UV index in March: 3

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 1).