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

January 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
Enero in Helena, Montana, is a cold winter month, with average temperature ranging between min 12.9°F (-10.6°C) and max 33.3°F (0.7°C).

Temperature

In Helena, the average high-temperature is essentially the same as in Diciembre - a cold 33.3°F (0.7°C). In Helena, in Enero, the average low-temperature is 12.9°F (-10.6°C).

Humidity

In Enero, the average relative humidity is 66%.

Rainfall

In Helena, Montana, in Enero, it is raining for 6.2 days, with typically 0.36" (9.1mm) of accumulated precipitation. Throughout the year, in Helena, there are 91.6 rainfall days, and 11.22" (284.9mm) of precipitation is accumulated.

Snowfall

Enero through Mayo, Agosto through Diciembre are months with snowfall. In Enero, it is snowing for 5.6 days. Throughout Enero, 6.2" (157.5mm) of snow is accumulated. Throughout the year, there are 32.8 snowfall days, and 38.1" (967.8mm) of snow is accumulated.

Daylight

In Enero, the average length of the day is 9.1h.

Sunshine

In Helena, the average sunshine in Enero is 3.9h.

UV index

Enero, Noviembre and Diciembre, with an average maximum UV index of 1, are months with the lowest UV index in Helena. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 1 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in Enero in Helena?

The average high-temperature, in Enero, is 33.3°F (0.7°C), while the average low-temperature is 12.9°F (-10.6°C).

What is the average humidity in Enero in Helena?

The average relative humidity in Enero is 66%.

How much does it rain in Helena in Enero?

In Helena, Montana, in Enero, during 6.2 rainfall days, 0.36" (9.1mm) of precipitation is typically accumulated.

How many days does it snow in Enero in Helena?

In Helena, in Enero, snow falls for 5.6 days, with typically accumulated 6.2" (157.5mm) of snow.

How many hours of daylight does Helena have in Enero?

The average length of the day in Enero in Helena is 9.1h.

How long on average sun shines in Enero in Helena?

In Helena, the average sunshine in Enero is 3.9h.

When is the lowest UV index in Helena?

Months with the lowest UV index in Helena, Montana, are Enero, Noviembre and Diciembre, with an average maximum UV index of 1.

What is the UV index reading in Enero in Helena?

The average daily maximum UV index in Enero in Helena is 1. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.
Average temperature in January - Helena, MT
  • Average high temperature in January: 0.7°C

The warmest month (with the highest average high temperature) is July (29.8°C).
The month with the lowest average high temperature is December (-0.2°C).

  • Average low temperature in January: -10.6°C

The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is December (-11.2°C).

Average humidity in January - Helena, MT
  • Average humidity in January: 66%

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 January - Helena, MT
  • Average rainfall in January: 9.1mm

The wettest month (with the highest rainfall) is June (52.3mm).
The driest month (with the lowest rainfall) is February (7.6mm).

Average rainfall days in January - Helena, MT
  • Average rainfall days in January: 6.2 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 January - Helena, MT
  • Average snowfall in January: 157.5mm

The month with the highest snowfall is December (185.4mm).
Months with the lowest snowfall are June and July (0mm).

Average snowfall days in January - Helena, MT
  • Average snowfall days in January: 5.6 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 January / Average sunshine in January - Helena, MT
  • Average daylight in January: 9.1h

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 January: 3.9h

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 January - Helena, MT
  • Average UV index in January: 1

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).