October weather forecast
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

Weather in October

October, the same as September, is a cool autumn month in Helena, Montana, with an average temperature fluctuating between 32.7°F (0.4°C) and 51.3°F (10.7°C).

Temperature

In Helena, the average high-temperature in October plummets from a pleasant 68.2°F (20.1°C) in September to a fresh 51.3°F (10.7°C). In Helena, the average low-temperature is 32.7°F (0.4°C).

Humidity

The average relative humidity in October is 64%.

Rainfall

In Helena, during 10 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Helena, during the entire year, the rain falls for 123.7 days and collects up to 12.4" (315mm) of precipitation.

Snowfall

Months with snowfall in Helena are January through May, September through December. In Helena, during October, snow falls for 4.6 days and regularly aggregates up to 2.72" (69mm) of snow. In Helena, during the entire year, snow falls for 80.4 days and aggregates up to 34.88" (886mm) of snow.

Daylight

The average length of the day in October is 10h and 53min.
On the first day of the month, sunrise is at 7:27 am and sunset at 7:08 pm. On the last day of October, sunrise is at 8:08 am and sunset at 6:14 pm MDT.

Sunshine

In Helena, Montana, the average sunshine in October is 7h.

UV index

The average daily maximum UV index in October in Helena is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in October 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 Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
[Resources]

FAQ

What is the average humidity in October in Helena?

In October, the average relative humidity in Helena is 64%.

How many days does it rain in October in Helena?

In Helena, in October, it is raining for 10 days, with typically 0.83" (21mm) of accumulated precipitation.

How much does it snow in Helena in October?

In Helena, Montana, in October, snow falls for 4.6 days, with typically accumulated 2.72" (69mm) of snow.

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

The average day length in October in Helena, Montana, is 10h and 53min.

When are sunrise and sunset in October in Helena?

On the first day of October, sunrise is at 7:27 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 6:14 pm MDT.

How long on average sun shines in October in Helena?

The average sunshine duration in October is 7h.

How high is the UV index in October in Helena?

In October, the average daily maximum UV index in Helena is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Helena, MT

Average temperature in October - Helena, MT
  • Average high temperature in October: 51.3°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 October: 32.7°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).

[Resources]

Average pressure in October
Helena, MT

Average pressure in October - Helena, MT
  • Average pressure in October: 30.04"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).

[Resources]

Average wind speed in October
Helena, MT

Average wind speed in October - Helena, MT
  • Average wind speed in October: 6.7mph

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).

[Resources]

Average humidity in October
Helena, MT

Average humidity in October - Helena, MT
  • Average humidity in October: 64%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).

[Resources]

Average rainfall in October
Helena, MT

Average rainfall in October - Helena, MT
  • Average rainfall in October: 0.83"

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.63").

[Resources]

Average rainfall days in October
Helena, MT

Average rainfall days in October - Helena, MT
  • Average rainfall days in October: 10 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).

[Resources]

Average snowfall in October
Helena, MT

Average snowfall in October - Helena, MT
  • Average snowfall in October: 2.72"

The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July and August (0").

[Resources]

Average snowfall days in October
Helena, MT

Average snowfall days in October - Helena, MT
  • Average snowfall days in October: 4.6 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).

[Resources]

Average daylight in October /
Average sunshine in October
Helena, MT

Average daylight in October / Average sunshine in October - Helena, MT
  • Average daylight in October: 10h and 53min

The month with the longest days is June (Average daylight: 15h and 46min).
The month with the shortest days is December (Average daylight: 8h and 38min).

  • Average sunshine in October: 7h and 0min

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).

[Resources]

Average sunshine days in October
Helena, MT

Average sunshine days in October - Helena, MT
  • Average sunshine days in October: 17.2 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).

[Resources]

Average UV index in October
Helena, MT

Average UV index in October - Helena, MT
  • Average UV index in October: 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).

[Resources]

Average cloud cover in October
Helena, MT

Average cloud cover in October - Helena, MT
  • Average cloud cover in October: 29

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).

[Resources]

Average visibility in October
Helena, MT

Average visibility in October - Helena, MT
  • Average visibility in October: 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location