October weather forecastGarrison, MT
October
Weather in October
October, the same as September, in Garrison, Montana, is a frosty autumn month, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 29.8°F (-1.2°C).Temperature
October's arrival witnesses a distinct temperature drop, receding from September's enjoyable 65.7°F (18.7°C) to a chilly 48.6°F (9.2°C). Nightly temperatures drop to an average low of 29.8°F (-1.2°C) in October.Humidity
In Garrison, the average relative humidity in October is 68%.Rainfall
In Garrison, in October, during 9.2 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 122.8 rainfall days, and 17.13" (435mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In October, it is snowing for 8.5 days. Throughout October, 4.53" (115mm) of snow is accumulated. In Garrison, during the entire year, snow falls for 125.4 days and aggregates up to 77.91" (1979mm) of snow.Daylight
The average length of the day in October is 10h and 53min.On the first day of October, sunrise is at 7:30 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 6:17 pm MDT.
Sunshine
In October, the average sunshine is 7.1h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In October, an average UV index of 2 transforms into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Garrison, MT
- Average high temperature in October: 48.6°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in October: 29.8°F
The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (12.6°F).
Average pressure in October
Garrison, MT
- Average pressure in October: 30.06"Hg
The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Garrison, MT
- Average wind speed in October: 6mph
The windiest months (with the highest average wind speed) are January, April and November (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in October
Garrison, MT
- Average humidity in October: 68%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are July and August (49%).
Average rainfall in October
Garrison, MT
- Average rainfall in October: 1.02"
The wettest month (with the highest rainfall) is June (2.52").
The driest month (with the least rainfall) is August (0.67").
Average rainfall days in October
Garrison, MT
- Average rainfall days in October: 9.2 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in October
Garrison, MT
- Average snowfall in October: 4.53"
The month with the highest snowfall is February (12.76").
The months with the least snowfall are July and August (0").
Average snowfall days in October
Garrison, MT
- Average snowfall days in October: 8.5 days
The month with the highest number of snowfall days is February (20.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in October /
Average sunshine in October
Garrison, MT
- Average daylight in October: 10h and 54min
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 October: 7h and 6min
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 October
Garrison, MT
- Average sunshine days in October: 16.3 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is April (6.3 days).
Average UV index in October
Garrison, MT
- Average UV index in October: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in October
Garrison, MT
- Average cloud cover in October: 31
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in October
Garrison, MT
- Average visibility in October: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
