October weather forecastGrantsdale, MT
October
Weather in October
October, like September, in Grantsdale, Montana, is another fresh autumn month, with an average temperature varying between 30.4°F (-0.9°C) and 50°F (10°C).Temperature
As September transitions into October, Grantsdale sees a clear drop in the average high-temperature, declining from a comfortable 66.2°F (19°C) to a fresh 50°F (10°C). Grantsdale's temperature in October lowers to a consistent average of 30.4°F (-0.9°C) during the nights.Humidity
In October, the average relative humidity is 69%.Rainfall
In October, the rain falls for 14.5 days. Throughout October, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 163.6 rainfall days, and 20.83" (529mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Grantsdale, in October, snow falls for 3.5 days, with typically accumulated 1.54" (39mm) of snow. Throughout the year, there are 101.1 snowfall days, and 59.17" (1503mm) of snow is accumulated.Daylight
The average length of the day in October is 10h and 53min.On the first day of October in Grantsdale, sunrise is at 7:36 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 8:17 am and sunset at 6:23 pm MDT.
Sunshine
The average sunshine in October is 7.3h.UV index
In Grantsdale, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in October translates into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Grantsdale, MT
- Average high temperature in October: 50°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in October: 30.4°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in October
Grantsdale, MT
- Average pressure in October: 30.06"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in October
Grantsdale, MT
- Average wind speed in October: 4.8mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in October
Grantsdale, MT
- Average humidity in October: 69%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in October
Grantsdale, MT
- Average rainfall in October: 1.46"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in October
Grantsdale, MT
- Average rainfall days in October: 14.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in October
Grantsdale, MT
- Average snowfall in October: 1.54"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Grantsdale, MT
- Average snowfall days in October: 3.5 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Grantsdale, MT
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in October: 7h and 18min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in October
Grantsdale, MT
- Average sunshine days in October: 13.1 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in October
Grantsdale, 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 February and December (UV index 1).
Average cloud cover in October
Grantsdale, MT
- Average cloud cover in October: 31
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in October
Grantsdale, 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).
