October weather forecastMammoth, MT
October
Weather in October
October, like September, in Mammoth, Montana, is another fresh autumn month, with an average temperature varying between 30.9°F (-0.6°C) and 50.7°F (10.4°C).Temperature
The shift into October is marked by a considerable temperature decrease, with the average high-temperature dropping from an enjoyable 67.6°F (19.8°C) in September to a fresh 50.7°F (10.4°C). During October, Mammoth's temperature falls to a steady low-temperature average of 30.9°F (-0.6°C).Humidity
In October, the average relative humidity is 63%.Rainfall
In Mammoth, in October, it is raining for 13.1 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 158 rainfall days, and 12.2" (310mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.28" (7mm) of snow. Throughout the year, there are 20.8 snowfall days, and 5.12" (130mm) of snow is accumulated.Daylight
The average length of the day in October is 10h and 55min.On the first day of October, sunrise is at 7:27 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 6:15 pm MDT.
Sunshine
The average sunshine in October is 7.3h.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 of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 2 in October transforms into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Mammoth, MT
- Average high temperature in October: 50.7°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (26.4°F).
- Average low temperature in October: 30.9°F
The month with the highest average low temperature is July (47.7°F).
The coldest month (with the lowest average low temperature) is December (11.3°F).
Average pressure in October
Mammoth, MT
- Average pressure in October: 30.06"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Mammoth, MT
- Average wind speed in October: 5.9mph
The windiest month (with the highest average wind speed) is November (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in October
Mammoth, MT
- Average humidity in October: 63%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).
Average rainfall in October
Mammoth, MT
- Average rainfall in October: 0.87"
The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in October
Mammoth, MT
- Average rainfall days in October: 13.1 days
The month with the highest number of rainy days is April (18.6 days).
The month with the least rainy days is August (8.6 days).
Average snowfall in October
Mammoth, MT
- Average snowfall in October: 0.28"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Mammoth, MT
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Mammoth, MT
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in October: 7h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in October
Mammoth, MT
- Average sunshine days in October: 15.8 days
The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is April (7.8 days).
Average UV index in October
Mammoth, 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
Mammoth, MT
- Average cloud cover in October: 26
The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility in October
Mammoth, 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).
