October weather forecastSimpson, MT
October
Weather in October
October, like September, in Simpson, Montana, is a cool autumn month, with an average temperature varying between 54.3°F (12.4°C) and 38.8°F (3.8°C).Temperature
In Simpson, stepping into October signifies a significant temperature decrement, moving down from September's agreeable 70.5°F (21.4°C) to a fresh 54.3°F (12.4°C). The nights of October anticipate an average low-temperature of 38.8°F (3.8°C).Humidity
In Simpson, the average relative humidity in October is 59%.Rainfall
In Simpson, in October, it is raining for 7.7 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, there are 98.7 rainfall days, and 8.23" (209mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Simpson, during October, snow falls for 1.9 days and regularly aggregates up to 0.79" (20mm) of snow. Throughout the year, there are 53.5 snowfall days, and 14.25" (362mm) of snow is accumulated.Daylight
The average length of the day in October is 10h and 46min.On the first day of the month, sunrise is at 7:21 am and sunset at 6:58 pm. On the last day of October, sunrise is at 8:07 am and sunset at 6:01 pm MDT.
Sunshine
In October, the average sunshine is 6.6h.UV index
January through March, 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 low health risk from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 in October translates into these instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To cut down UV radiation exposure by about half, sport a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Simpson, MT
- Average high temperature in October: 54.3°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (27.1°F).
- Average low temperature in October: 38.8°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in October
Simpson, MT
- Average pressure in October: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in October
Simpson, MT
- Average wind speed in October: 10.1mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in October
Simpson, MT
- Average humidity in October: 59%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).
Average rainfall in October
Simpson, MT
- Average rainfall in October: 0.59"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").
Average rainfall days in October
Simpson, MT
- Average rainfall days in October: 7.7 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).
Average snowfall in October
Simpson, MT
- Average snowfall in October: 0.79"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Simpson, MT
- Average snowfall days in October: 1.9 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Simpson, MT
- Average daylight in October: 10h and 48min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in October: 6h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in October
Simpson, MT
- Average sunshine days in October: 19.7 days
The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in October
Simpson, MT
- Average UV index in October: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in October
Simpson, MT
- Average cloud cover in October: 29
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in October
Simpson, MT
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
