October weather forecastKirby, MT
October
Weather in October
October, like September, is another mild autumn month in Kirby, Montana, with an average temperature varying between 39°F (3.9°C) and 56.8°F (13.8°C).Temperature
The start of October is characterized by a significant decrease in the average high-temperature, moving from a warm 74.1°F (23.4°C) in September to a refreshing 56.8°F (13.8°C). Kirby experiences an average low-temperature reading of 39°F (3.9°C) throughout October.Humidity
The average relative humidity in October is 57%.Rainfall
In Kirby, during October, the rain falls for 9.8 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 127.6 rainfall days, and 14.25" (362mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Kirby, in October, during 2.8 snowfall days, 1.34" (34mm) of snow is typically accumulated. In Kirby, during the entire year, snow falls for 65.3 days and aggregates up to 28.82" (732mm) of snow.Daylight
In October, the average length of the day is 10h and 56min.On the first day of October, sunrise is at 7:07 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:56 pm MDT.
Sunshine
In October, the average sunshine is 6.8h.UV index
The average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 3 during October translates into the following guidance:
Make use of precautions - Suggestions to resist sunburn are communicated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Kirby, MT
- Average high temperature in October: 56.8°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (31.1°F).
- Average low temperature in October: 39°F
The month with the highest average low temperature is July (61.5°F).
The coldest months (with the lowest average low temperature) are January and February (16.2°F).
Average pressure in October
Kirby, MT
- Average pressure in October: 29.99"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in October
Kirby, MT
- Average wind speed in October: 8.3mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and December (6.8mph).
Average humidity in October
Kirby, MT
- Average humidity in October: 57%
The months with the highest relative humidity are January and February (79%).
The month with the lowest relative humidity is August (40%).
Average rainfall in October
Kirby, MT
- Average rainfall in October: 0.94"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in October
Kirby, MT
- Average rainfall days in October: 9.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in October
Kirby, MT
- Average snowfall in October: 1.34"
The month with the highest snowfall is February (5.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Kirby, MT
- Average snowfall days in October: 2.8 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Kirby, 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: 6h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in October
Kirby, MT
- Average sunshine days in October: 17.1 days
The month with the most sunshine days is September (18.2 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in October
Kirby, MT
- Average UV index in October: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in October
Kirby, MT
- Average cloud cover in October: 26
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility in October
Kirby, 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).





