October weather forecastLewistown, MT
October
Weather in October
October introduces Lewistown to a full-fledged autumn as temperatures continue to descend from September values. Snowfall shows a significant jump with the city getting blanketed with 4.61" (117mm), staging a winter preview. The shorter daylight hours, along with fewer sunshine hours, cater to the wintry sensation. Simultaneously, a maintained consistency in wind speed contributes to the wintry vibe. The transition phase witnesses an escalating humidity level, adding to the chilly environment.Temperature
October's arrival witnesses a distinct temperature drop, receding from September's comfortable 67.5°F (19.7°C) to a cool 52.2°F (11.2°C). Lewistown in October anticipates an average nighttime temperature of 35.1°F (1.7°C).Humidity
In October, the average relative humidity is 62%.Rainfall
In October, the rain falls for 9.5 days. Throughout October, 1.22" (31mm) of precipitation is accumulated. Throughout the year, in Lewistown, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Lewistown, in October, during 6.1 snowfall days, 4.61" (117mm) of snow is typically accumulated. Throughout the year, there are 83.4 snowfall days, and 45.51" (1156mm) of snow is accumulated.Daylight
In Lewistown, Montana, the average length of the day in October is 10h and 52min.On the first day of October, sunrise is at 7:17 am and sunset at 6:56 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 6:02 pm MDT.
Sunshine
In October, the average sunshine is 6.5h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 2 in October leads to these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Lewistown, MT
- Average high temperature in October: 52.2°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in October: 35.1°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in October
Lewistown, 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
Lewistown, MT
- Average wind speed in October: 9.9mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in October
Lewistown, MT
- Average humidity in October: 62%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in October
Lewistown, MT
- Average rainfall in October: 1.22"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in October
Lewistown, MT
- Average rainfall days in October: 9.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in October
Lewistown, MT
- Average snowfall in October: 4.61"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in October
Lewistown, MT
- Average snowfall days in October: 6.1 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in October /
Average sunshine in October
Lewistown, 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: 6h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in October
Lewistown, MT
- Average sunshine days in October: 15.3 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in October
Lewistown, 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, April, October, November and December (UV index 2).
Average cloud cover in October
Lewistown, MT
- Average cloud cover in October: 30
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in October
Lewistown, 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).
