October weather forecastHarlem, MT
October
Weather in October
October, like September, in Harlem, Montana, is another fresh autumn month, with temperature in the range of an average low of 38.3°F (3.5°C) and an average high of 53.6°F (12°C).Temperature
October brings a significant decrease in the average high-temperature, moving down from an agreeable 70°F (21.1°C) in September to a fresh 53.6°F (12°C). During October, the temperature tends to dip to an average of 38.3°F (3.5°C) at night.Humidity
In October, the average relative humidity is 60%.Rainfall
In October, the rain falls for 7.5 days. Throughout October, 0.67" (17mm) of precipitation is accumulated. In Harlem, during the entire year, the rain falls for 99.1 days and collects up to 10.12" (257mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In October, it is snowing for 2.3 days. Throughout October, 1.02" (26mm) of snow is accumulated. Throughout the year, there are 57.6 snowfall days, and 21.69" (551mm) of snow is accumulated.Daylight
In October, the average length of the day is 10h and 47min.On the first day of October, sunrise is at 7:15 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 5:56 pm MDT.
Sunshine
The average sunshine in October is 6.6h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 2 in October interprets into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Harlem, MT
- Average high temperature in October: 53.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is February (26.2°F).
- Average low temperature in October: 38.3°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is February (12.6°F).
Average pressure in October
Harlem, MT
- Average pressure in October: 29.97"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in October
Harlem, MT
- Average wind speed in October: 10.6mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in October
Harlem, MT
- Average humidity in October: 60%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (42%).
Average rainfall in October
Harlem, MT
- Average rainfall in October: 0.67"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are February, March and December (0.55").
Average rainfall days in October
Harlem, MT
- Average rainfall days in October: 7.5 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in October
Harlem, MT
- Average snowfall in October: 1.02"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Harlem, MT
- Average snowfall days in October: 2.3 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Harlem, 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 24min).
- 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 12min).
Average sunshine days in October
Harlem, MT
- Average sunshine days in October: 20.3 days
The month with the most sunshine days is July (21.6 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in October
Harlem, MT
- Average UV index in October: 2
The months with the highest UV index are June and 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
Harlem, MT
- Average cloud cover in October: 29
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in October
Harlem, 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).
