Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
The transition from September to October brings a clear temperature drop, with average high-temperatures decreasing from a refreshing 65.5°F (18.6°C) to a chilly 48.4°F (9.1°C). Throughout the nights in October, an average low-temperature of 30.7°F (-0.7°C) is noted in Halfmoon.Humidity
In October, the average relative humidity is 75%.Rainfall
In Halfmoon, in October, it is raining for 11.5 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, there are 126.4 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Halfmoon, in October, snow falls for 3.5 days, with typically accumulated 0.94" (24mm) of snow. In Halfmoon, during the entire year, snow falls for 97 days and aggregates up to 33.86" (860mm) of snow.Daylight
In Halfmoon, the average length of the day in October is 10h and 48min.On the first day of October, sunrise is at 7:37 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 8:22 am and sunset at 6:18 pm MDT.
Sunshine
The average sunshine in October is 6.7h.UV index
The average daily maximum UV index in October in Halfmoon is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in October interprets into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the average humidity in October?
How many days does it rain in October?
How many days does it snow in October?
How many hours of daylight does Halfmoon have in October?
When are sunrise and sunset in October?
How many hours of sunshine does Halfmoon have in October?
What is the UV index reading in October?
Average temperature in October
Halfmoon, MT
- Average high temperature in October: 48.4°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in October: 30.7°F
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in October
Halfmoon, MT
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Halfmoon, MT
- Average wind speed in October: 4mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity in October
Halfmoon, MT
- Average humidity in October: 75%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in October
Halfmoon, MT
- Average rainfall in October: 0.91"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in October
Halfmoon, MT
- Average rainfall days in October: 11.5 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in October
Halfmoon, MT
- Average snowfall in October: 0.94"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Halfmoon, MT
- Average snowfall days in October: 3.5 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in October /
Average sunshine in October
Halfmoon, MT
- Average daylight in October: 10h and 5min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in October: 6h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in October
Halfmoon, MT
- Average sunshine days in October: 15.5 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in October
Halfmoon, 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, November and December (UV index 1).
Average cloud cover in October
Halfmoon, MT
- Average cloud cover in October: 37
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in October
Halfmoon, MT
- Average visibility in October: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Halfmoon, Montana, USA
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