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
October's arrival signals a significant decrease in average high-temperatures, falling from September's pleasant 68.5°F (20.3°C) to a fresh 51.8°F (11°C). Perma's nighttime temperature in October falls to an average of 32.7°F (0.4°C).Humidity
The average relative humidity in October in Perma, Montana, is 71%.Rainfall
In Perma, in October, it is raining for 11.5 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 129.9 rainfall days, and 13.5" (343mm) of precipitation is accumulated.Snowfall
Months with snowfall in Perma are January through May, September through December. In Perma, during October, snow falls for 2 days and regularly aggregates up to 0.94" (24mm) of snow. In Perma, Montana, during the entire year, snow falls for 67.1 days and aggregates up to 28.27" (718mm) of snow.Daylight
In Perma, the average length of the day in October is 10h and 50min.On the first day of October, sunrise is at 7:38 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 8:21 am and sunset at 6:22 pm MDT.
Sunshine
In October, the average sunshine is 7h.UV index
The average daily maximum UV index in October in Perma is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during October translates into these guidelines:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average October temperature in Perma?
What is the average humidity in October in Perma?
How many days does it rain in October in Perma?
How much does it snow in Perma in October?
What is the average length of the day in October in Perma?
What time are sunrise and sunset in October in Perma?
How long on average sun shines in October in Perma?
What is the UV index reading in October in Perma?
Average temperature in October
Perma, MT
- Average high temperature in October: 51.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in October: 32.7°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).
Average pressure in October
Perma, MT
- Average pressure in October: 30.05"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Perma, MT
- Average wind speed in October: 4.1mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest months (with the lowest average wind speed) are January, August and December (3.9mph).
Average humidity in October
Perma, MT
- Average humidity in October: 71%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (49%).
Average rainfall in October
Perma, MT
- Average rainfall in October: 1.14"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in October
Perma, MT
- Average rainfall days in October: 11.5 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is August (7.4 days).
Average snowfall in October
Perma, MT
- Average snowfall in October: 0.94"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Perma, MT
- Average snowfall days in October: 2 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Perma, MT
- Average daylight in October: 10h and 5min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in October: 7h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in October
Perma, MT
- Average sunshine days in October: 17.4 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (11 days).
Average UV index in October
Perma, 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 February and December (UV index 1).
Average cloud cover in October
Perma, MT
- Average cloud cover in October: 33
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in October
Perma, MT
- Average visibility in October: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Perma, Montana, USA
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