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 brings a noticeable temperature shift, dropping from a pleasant 70.5°F (21.4°C) in September to a fresh 54.3°F (12.4°C). Throughout October, an average nighttime temperature of 38.8°F (3.8°C) is experienced.Humidity
The average relative humidity in October is 59%.Rainfall
In Saint Johns, in October, it is raining for 7.7 days, with typically 0.59" (15mm) of accumulated precipitation. In Saint Johns, during the entire year, the rain falls for 98.7 days and collects up to 8.23" (209mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In October, it is snowing for 1.9 days. Throughout October, 0.79" (20mm) of snow is accumulated. In Saint Johns, during the entire year, snow falls for 53.5 days and aggregates up to 14.25" (362mm) of snow.Daylight
In Saint Johns, the average length of the day in October is 10h and 47min.On the first day of the month, sunrise is at 7:20 am and sunset at 6:58 pm. On the last day of October, sunrise is at 8:06 am and sunset at 6:00 pm MDT.
Sunshine
In October, the average sunshine 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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during October leads to these advisories:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the average humidity in October?
How much does it rain in October?
How much does it snow in October?
How many hours of daylight does Saint Johns have in October?
What time are sunrise and sunset in October?
How long on average sun shines in October?
When is the lowest UV index?
What is the UV index reading in October?
Average temperature in October
Saint Johns, MT
- Average high temperature in October: 54.3°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (27.1°F).
- Average low temperature in October: 38.8°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in October
Saint Johns, MT
- Average pressure in October: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in October
Saint Johns, MT
- Average wind speed in October: 10.1mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in October
Saint Johns, MT
- Average humidity in October: 59%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).
Average rainfall in October
Saint Johns, MT
- Average rainfall in October: 0.59"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").
Average rainfall days in October
Saint Johns, MT
- Average rainfall days in October: 7.7 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).
Average snowfall in October
Saint Johns, MT
- Average snowfall in October: 0.79"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Saint Johns, MT
- Average snowfall days in October: 1.9 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Saint Johns, MT
- Average daylight in October: 10h and 5min
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 18min).
- Average sunshine in October: 6h and 4min
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 18min).
Average sunshine days in October
Saint Johns, MT
- Average sunshine days in October: 19.7 days
The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in October
Saint Johns, 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, October, November and December (UV index 2).
Average cloud cover in October
Saint Johns, MT
- Average cloud cover in October: 29
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in October
Saint Johns, 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).
Saint Johns, Montana, USA
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