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 decrease of average high-temperatures is mild in October, with a decline from a moderately hot 77.5°F (25.3°C) in September to a refreshing 63.5°F (17.5°C). In Helena, the October nights cool down to an average low of 46.4°F (8°C).Humidity
The months with the lowest humidity are October and November, with an average relative humidity of 70%.Rainfall
In Helena, in October, during 9.5 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, in Helena, there are 132.3 rainfall days, and 27.28" (693mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Helena. October is the first month it typically snows in Helena. Throughout October, in the average 0.5 snowfall days, it receives 0.71" (18mm) of snow. In Helena, during the entire year, snow falls for 25.5 days and aggregates up to 10.91" (277mm) of snow.Daylight
In October, the average length of the day is 11h and 8min.On the first day of October, sunrise is at 7:15 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 6:17 pm CDT.
Sunshine
The average sunshine in October is 6.1h.UV index
In Helena, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. 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 is the average October temperature in Helena?
What are the least humid months in Helena?
What is the average humidity in October in Helena?
How much does it rain in Helena in October?
When does it start snowing in Helena?
What is the average length of the day in October in Helena?
What time are sunrise and sunset in October in Helena?
How many hours of sunshine does Helena have in October?
What is the UV index reading in October in Helena?
Average temperature in October
Helena, MO
- Average high temperature in October: 63.5°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in October: 46.4°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in October
Helena, MO
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in October
Helena, MO
- Average wind speed in October: 8.7mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in October
Helena, MO
- Average humidity in October: 70%
The month with the highest relative humidity is June (79%).
The months with the lowest relative humidity are October and November (70%).
Average rainfall in October
Helena, MO
- Average rainfall in October: 2.05"
The wettest month (with the highest rainfall) is May (4.02").
The driest months (with the least rainfall) are January and February (0.94").
Average rainfall days in October
Helena, MO
- Average rainfall days in October: 9.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in October
Helena, MO
- Average snowfall in October: 0.71"
The month with the highest snowfall is January (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Helena, MO
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Helena, MO
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in October: 6h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in October
Helena, MO
- Average sunshine days in October: 19.6 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in October
Helena, MO
- Average UV index in October: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Helena, MO
- Average cloud cover in October: 32
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in October
Helena, MO
- 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).
Helena, Missouri, USA
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