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
In Jefferson, the average high-temperature in October significantly decreases from a moderately hot 74.8°F (23.8°C) in September to a refreshing 59.9°F (15.5°C). An average minimum temperature of 43.9°F (6.6°C) is recorded during the month of October.Humidity
The least humid month is October, with an average relative humidity of 69%.Rainfall
In Jefferson, in October, during 9.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Jefferson, during the entire year, the rain falls for 125.7 days and collects up to 26.5" (673mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 38.1 snowfall days, and 15.31" (389mm) of snow is accumulated.Daylight
In Jefferson, the average length of the day in October is 11h and 4min.On the first day of the month, sunrise is at 7:15 am and sunset at 6:58 pm. On the last day of October, sunrise is at 7:49 am and sunset at 6:12 pm CDT.
Sunshine
In Jefferson, the average sunshine in October is 5.7h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In October, the average maximum UV index of 2 translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the least humid month?
What is the average humidity in October?
How much does it rain in October?
When does it start snowing?
How many hours of daylight does Jefferson have in October?
When is the sunrise / sunset in October in Jefferson?
How long on average sun shines in October?
What is the month with the lowest UV index?
What is the UV index intensity in October?
Average temperature in October
Jefferson, IA
- Average high temperature in October: 59.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in October: 43.9°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in October
Jefferson, IA
- Average pressure in October: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in October
Jefferson, IA
- Average wind speed in October: 9.6mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in October
Jefferson, IA
- Average humidity in October: 69%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in October
Jefferson, IA
- Average rainfall in October: 2.2"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in October
Jefferson, IA
- Average rainfall days in October: 9.5 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in October
Jefferson, IA
- Average snowfall in October: 0.12"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Jefferson, IA
- Average snowfall days in October: 0.6 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Jefferson, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in October: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in October
Jefferson, IA
- Average sunshine days in October: 19.2 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in October
Jefferson, IA
- 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, October, November and December (UV index 2).
Average cloud cover in October
Jefferson, IA
- Average cloud cover in October: 36
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in October
Jefferson, IA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Jefferson, Iowa, USA
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