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 signals a clear decrease in the average high-temperature, dropping from September's warm 76.6°F (24.8°C) to an enjoyable 61.5°F (16.4°C). Henderson observes an average nighttime low-temperature of 45°F (7.2°C) during the month of October.Humidity
October is the least humid month, with an average relative humidity of 68%.Rainfall
In October, the rain falls for 8.7 days. Throughout October, 1.57" (40mm) of precipitation is accumulated. In Henderson, during the entire year, the rain falls for 117.2 days and collects up to 21.77" (553mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.7 snowfall days, it receives 0.24" (6mm) of snow. Throughout the year, there are 26.7 snowfall days, and 9.76" (248mm) of snow is accumulated.Daylight
In October, the average length of the day in Henderson is 11h and 5min.On the first day of the month, sunrise is at 7:19 am and sunset at 7:03 pm. On the last day of October, sunrise is at 7:52 am and sunset at 6:18 pm CDT.
Sunshine
The average sunshine in October is 6h.UV index
The months with the lowest UV index in Henderson 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 vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 2 in October, converts into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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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?
What is the average length of the day in October?
When are sunrise and sunset in October?
How long on average sun shines in October?
What is the month with the lowest UV index?
How high is the UV index in October?
Average temperature in October
Henderson, IA
- Average high temperature in October: 61.5°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in October: 45°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in October
Henderson, IA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in October
Henderson, IA
- Average wind speed in October: 9.3mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in October
Henderson, IA
- Average humidity in October: 68%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (68%).
Average rainfall in October
Henderson, IA
- Average rainfall in October: 1.57"
The wettest month (with the highest rainfall) is June (4.06").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in October
Henderson, IA
- Average rainfall days in October: 8.7 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in October
Henderson, IA
- Average snowfall in October: 0.24"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Henderson, IA
- Average snowfall days in October: 0.7 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Henderson, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 6h and 0min
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 36min).
Average sunshine days in October
Henderson, IA
- Average sunshine days in October: 20 days
The month with the most sunshine days is December (23.1 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in October
Henderson, IA
- Average UV index in October: 2
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, October, November and December (UV index 2).
Average cloud cover in October
Henderson, IA
- Average cloud cover in October: 34
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in October
Henderson, IA
- 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).
Henderson, Iowa, USA
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