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 brings a decrease in the average high-temperature, falling from September's moderately hot 75.2°F (24°C) to a comfortable 61.3°F (16.3°C). Harper sees an average low-temperature of 44.8°F (7.1°C) during October.Humidity
The least humid month is October, with an average relative humidity of 72%.Rainfall
In Harper, in October, it is raining for 11.3 days, with typically 2.2" (56mm) of accumulated precipitation. In Harper, Iowa, during the entire year, the rain falls for 137.9 days and collects up to 27.76" (705mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.47" (12mm) of snow. Throughout the year, there are 32.8 snowfall days, and 12.56" (319mm) of snow is accumulated.Daylight
In Harper, the average length of the day in October is 11h and 5min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:49 pm. On the last day of October, sunrise is at 7:39 am and sunset at 6:04 pm CDT.
Sunshine
In October, the average sunshine is 5.6h.UV index
The months with the lowest UV index in Harper 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 exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 during October translates into the following guidance:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
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 Harper have in October?
When is the sunrise / 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 in Harper?
Average temperature in October
Harper, IA
- Average high temperature in October: 61.3°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in October: 44.8°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in October
Harper, IA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in October
Harper, IA
- Average wind speed in October: 9.6mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in October
Harper, IA
- Average humidity in October: 72%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
Harper, IA
- Average rainfall in October: 2.2"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in October
Harper, IA
- Average rainfall days in October: 11.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in October
Harper, IA
- Average snowfall in October: 0.47"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Harper, IA
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Harper, 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 12min).
- Average sunshine in October: 5h and 4min
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 12min).
Average sunshine days in October
Harper, IA
- Average sunshine days in October: 17.9 days
The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in October
Harper, 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
Harper, IA
- Average cloud cover in October: 37
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in October
Harper, IA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Harper, Iowa, USA
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