October weather forecast
Harlan, IA

Weather in October

October, the same as September, in Harlan, Iowa, is another mild autumn month, with average temperature ranging between min 44.1°F (6.7°C) and max 59.7°F (15.4°C).

Temperature

In October, the average high-temperature plummets, from a moderately hot 75°F (23.9°C) in September, to a mild 59.7°F (15.4°C). In Harlan, the average low-temperature is 44.1°F (6.7°C).

Humidity

The least humid month in Harlan is October, with an average relative humidity of 68%.

Rainfall

In October, in Harlan, Iowa, the rain falls for 8.5 days. Throughout October, 1.06" (27mm) of precipitation is accumulated. In Harlan, during the entire year, the rain falls for 113.5 days and collects up to 15.71" (399mm) 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 0.7 snowfall days, it receives 0.24" (6mm) of snow. Throughout the year, there are 31.5 snowfall days, and 7.13" (181mm) of snow is accumulated.

Daylight

In Harlan, the average length of the day is 11.1h.

Sunshine

The average sunshine in October is 5.9h.

UV index

Months with the lowest UV index in Harlan are January, February, 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 unsafe exposure to the UV radiation for the ordinary person.
Note: In October, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the least humid month in Harlan?

October is the least humid month, with an average relative humidity of 68%.

What is the average humidity in October in Harlan?

The average relative humidity in October is 68%.

How much does it rain in Harlan in October?

In Harlan, in October, during 8.5 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

When does it start to snow in Harlan?

October is the first month it typically snows. Throughout October, in the average 0.7 snowfall days, it receives 0.24" (6mm) of snow.

What is the average length of the day in October in Harlan?

In October, the average length of the day in Harlan, Iowa, is 11.1h.

How many hours of sunshine does Harlan have in October?

In October, the average sunshine in Harlan, Iowa, is 5.9h.

What are the months with the lowest UV index in Harlan?

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Harlan, Iowa.

How high is the UV index in October in Harlan?

The average daily maximum UV index in October in Harlan is 2. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.

Average temperature in October
Harlan, IA

Average temperature in October - Harlan, IA
  • Average high temperature in October: 59.7°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in October: 44.1°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

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Average pressure in October
Harlan, IA

Average pressure in October - Harlan, IA
  • Average pressure in October: 30"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in October
Harlan, IA

Average wind speed in October - Harlan, IA
  • Average wind speed in October: 9.7mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

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Average humidity in October
Harlan, IA

Average humidity in October - Harlan, IA
  • Average humidity in October: 68%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in October
Harlan, IA

Average rainfall in October - Harlan, IA
  • Average rainfall in October: 1.06"

The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in October
Harlan, IA

Average rainfall days in October - Harlan, IA
  • Average rainfall days in October: 8.5 days

The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in October
Harlan, IA

Average snowfall in October - Harlan, IA
  • Average snowfall in October: 0.24"

The month with the highest snowfall is February (2.09").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Harlan, IA

Average snowfall days in October - Harlan, IA
  • Average snowfall days in October: 0.7 days

The month with the highest number of snowfall days is January (8.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Harlan, IA

Average daylight in October / Average sunshine in October - Harlan, IA
  • Average daylight in October: 11.1h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in October: 5.9h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.5h).

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Average sunshine days in October
Harlan, IA

Average sunshine days in October - Harlan, IA
  • Average sunshine days in October: 20.5 days

The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (11.4 days).

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Average UV index in October
Harlan, IA

Average UV index in October - Harlan, IA
  • Average UV index in October: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in October
Harlan, IA

Average cloud cover in October - Harlan, IA
  • Average cloud cover in October: 35

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in October
Harlan, IA

Average visibility in October - Harlan, IA
  • Average visibility in October: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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