October weather forecast
Grantfork, IL

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Weather in October

October, like September, in Grantfork, Illinois, is another refreshing autumn month, with an average temperature varying between 48.9°F (9.4°C) and 65.7°F (18.7°C).

Temperature

In October, the meteorological conditions alter, with the average high-temperature shifting from a warm 78.1°F (25.6°C) in September to an enjoyable 65.7°F (18.7°C). During the month of October, an average temperature of 48.9°F (9.4°C) is noted during the nights.

Humidity

The least humid month is October, with an average relative humidity of 71%.

Rainfall

In Grantfork, in October, during 7.3 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 110.6 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 15.9 snowfall days, and 2.32" (59mm) of snow is accumulated.

Daylight

In October, the average length of the day is 11h and 10min.
On the first day of October, sunrise is at 6:55 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:59 pm CDT.

Sunshine

In October, the average sunshine is 6.3h.

UV index

The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: In October, a daily UV index of 3 turns into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.

Frequently asked questions

What is the temperature in October?

In Grantfork, in October, the average high-temperature is 65.7°F (18.7°C), and the average low-temperature is 48.9°F (9.4°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 93.2°F (34°C).

What is the least humid month?

The least humid month is October, with an average relative humidity of 71%.

What is the average humidity in October?

The average relative humidity in October is 71%.

How much does it rain in October?

In Grantfork, in October, during 7.3 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

When does it start snowing?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Grantfork have in October?

In Grantfork, Illinois, the average day length in October is 11h and 10min.

What time are sunrise and sunset in October?

On the first day of October, sunrise is at 6:55 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:59 pm CDT.

How many hours of sunshine does Grantfork have in October?

The average sunshine duration in October is 6.3h.

What is the UV index reading in October?

In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Grantfork, IL

Average temperature in October - Grantfork, IL
  • Average high temperature in October: 65.7°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in October: 48.9°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 (23.7°F).

Average pressure in October
Grantfork, IL

Average pressure in October - Grantfork, IL
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in October
Grantfork, IL

Average wind speed in October - Grantfork, IL
  • Average wind speed in October: 8.2mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in October
Grantfork, IL

Average humidity in October - Grantfork, IL
  • Average humidity in October: 71%

The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in October
Grantfork, IL

Average rainfall in October - Grantfork, IL
  • Average rainfall in October: 1.02"

The wettest month (with the highest rainfall) is May (1.46").
The driest month (with the least rainfall) is February (0.55").

Average rainfall days in October
Grantfork, IL

Average rainfall days in October - Grantfork, IL
  • Average rainfall days in October: 7.3 days

The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are January and December (5.9 days).

Average snowfall in October
Grantfork, IL

Average snowfall in October - Grantfork, IL
  • Average snowfall in October: 0.04"

The month with the highest snowfall is December (0.94").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in October
Grantfork, IL

Average snowfall days in October - Grantfork, IL
  • Average snowfall days in October: 0.1 days

The months with the highest number of snowfall days are January and February (4.8 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
Grantfork, IL

Average daylight in October / Average sunshine in October - Grantfork, IL
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 6h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in October
Grantfork, IL

Average sunshine days in October - Grantfork, IL
  • Average sunshine days in October: 21.5 days

The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (14.5 days).

Average UV index in October
Grantfork, IL

Average UV index in October - Grantfork, IL
  • Average UV index in October: 3

The months with the highest UV index are May, 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
Grantfork, IL

Average cloud cover in October - Grantfork, IL
  • Average cloud cover in October: 32

The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July, August and September (Cloud cover 28).

Average visibility in October
Grantfork, IL

Average visibility in October - Grantfork, IL
  • 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).

Grantfork, Illinois, USA

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