October weather forecastGriggsville, IL
October
Weather in October
October, like September, in Griggsville, Illinois, is another enjoyable autumn month, with an average temperature fluctuating between 47.3°F (8.5°C) and 64.2°F (17.9°C).Temperature
The shift to October brings a decrease in the average high-temperature, falling from a warm 78.3°F (25.7°C) in September to a comfortable 64.2°F (17.9°C). Throughout October, Griggsville witnesses a nighttime temperature average of 47.3°F (8.5°C).Humidity
The least humid month is October, with an average relative humidity of 71%.Rainfall
In Griggsville, in October, it is raining for 10 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 128.8 rainfall days, and 18.35" (466mm) of precipitation is accumulated.Snowfall
In Griggsville, snow does not fall in May through October.Daylight
The average length of the day in October in Griggsville is 11h and 8min.On the first day of the month, sunrise is at 6:59 am and sunset at 6:44 pm. On the last day of October, sunrise is at 7:31 am and sunset at 6:01 pm CDT.
Sunshine
In Griggsville, the average sunshine in October is 5.8h.UV index
In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Take precautions - Protection against skin and eye damage is obliged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Griggsville, IL
- Average high temperature in October: 64.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in October: 47.3°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in October
Griggsville, IL
- Average pressure in October: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Griggsville, IL
- Average wind speed in October: 8.5mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in October
Griggsville, IL
- Average humidity in October: 71%
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Griggsville, IL
- Average rainfall in October: 1.5"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in October
Griggsville, IL
- Average rainfall days in October: 10 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in October
Griggsville, IL
- Average snowfall in October: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Griggsville, IL
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (6.3 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
Griggsville, IL
- Average daylight in October: 11h and 6min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in October: 5h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in October
Griggsville, IL
- Average sunshine days in October: 19.5 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in October
Griggsville, IL
- Average UV index in October: 3
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, November and December (UV index 2).
Average cloud cover in October
Griggsville, IL
- Average cloud cover in October: 34
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in October
Griggsville, 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).
