Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Franklin Grove's shift into September is marked by a subtle change to a still warm 73.8°F (23.2°C) from August's 78.6°F (25.9°C) in temperature. The average nighttime temperature lowers to a cool 55.2°F (12.9°C) throughout September.Humidity
In September, the average relative humidity in Franklin Grove is 79%.Rainfall
In Franklin Grove, during September, the rain falls for 10.5 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Franklin Grove, during the entire year, the rain falls for 129.4 days and collects up to 16.65" (423mm) of precipitation.Snowfall
May through September are months without snowfall in Franklin Grove.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September in Franklin Grove, sunrise is at 6:23 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What is the usual temperature for Franklin Grove in September?
What is the average humidity in September in Franklin Grove?
How many days does it rain in September in Franklin Grove?
When it does not snow in Franklin Grove?
Does it snow in Franklin Grove in September?
How many hours of daylight does Franklin Grove have in September?
When are sunrise and sunset in September in Franklin Grove?
How many hours of sunshine does Franklin Grove have in September?
What is the UV index reading in September in Franklin Grove?
Average temperature in September
Franklin Grove, IL
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Franklin Grove, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Franklin Grove, IL
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Franklin Grove, IL
- Average humidity in September: 79%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Franklin Grove, IL
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in September
Franklin Grove, IL
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in September
Franklin Grove, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Franklin Grove, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Franklin Grove, IL
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Franklin Grove, IL
- Average sunshine days in September: 18.3 days
The months with the most sunshine days are November and December (18.8 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in September
Franklin Grove, IL
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Franklin Grove, IL
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Franklin Grove, IL
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Franklin Grove, Illinois, USA
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