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
September's arrival subtly correlates with a reduction in the average high-temperature, down from 83.7°F (28.7°C) in August to a still warm 77.9°F (25.5°C). The average low-temperature of 58.1°F (14.5°C) is witnessed in Lima during September.Humidity
The average relative humidity in September is 74%.Rainfall
In Lima, in September, it is raining for 11.2 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, in Lima, there are 137.5 rainfall days, and 27.68" (703mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Lima.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:48 pm CDT.
Sunshine
In Lima, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 in September translates into this advice:
Undertake precautions - Guarding against sun damage is counselled. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What are the temperatures in Lima in September?
What is the average humidity in September in Lima?
How many days does it rain in September in Lima?
When it does not snow in Lima?
Does it snow in Lima in September?
What is the average length of the day in September in Lima?
When is the sunrise / sunset in September in Lima?
How many hours of sunshine does Lima have in September?
What is the UV index intensity in September in Lima?
Average temperature in September
Lima, IL
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Lima, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Lima, IL
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January and February (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Lima, IL
- Average humidity in September: 74%
The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Lima, IL
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
Lima, IL
- Average rainfall days in September: 11.2 days
The months with the highest number of rainy days are May and June (17.3 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in September
Lima, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lima, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.3 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
Lima, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Lima, IL
- Average sunshine days in September: 17 days
The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Lima, IL
- Average UV index in September: 5
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 September
Lima, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Lima, IL
- Average visibility in September: 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).
Lima, Illinois, USA
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