September weather forecastJefferson City, MO
September
Weather in September
September whispers the enchanting tales of autumn into the Jefferson City canvas. The weather carries a whiff of a blend - the remnants of summer with the hints of oncoming fall. Favorable weather conditions present themselves with average temperatures going down to 59.2°F (15.1°C) from 65.8°F (18.8°C) in August. The daylight hours reduce, prompting the advent of stunning autumnal hues. Jefferson City embraces September as a spellbinding transitional interlude between summer and autumn.Temperature
As August makes way for September, Jefferson City's average high-temperature eases from a hot 87.4°F (30.8°C) to a moderately hot 80.1°F (26.7°C). The average low-temperature of 59.2°F (15.1°C) is witnessed during September.Humidity
The average relative humidity in September in Jefferson City, Missouri, is 73%.Rainfall
In Jefferson City, in September, it is raining for 7 days, with typically 0.55" (14mm) of accumulated precipitation. In Jefferson City, Missouri, during the entire year, the rain falls for 93.7 days and collects up to 9.29" (236mm) of precipitation.Snowfall
In Jefferson City, snow does not fall in April through October.Daylight
In Jefferson City, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:38 pm. On the last day of September, in Jefferson City, sunrise is at 7:04 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jefferson City, MO
- Average high temperature in September: 80.1°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Jefferson City, MO
- Average pressure in September: 30.02"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 September
Jefferson City, MO
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in September
Jefferson City, MO
- Average humidity in September: 73%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Jefferson City, MO
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is May (1.3").
The driest month (with the least rainfall) is November (0.47").
Average rainfall days in September
Jefferson City, MO
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is January (4 days).
Average snowfall in September
Jefferson City, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Jefferson City, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.2 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
Jefferson City, MO
- Average daylight in September: 12h and 24min
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 September: 9h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Jefferson City, MO
- Average sunshine days in September: 20.7 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (16.7 days).
Average UV index in September
Jefferson City, MO
- 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
Jefferson City, MO
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in September
Jefferson City, MO
- 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).
