September weather forecastJameson, MO
September
Weather in September
September, the first month of the autumn in Jameson, is still a warm month, with an average temperature varying between 77.5°F (25.3°C) and 57.7°F (14.3°C).Temperature
September heralds a minor drop in average high-temperature, sliding from August's warm 83.5°F (28.6°C) to a still moderately hot 77.5°F (25.3°C). Throughout the nights in September, an average low-temperature of 57.7°F (14.3°C) is noted in Jameson.Humidity
The average relative humidity in September is 76%.Rainfall
In Jameson, in September, during 11.6 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, in Jameson, Missouri, there are 129.6 rainfall days, and 26.02" (661mm) of precipitation is accumulated.Snowfall
In Jameson, Missouri, snow does not fall in June through September.Daylight
In Jameson, Missouri, the average length of the day in September is 12h and 26min.On the first day of September in Jameson, sunrise is at 6:44 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:59 pm CDT.
Sunshine
The average sunshine in September in Jameson is 9.2h.UV index
In September, the average daily maximum UV index in Jameson is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 5 transforms into the following advice:
Undertake precautions - It is suggested to shield oneself from sunburn. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jameson, MO
- Average high temperature in September: 77.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Jameson, MO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Jameson, MO
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Jameson, MO
- Average humidity in September: 76%
The months with the highest relative humidity are May, June and July (80%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in September
Jameson, MO
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in September
Jameson, MO
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in September
Jameson, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Jameson, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jameson, MO
- Average daylight in September: 12h and 24min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Jameson, MO
- Average sunshine days in September: 17 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Jameson, 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
Jameson, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Jameson, 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).





