September weather forecastPost Oak, MO
September
Weather in September
September, the first month of the autumn in Post Oak, is still a warm month, with temperature in the range of an average low of 59.7°F (15.4°C) and an average high of 78.8°F (26°C).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's 84.7°F (29.3°C) to a still moderately hot 78.8°F (26°C). Post Oak sees an average low-temperature of 59.7°F (15.4°C) during September.Humidity
The average relative humidity in September is 75%.Rainfall
In Post Oak, during September, the rain falls for 10.7 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Post Oak, during the entire year, the rain falls for 130 days and collects up to 21.81" (554mm) of precipitation.Snowfall
In Post Oak, snow does not fall in June through October.Daylight
In Post Oak, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:44 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:58 pm CDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Post Oak, MO
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in September
Post Oak, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Post Oak, MO
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Post Oak, MO
- Average humidity in September: 75%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Post Oak, MO
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Post Oak, MO
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in September
Post Oak, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Post Oak, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Post Oak, 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 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Post Oak, MO
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in September
Post Oak, 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
Post Oak, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in September
Post Oak, 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).
