September weather forecastTroy, MO
September
Weather in September
September, the first month of the autumn in Troy, is also a moderately hot month, with an average temperature fluctuating between 59°F (15°C) and 79.2°F (26.2°C).Temperature
Troy records a mild change in average high-temperature during September, easing from 85.3°F (29.6°C) in August to a still moderately hot 79.2°F (26.2°C). Troy records a consistent low-temperature of 59°F (15°C) during September nights.Humidity
In September, the average relative humidity in Troy is 74%.Rainfall
In September, the rain falls for 11.4 days. Throughout September, 2.17" (55mm) of precipitation is accumulated. In Troy, during the entire year, the rain falls for 142.7 days and collects up to 29.25" (743mm) of precipitation.Snowfall
April through October are months without snowfall.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 7:33 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:47 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Troy, MO
- Average high temperature in September: 79.2°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 (36.3°F).
- Average low temperature in September: 59°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in September
Troy, 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 (29.91"Hg).
Average wind speed in September
Troy, MO
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Troy, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Troy, MO
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in September
Troy, MO
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Troy, MO
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (2.68").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Troy, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.2 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
Troy, MO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Troy, MO
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
Troy, 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
Troy, MO
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 30).
Average visibility in September
Troy, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
