September weather forecastMartinsville, MO
September
Weather in September
September, the first month of the autumn in Martinsville, is also a moderately hot month, with an average temperature ranging between min 57.4°F (14.1°C) and max 76.8°F (24.9°C).Temperature
In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 82.4°F (28°C) in August to a still warm 76.8°F (24.9°C). In Martinsville, an average nighttime temperature of 57.4°F (14.1°C) is expected during September.Humidity
The average relative humidity in September is 76%.Rainfall
In Martinsville, during September, the rain falls for 11.3 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Martinsville, during the entire year, the rain falls for 129.2 days and collects up to 25.35" (644mm) of precipitation.Snowfall
In Martinsville, snow does not fall in June through September.Daylight
In Martinsville, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:59 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Martinsville, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 5 in September leads to these recommendations:
Take precautions - Protection against sun damage is advised. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Martinsville, MO
- Average high temperature in September: 76.8°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: 57.4°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
Martinsville, 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 (29.88"Hg).
Average wind speed in September
Martinsville, MO
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is March (10mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Martinsville, MO
- Average humidity in September: 76%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Martinsville, MO
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are January and February (0.91").
Average rainfall days in September
Martinsville, MO
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Martinsville, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Martinsville, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Martinsville, 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 18min
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 36min).
Average sunshine days in September
Martinsville, MO
- Average sunshine days in September: 17 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Martinsville, 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
Martinsville, MO
- Average cloud cover in September: 29
The months with the most cloud cover are January and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Martinsville, 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).
