Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Martinsville, Indiana, observes a small decrease in the average high-temperature with the arrival of September, falling from August's 81.9°F (27.7°C) to a still moderately hot 76.1°F (24.5°C). September is noted for a mean low-temperature of 58.1°F (14.5°C).Humidity
In September, the average relative humidity in Martinsville, Indiana, is 78%.Rainfall
The month with the least rainfall in Martinsville is September, when the rain falls for 12.4 days and typically collects 1.65" (42mm) of precipitation.Snowfall
In Martinsville, snow does not fall in May through September.Daylight
In September, the average length of the day in Martinsville is 12h and 26min.On the first day of the month, sunrise is at 7:14 am and sunset at 8:16 pm. On the last day of September, sunrise is at 7:41 am and sunset at 7:29 pm EDT.
Sunshine
The average sunshine in September in Martinsville is 8.2h.UV index
In Martinsville, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What is the temperature in September in Martinsville?
What is the average humidity in September in Martinsville?
What is the driest month in Martinsville?
How much does it rain in Martinsville in September?
When it does not snow in Martinsville?
Does it snow in Martinsville in September?
How many hours of daylight does Martinsville have in September?
When are sunrise and sunset in September in Martinsville?
How long on average sun shines in September in Martinsville?
What is the UV index intensity in September in Martinsville?
Average temperature in September
Martinsville, IN
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in September
Martinsville, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Martinsville, IN
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Martinsville, IN
- Average humidity in September: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Martinsville, IN
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Martinsville, IN
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in September
Martinsville, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Martinsville, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 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
Martinsville, IN
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Martinsville, IN
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in September
Martinsville, IN
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Martinsville, IN
- Average cloud cover in September: 34
The months with the most cloud cover are January and February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Martinsville, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are July, August and December (5mi).
Martinsville, Indiana, USA
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