September weather forecastSan Pierre, IN
September
Weather in September
September, the first month of the autumn in San Pierre, is still a warm month, with an average temperature fluctuating between 73.9°F (23.3°C) and 56.7°F (13.7°C).Temperature
Transitioning from August to September, San Pierre observes an average high-temperature of a still warm 73.9°F (23.3°C), differing subtly from the previous month. During September, San Pierre sees a mean low-temperature of 56.7°F (13.7°C).Humidity
The average relative humidity in September is 79%.Rainfall
In San Pierre, in September, during 12.5 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In San Pierre, during the entire year, the rain falls for 156.1 days and collects up to 22.44" (570mm) of precipitation.Snowfall
In San Pierre, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:30 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
San Pierre, IN
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
San Pierre, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
San Pierre, IN
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
San Pierre, IN
- Average humidity in September: 79%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
San Pierre, IN
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
San Pierre, IN
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
San Pierre, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
San Pierre, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
San Pierre, IN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 24min
The months with the most sunshine are June and July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
San Pierre, IN
- Average sunshine days in September: 15 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
San Pierre, IN
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
San Pierre, IN
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
San Pierre, IN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
