September weather forecastCalcutta, OH
September
Weather in September
The first month of the autumn, September, is still a warm month in Calcutta, Ohio, with an average temperature fluctuating between 54.9°F (12.7°C) and 74.8°F (23.8°C).Temperature
September signals a slight drop in average high-temperature, sliding from August's 81.9°F (27.7°C) to a still moderately hot 74.8°F (23.8°C). In Calcutta, September nights cool down to an average of 54.9°F (12.7°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Calcutta, during September, the rain falls for 14.2 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, there are 161.5 rainfall days, and 22.72" (577mm) of precipitation is accumulated.Snowfall
In Calcutta, snow does not fall in June through September.Daylight
In Calcutta, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:50 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:05 pm EDT.
Sunshine
In Calcutta, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Calcutta is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during September leads to these advisories:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Calcutta, OH
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Calcutta, OH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Calcutta, OH
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Calcutta, OH
- Average humidity in September: 79%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in September
Calcutta, OH
- Average rainfall in September: 1.77"
The wettest months (with the highest rainfall) are April and May (2.24").
The driest month (with the least rainfall) is November (1.54").
Average rainfall days in September
Calcutta, OH
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in September
Calcutta, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Calcutta, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Calcutta, OH
- Average daylight in September: 12h and 30min
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 18min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Calcutta, OH
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in September
Calcutta, OH
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Calcutta, OH
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Calcutta, OH
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).
