September weather forecastCaldwell, OH
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Caldwell, Ohio, with an average temperature fluctuating between 56.3°F (13.5°C) and 77.2°F (25.1°C).Temperature
With the arrival of September, Caldwell experiences a modest decline in average high-temperatures, transitioning from 83.5°F (28.6°C) in August to a still warm 77.2°F (25.1°C). Caldwell usually reports an average low-temperature of 56.3°F (13.5°C) during the month of September.Humidity
The average relative humidity in September is 77%.Rainfall
In Caldwell, in September, during 11.9 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 144.7 rainfall days, and 17.44" (443mm) of precipitation is accumulated.Snowfall
In Caldwell, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:56 pm. On the last day of September, in Caldwell, Ohio, sunrise is at 7:22 am and sunset at 7:09 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Caldwell, OH
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in September
Caldwell, OH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Caldwell, OH
- Average wind speed in September: 4.9mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Caldwell, OH
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall in September
Caldwell, OH
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in September
Caldwell, OH
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Caldwell, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Caldwell, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Caldwell, OH
- 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 24min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Caldwell, OH
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Caldwell, OH
- 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, November and December (UV index 2).
Average cloud cover in September
Caldwell, OH
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Caldwell, 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, February, March, May, June, July, August, September, October and December (5mi).
