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
The advent of September brings a slight shift in average high-temperature, moving from a moderately hot 77.7°F (25.4°C) in August to an agreeable 71.4°F (21.9°C). In Middletown, the expected average low-temperature for September is a moderate 59.7°F (15.4°C).Humidity
In Middletown, the average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 11.6 days and accumulates 1.42" (36mm) of precipitation.Snowfall
April, June through October are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:12 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:28 pm EDT.
Sunshine
In Middletown, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Middletown?
What is the average humidity in September in Middletown?
What is the driest month in Middletown?
How much does it rain in Middletown in September?
When it does not snow in Middletown?
What is the average length of the day in September in Middletown?
When is the sunrise / sunset in September in Middletown?
How long on average sun shines in September in Middletown?
What is the UV index reading in September in Middletown?
Average temperature in September
Middletown, RI
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in September: 59.7°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 (26.4°F).
Average pressure in September
Middletown, RI
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Middletown, RI
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in September
Middletown, RI
- Average humidity in September: 78%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is March (73%).
Average rainfall in September
Middletown, RI
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
Middletown, RI
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is April (15.6 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Middletown, RI
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in September
Middletown, RI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Middletown, RI
- Average daylight in September: 12h and 3min
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 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Middletown, RI
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in September
Middletown, RI
- Average UV index in September: 4
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, March and December (UV index 2).
Average cloud cover in September
Middletown, RI
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Middletown, RI
- 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).
Middletown, Rhode Island, USA
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