September weather forecastGilsum, NH
September
Weather in September
September, the first month of the autumn in Gilsum, is also an agreeable month, with an average temperature varying between 50.9°F (10.5°C) and 70°F (21.1°C).Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's warm 78.1°F (25.6°C) to a pleasant 70°F (21.1°C). Gilsum encounters a steady low-temperature average of 50.9°F (10.5°C) throughout the month of September.Humidity
The average relative humidity in September in Gilsum is 79%.Rainfall
In Gilsum, in September, during 9.3 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, in Gilsum, there are 125.1 rainfall days, and 11.69" (297mm) of precipitation is accumulated.Snowfall
In Gilsum, snow does not fall in June through September.Daylight
In Gilsum, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:14 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:31 pm EDT.
Sunshine
In Gilsum, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the UV index of 4 transforms into the following advice:
Be vigilant - Suggestions to stave off sun damage are provided. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gilsum, NH
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Gilsum, NH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Gilsum, NH
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are January, February and March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Gilsum, NH
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Gilsum, NH
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.75").
Average rainfall days in September
Gilsum, NH
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Gilsum, NH
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Gilsum, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gilsum, NH
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Gilsum, NH
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in September
Gilsum, NH
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Gilsum, NH
- Average cloud cover in September: 38
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Gilsum, NH
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
