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
September signals a slight drop in average high-temperature, sliding from August's moderately hot 79.3°F (26.3°C) to a pleasant 72°F (22.2°C). In September, in Hatfield, the average low-temperature is a fresh 52.7°F (11.5°C).Humidity
In Hatfield, the average relative humidity in September is 78%.Rainfall
In Hatfield, in September, it is raining for 10.3 days, with typically 0.98" (25mm) of accumulated precipitation. In Hatfield, during the entire year, the rain falls for 134.1 days and collects up to 14.84" (377mm) of precipitation.Snowfall
In Hatfield, snow does not fall in June through October.Daylight
In Hatfield, Massachusetts, the average length of the day in September is 12h and 28min.On the first day of September in Hatfield, sunrise is at 6:16 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:33 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Hatfield, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What are the temperatures in Hatfield in September?
What is the average humidity in September in Hatfield?
How much does it rain in Hatfield in September?
When it does not snow in Hatfield?
What is the average length of the day in September in Hatfield?
What time are sunrise and sunset in September in Hatfield?
How many hours of sunshine does Hatfield have in September?
How high is the UV index in September in Hatfield?
Average temperature in September
Hatfield, MA
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Hatfield, MA
- Average pressure in September: 30.06"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
Hatfield, MA
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January, February and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Hatfield, MA
- Average humidity in September: 78%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Hatfield, MA
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is October (1.61").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in September
Hatfield, MA
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Hatfield, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Hatfield, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hatfield, MA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Hatfield, MA
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in September
Hatfield, MA
- 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, March, October, November and December (UV index 2).
Average cloud cover in September
Hatfield, MA
- Average cloud cover in September: 37
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Hatfield, MA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Hatfield, Massachusetts, USA
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