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 is characterized by a slight reduction in average high-temperature, easing from a moderately hot 77.7°F (25.4°C) in August to an agreeable 70.2°F (21.2°C). Throughout the month of September, the average temperature dips to a fresh 50.9°F (10.5°C) at night.Humidity
The average relative humidity in September in Colrain is 79%.Rainfall
September is the month with the least rainfall in Colrain. Rain falls for 12.1 days and accumulates 2.17" (55mm) of precipitation.Snowfall
In Colrain, snow does not fall in June through September.Daylight
In Colrain, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:16 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:33 pm EDT.
Sunshine
In Colrain, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Colrain is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What is the temperature in September in Colrain?
What is the average humidity in September in Colrain?
What is the driest month in Colrain?
How much does it rain in Colrain in September?
When it does not snow in Colrain?
Does it snow in Colrain in September?
What is the average length of the day in September in Colrain?
When are sunrise and sunset in September in Colrain?
How long on average sun shines in September in Colrain?
What is the UV index reading in September in Colrain?
Average temperature in September
Colrain, MA
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in September
Colrain, 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
Colrain, MA
- Average wind speed in September: 5.6mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Colrain, MA
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Colrain, MA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Colrain, MA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in September
Colrain, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Colrain, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Colrain, MA
- Average daylight in September: 12h and 3min
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 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Colrain, MA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in September
Colrain, MA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Colrain, MA
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Colrain, MA
- 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).
Colrain, Massachusetts, USA
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