Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October indicates a shift in the average high-temperature, from September's agreeable 72.5°F (22.5°C) to a refreshing 59.9°F (15.5°C). Throughout October, the temperature tends to fall to a consistent average low of 45.7°F (7.6°C).Humidity
In Chelmsford, the average relative humidity in October is 77%.Rainfall
In Chelmsford, in October, during 13.6 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Chelmsford, during the entire year, the rain falls for 145.9 days and collects up to 27.48" (698mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 32.6 snowfall days, and 21.61" (549mm) of snow is accumulated.Daylight
In Chelmsford, the average length of the day in October is 11h and 2min.On the first day of the month, sunrise is at 6:43 am and sunset at 6:26 pm. On the last day of October, sunrise is at 7:18 am and sunset at 5:39 pm EDT.
Sunshine
In Chelmsford, the average sunshine in October is 6h.UV index
In Chelmsford, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 3 during October, leads to the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What are October temperatures in Chelmsford?
What is the average humidity in October in Chelmsford?
How much does it rain in Chelmsford in October?
When does it start to snow in Chelmsford?
How many hours of daylight does Chelmsford have in October?
When are sunrise and sunset in October in Chelmsford?
How many hours of sunshine does Chelmsford have in October?
How high is the UV index in October in Chelmsford?
Average temperature in October
Chelmsford, MA
- Average high temperature in October: 59.9°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in October: 45.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in October
Chelmsford, MA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Chelmsford, MA
- Average wind speed in October: 7.1mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in October
Chelmsford, MA
- Average humidity in October: 77%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (70%).
Average rainfall in October
Chelmsford, MA
- Average rainfall in October: 2.76"
The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in October
Chelmsford, MA
- Average rainfall days in October: 13.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in October
Chelmsford, MA
- Average snowfall in October: 0.08"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Chelmsford, MA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Chelmsford, MA
- Average daylight in October: 11h and 0min
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 October: 6h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in October
Chelmsford, MA
- Average sunshine days in October: 14.8 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in October
Chelmsford, MA
- Average UV index in October: 3
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, November and December (UV index 2).
Average cloud cover in October
Chelmsford, MA
- Average cloud cover in October: 44
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in October
Chelmsford, MA
- Average visibility in October: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Chelmsford, Massachusetts, USA
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