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
Merrimac's October weather shows a moderate shift in high-temperatures, falling from September's agreeable 72.3°F (22.4°C) to a mild 59.9°F (15.5°C). October nights are marked by an average low-temperature of 46.6°F (8.1°C).Humidity
In October, the average relative humidity is 77%.Rainfall
In Merrimac, Massachusetts, in October, during 6.5 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 78.3 rainfall days, and 5.43" (138mm) of precipitation is accumulated.Snowfall
In Merrimac, Massachusetts, snow does not fall in June through October.Daylight
In October, the average length of the day is 11h and 2min.On the first day of October, sunrise is at 6:42 am and sunset at 6:24 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:37 pm EDT.
Sunshine
In October, the average sunshine is 6h.UV index
In Merrimac, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 3 in October translates into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the average humidity in October?
How much does it rain in October?
When it does not snow?
Does it snow in Merrimac in October?
What is the average length of the day in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Merrimac have in October?
How high is the UV index in October?
Average temperature in October
Merrimac, MA
- Average high temperature in October: 59.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in October: 46.6°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in October
Merrimac, MA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Merrimac, MA
- Average wind speed in October: 7.6mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in October
Merrimac, MA
- Average humidity in October: 77%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall in October
Merrimac, MA
- Average rainfall in October: 0.59"
The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in October
Merrimac, MA
- Average rainfall days in October: 6.5 days
The month with the highest number of rainy days is July (8.8 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in October
Merrimac, MA
- Average snowfall in October: 0"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in October
Merrimac, MA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Merrimac, 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
Merrimac, MA
- Average sunshine days in October: 21.7 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (18.4 days).
Average UV index in October
Merrimac, 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
Merrimac, MA
- Average cloud cover in October: 43
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in October
Merrimac, MA
- Average visibility in October: 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).
Merrimac, Massachusetts, USA
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