October weather forecast
Merrimac, MA

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Weather in October

October, like September, is another mild autumn month in Merrimac, Massachusetts, with temperature in the range of an average high of 59.9°F (15.5°C) and an average low of 46.6°F (8.1°C).

Temperature

Onset of October comes with a temperature decline, the average high falling from a pleasant 72.3°F (22.4°C) in September to a moderate 59.9°F (15.5°C). Merrimac in October anticipates an average nighttime temperature of 46.6°F (8.1°C).

Humidity

In Merrimac, the average relative humidity in October is 77%.

Rainfall

In Merrimac, during October, the rain falls for 6.5 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, in Merrimac, Massachusetts, there are 78.3 rainfall days, and 5.43" (138mm) of precipitation is accumulated.

Snowfall

In Merrimac, snow does not fall in June through October.

Daylight

In October, the average length of the day in Merrimac, Massachusetts, is 11h and 2min.
On the first day of the month, sunrise is at 6:42 am and sunset at 6:24 pm. On the last day of October, in Merrimac, sunrise is at 7:17 am and sunset at 5:37 pm EDT.

Sunshine

The average sunshine in October in Merrimac is 6h.

UV index

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Make use of precautions - It is urged to ward off sun damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

What is the temperature in October in Merrimac?

The average high-temperature and low-temperature in Merrimac, Massachusetts, during October are 59.9°F (15.5°C) and 46.6°F (8.1°C) respectively. In July, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 84.2°F (29°C).

What is the average humidity in October in Merrimac?

In October, the average relative humidity in Merrimac is 77%.

How much does it rain in Merrimac in October?

In Merrimac, Massachusetts, during October, the rain falls for 6.5 days and regularly aggregates up to 0.59" (15mm) of precipitation.

When it does not snow in Merrimac?

June through October are months without snowfall.

Does it snow in Merrimac in October?

In Merrimac, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Merrimac have in October?

The average day length in October in Merrimac is 11h and 2min.

What time are sunrise and sunset in October in Merrimac?

In October, on the first day of the month, sunrise is at 6:42 am and sunset at 6:24 pm. On the last day of the month, in Merrimac, sunrise is at 7:17 am and sunset at 5:37 pm EDT.

How long on average sun shines in October in Merrimac?

In October, the average sunshine duration is 6h.

What is the UV index intensity in October in Merrimac?

In October, the average daily maximum UV index in Merrimac is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Merrimac, MA

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).

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Average pressure in October
Merrimac, MA

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).

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Average wind speed in October
Merrimac, MA

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).

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Average humidity in October
Merrimac, MA

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%).

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Average rainfall in October
Merrimac, MA

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").

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Average rainfall days in October
Merrimac, MA

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).

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Average snowfall in October
Merrimac, MA

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").

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Average snowfall days in October
Merrimac, MA

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).

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Average daylight in October /
Average sunshine in October
Merrimac, MA

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).

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Average sunshine days in October
Merrimac, MA

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).

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Average UV index in October
Merrimac, MA

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).

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Average cloud cover in October
Merrimac, MA

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).

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Average visibility in October
Merrimac, MA

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).

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Merrimac, Massachusetts, USA

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