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
The transition into October in Merrimack indicates a reduction in the average high-temperature, down to a moderate 59.2°F (15.1°C) from September's agreeable 72.1°F (22.3°C). In Merrimack, an average low-temperature of 44.6°F (7°C) is recorded during October nights.Humidity
The average relative humidity in October in Merrimack is 78%.Rainfall
The month with the most rainfall is October, when the rain falls for 9.4 days and typically aggregates up to 1.38" (35mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Merrimack. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.28" (7mm) of snow. Throughout the year, there are 26.1 snowfall days, and 11.54" (293mm) of snow is accumulated.Daylight
In Merrimack, the average length of the day in October is 11h and 2min.On the first day of the month, sunrise is at 6:44 am and sunset at 6:26 pm. On the last day of October, in Merrimack, sunrise is at 7:19 am and sunset at 5:39 pm EDT.
Sunshine
The average sunshine in October in Merrimack is 5.9h.UV index
In Merrimack, the average daily maximum UV index in October is 3. 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 3 during October translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October in Merrimack?
What is the average humidity in October in Merrimack?
What is the rainiest month in Merrimack?
How much does it rain in Merrimack in October?
When does it start to snow in Merrimack?
What is the average length of the day in October in Merrimack?
When are sunrise and sunset in October in Merrimack?
How many hours of sunshine does Merrimack have in October?
What is the UV index intensity in October in Merrimack?
Average temperature in October
Merrimack, NH
- Average high temperature in October: 59.2°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 (30.6°F).
- Average low temperature in October: 44.6°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in October
Merrimack, NH
- 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
Merrimack, NH
- Average wind speed in October: 6.7mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in October
Merrimack, NH
- Average humidity in October: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in October
Merrimack, NH
- Average rainfall in October: 1.38"
The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in October
Merrimack, NH
- Average rainfall days in October: 9.4 days
The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in October
Merrimack, NH
- Average snowfall in October: 0.28"
The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Merrimack, NH
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Merrimack, NH
- 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: 5h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in October
Merrimack, NH
- Average sunshine days in October: 20 days
The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).
Average UV index in October
Merrimack, NH
- 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
Merrimack, NH
- Average cloud cover in October: 44
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in October
Merrimack, NH
- Average visibility in October: 5mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Merrimack, New Hampshire, USA
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