Climate and monthly weather forecastColebrook, NH
Climate and monthly weather forecast
The climate of Colebrook
Colebrook, located in New Hampshire, USA, falls in the Humid continental, no dry season, warm summer category of the Köppen climate classification, denoted as Dfb. Throughout the year, this area experiences a wide range of temperatures and substantial variations in weather patterns. Despite harsh winters, Colebrook also enjoys warm summers with temperatures steadily increasing up to 74.5°F (23.6°C).The temperature ranges from a low of 7.3°F (-13.7°C) in the cold months to a high of 74.5°F (23.6°C) during the warm months. However, the climate remains relatively humid throughout the year with a relative humidity registering between 77% and 91%. Rainfall in Colebrook varies moderately, with monthly averages fluctuating between 2.01in and 3.11in. Notably, there are more rainfall days in the summer, from 19 to 19.8 days, than in the winter, which sees 4.1 to 8.8 days.
Having a distinct four-season climate, Colebrook sees its highest snowfall, from 10.16in to 12.4in, in the winter months and virtually no snowfall during the warm months. The number of daylight hours ranges noticeably throughout the year, from a low of 8.9 hours in December to a long 15.6 hours in June. However, the duration of actual sunshine received varies dramatically, with the highest hours of sunlight, 8.3 to 9.4 hours, in the summer, dropping to a minimum of 2.1 to 3.7 hours in the winter.
The best time to visit Colebrook
The best time to visit Colebrook would ideally be during the warm summer months, when the daily temperature averages between 61.3°F (16.3°C) and 74.5°F (23.6°C). June provides the most daylight, with 15.6 hours, allowing visitors to engage in outdoor activities for a longer period. Longer sunshine hours, ranging between 7.6 hours to 9.4 hours, help create more pleasant conditions for sightseeing and exploring the local areas. July carries the highest UV index, at 5 units, which boosts the summertime feel.The worst time to visit Colebrook
Owing to the area's Humid Continental climate, winters in Colebrook can be dissuading for tourists due to the harsh conditions. December and January record the lowest temperatures, from 7.3°F (-13.7°C) to 21°F (-6.1°C), while also having the least daylight and sunshine hours. Combined with frequent snowfall, from 10.16in to 12.4in during these months, and toppling 21 snowfall days, outdoor activities could be limited due to these severe conditions.Spring weather in Colebrook
Spring in Colebrook sees a considerable rise in temperature and a moderate amount of rainfall. From March to May, the daily temperature varies from 17.1°F (-8.3°C) to 61.3°F (16.3°C). Rainfall during this period ranges between 2.2in and 2.83in, spread over 8.8 to 17.3 days of precipitation. Additionally, there is a significant increment in daylight hours and sunshine duration, increasing from 12 hours to 14.9 hours and 3.5 hours to 7.6 hours, respectively.Summer weather in Colebrook
Summer months in Colebrook from June to August present warmer temperatures, abundant daylight, and more sunshine hours. During this period, temperatures range from 47.5°F (8.6°C) to 74.5°F (23.6°C). The amount of rainfall slightly elevates, with an average between 2.68in to 3.11in, spanned over 19 to 19.8 days. Markedly, this period ensures maximum daylight, from 14.9 hours to 15.6 hours, and a considerable amount of sunshine, from 8.3 hours to 9.4 hours.Autumn weather in Colebrook
Temperatures begin to drop in Autumn, with monthly averages slowly declining from 51.4°F (10.8°C) in September to 25.7°F (-3.5°C) in November. Rainfall gets slightly heavier, from 2.64in to 2.99in. The daylight gradually lessens from 12.5 hours in September to 9.6 hours in November, alongside diminishing sunshine hours, from 7.7 hours to 3.7 hours.Winter weather in Colebrook
Winter months in Colebrook, from December to February, correspond with the coldest temperatures from 7.3°F (-13.7°C) to 31.5°F (-0.3°C). Snowfall is substantial, measuring between 10.16in and 12.4in, spread over 20.5 to 21 days. Both daylight and sunshine hours are at their lowest during these months, going from 9.6 hours to 9.3 hours and 3.7 hours to 2.1 hours, respectively. Despite the challenging conditions, the winter aesthetics of this region can offer a unique appeal to visitors who appreciate the snowy-white landscapes.Weather in January
The initial month of the year in Colebrook, New Hampshire exhibits a thoroughly wintry pattern. Aptly characterized by frequent snowfall with up to 12.4" (315mm) and 21 snowy days on record, January is the epitome of a frosty New England winter. Weather in January »Weather in February
In comparison to its predecessor, February in Colebrook, New Hampshire shows a slight reduction in snowfall. While the temperatures generally remain low, an onset of slightly milder days become noticeable. Humidity lingers at a high of 91%, very similar to January. Weather in February »Weather in March
March proves to be a month of fairly significant change in the weather pattern in Colebrook. Temperatures begin to rise slightly, and snowfall decreases to 10.98" (279mm), ushering in more favorable conditions. Daylight hours extend to 12 hours, a testament to the arrival of spring. Weather in March »Weather in April
April in Colebrook heralds the arrival of spring in earnest. With temperatures climbing, snowfall diminishes significantly to a mere 7.52" (191mm). The retreat of winter is also apparent with daylight hours increasing to a generous 13.5 hours. Weather in April »Weather in May
May's arrival is celebrated with an appreciable surge in temperatures in Colebrook. Yet, the month also marks the transition from characteristic snowfalls of winter to regular bouts of rainfall, registering at 2.83" (72mm). An increase in daylight to almost 15 hours coincides with the longer, warmer days that define late spring. Weather in May »Weather in June
June in Colebrook heralds the advent of summer, characterized by a considerable leap in temperatures. While rainfall does persist, it brings with it no hindrance to the enjoyment of the now lengthier days, with up to 15.6 hours of daylight at disposal. Weather in June »Weather in July
July, being the peak of summer in Colebrook, witnesses the highest temperatures of the year reaching a peak of 74.5°F (23.6°C). With up to 15.2 daylight hours, it's the perfect month for outdoor recreational activities. Relative humidity stands stable at 80%, while periods of rainfall moderate the heat somewhat. Weather in July »Weather in August
The arrival of August in Colebrook marks the commencement of the transition from summer to fall. Steady humidity at 81% coupled with rainfall totals of 2.64" (67mm) ensure a moist atmosphere. At the same time, daylight hours begin to decrease, coming down to 14 hours. Weather in August »Weather in September
The arrival of September brings noticeable changes in the weather in Colebrook, as it marks the beginning of the fall season. Temperatures start to decline, and daylight hours reduce to 12.5 hours. The relative humidity of 81% and the rainfall in check assure one of a typical fall climate. Weather in September »Weather in October
In October, the weather in Colebrook begins to take on a distinctive autumnal feel, signaling a gradual transition toward winter. With falling temperatures, daylight hours diminish to 10.9 hours. The fall foliage of New Hampshire gets frequent showers with rainfall amounting to nearly 3" (76mm). Weather in October »Weather in November
As the penultimate month of the year, November in Colebrook slides the area further into winter, with temperatures continuing to descend. The arrival of snowfall, amounting to 7.24" (184mm), marks a definite shift toward winter. Weather in November »Weather in December
The finale month of the year in Colebrook, December, fully embodies the essence of a New England winter. Accompanying cold temperatures, snowfall increases substantially to 10.16" (258mm). With only 8.9 hours of daylight, the shortest of the year, most days have an early sunset. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Colebrook, NH
The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is January (21°F).
The month with the highest average low temperature is July (53.4°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure
Colebrook, NH
- Average pressure in January:
30"Hg - Average pressure in February:
29.99"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Colebrook, NH
- Average wind speed in January:
7.1mph - Average wind speed in February:
7.3mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.6mph - Average wind speed in May:
6.7mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.5mph - Average wind speed in September:
5.7mph - Average wind speed in October:
6.4mph - Average wind speed in November:
6.7mph - Average wind speed in December:
6.9mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity
Colebrook, NH
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (77%).
Average rainfall
Colebrook, NH
- Average rainfall in January:
2.24" - Average rainfall in February:
2.01" - Average rainfall in March:
2.2" - Average rainfall in April:
2.83" - Average rainfall in May:
2.83" - Average rainfall in June:
3.11"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.64" - Average rainfall in September:
2.64" - Average rainfall in October:
2.99" - Average rainfall in November:
2.24" - Average rainfall in December:
2.44"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days
Colebrook, NH
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
19.1 days
- Average rainfall days in July:
19.8 days - Average rainfall days in August:
19.3 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
16.4 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (4.1 days).
Average snowfall
Colebrook, NH
- Average snowfall in January:
12.4" - Average snowfall in February:
12.36" - Average snowfall in March:
10.98" - Average snowfall in April:
7.52" - Average snowfall in May:
1.3" - Average snowfall in June:
0"
The month with the highest snowfall is January (12.4").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Colebrook, NH
- Average snowfall days in January:
21 days - Average snowfall days in February:
21.3 days - Average snowfall days in March:
18.4 days - Average snowfall days in April:
10.7 days - Average snowfall days in May:
1.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
3.6 days - Average snowfall days in November:
10.7 days - Average snowfall days in December:
20.5 days
The month with the highest number of snowfall days is February (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Colebrook, NH
- Average daylight in January:
9h and 18min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 12min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
2h and 6min - Average sunshine in February:
2h and 6min - Average sunshine in March:
3h and 30min - Average sunshine in April:
5h and 48min - Average sunshine in May:
7h and 36min - Average sunshine in June:
8h and 18min
- Average sunshine in July:
9h and 24min - Average sunshine in August:
9h and 12min - Average sunshine in September:
7h and 42min - Average sunshine in October:
4h and 42min - Average sunshine in November:
3h and 42min - Average sunshine in December:
2h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The months with the least sunshine are January and February (Average sunshine: 2h and 6min).
Average sunshine days
Colebrook, NH
- Average sunshine days in January:
9.2 days - Average sunshine days in February:
6.2 days - Average sunshine days in March:
8.5 days - Average sunshine days in April:
8 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
9.4 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
9 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
11.1 days - Average sunshine days in November:
12.3 days - Average sunshine days in December:
8.3 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (6.2 days).
Average UV index
Colebrook, NH
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover
Colebrook, NH
The month with the most cloud cover is February (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility
Colebrook, NH
The months with the highest visibility are May, June and July (5mi).
The months with the lowest visibility are January, February, March, April, August, September, October, November and December (4mi).





