Climate and monthly weather forecast
Hanover, NH

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The climate of Hanover

Hanover, New Hampshire, USA, is characterized by a Dfb Köppen climate classification or a Humid continental climate that exhibits no dry season and a warm summer. Geographically, this town is positioned in the Upper Valley region of the Connecticut River, which significantly impacts its weather conditions due to its proximity to the watershed.

There are noticeable fluctuations in the weather parameters throughout the year in Hanover. From the temperature perspective, the maximum average temperature fluctuates from a chilly 25°F (-3.9°C) in January to a mild 77.7°F (25.4°C) in July. Conversely, the minimum average temperature ranges from a frosty 12.6°F (-10.8°C) in January to a tolerable 56.5°F (13.6°C) in July. This indicates a wide variability in temperature over the course of the year.

In terms of humidity, Hanover maintains moderately high relative humidity levels from January to December, with minor variations from 75% to 86%. Rainfall in Hanover is evenly distributed throughout the year, ranging from 1.85" (47mm) in September to 2.99" (76mm) in October, with no dry periods. This town experiences significant snowfall, specifically from January to April and in November and December.

Visibility in Hanover is fairly consistent, usually around 4 to 5 miles. Cloud cover fluctuates from a low of 37% in August to a high of 62% in February, reflecting changing weather situations. The pressure remains relatively steady around 29.91" (760mm) to 30.07" (764mm) throughout the year.

The uniqueness of Hanover's climate manifests in its wind speed that measures between 4.8 MPH and 7.4 MPH, accentuated by gusts from 7.5 MPH to 11.4 MPH. Moreover, daylight varies significantly, from a brief 9 hours in winter to a lengthy 15.4 hours in summer, contributing to the distinction of the seasons.

The best time to visit Hanover

The ideal time to visit Hanover is between May and September. During these months, the average high temperatures range from 64.6°F (18.1°C) to 77.7°F (25.4°C), and the low temperatures vary from 44.2°F (6.8°C) to 56.5°F (13.6°C). These temperatures provide a comfortable climate suitable for outdoor activities and sightseeing. In terms of rainfall, this period still has significant precipitation; however, the longer daylight hours between 14.7 to 15.4 hours and the appealing temperatures make it the best time to experience Hanover's beauty.

The worst time to visit Hanover

The least favorable time to visit Hanover would be from December to March. These months experience the lowest average temperatures, from 12.6°F (-10.8°C) to 32.5°F (0.3°C), along with the highest average snowfall, accumulating up to 11.57" (294mm). The severe cold, coupled with the short daylight hours ranging from 9 to 9.7 hours, can make this period less convenient for sightseeing and outdoor activities.

Spring weather in Hanover

Spring in Hanover is from April to June, characterized by steadily increasing temperatures. The average high temperature shifts from a cool 50.4°F (10.2°C) in April to a balmy 71.6°F (22°C) by June, while the minimum average temperatures rise from 32.5°F (0.3°C) to 50.5°F (10.3°C). Noteworthy rainfall remains consistent during this season, ranging from 2.32" (59mm) to 2.8" (71mm) per month. With an average relative humidity varying from 75% to 78%, spring can feel a dash moist.

Summer weather in Hanover

Summer extends from July to September in Hanover. The average high temperatures remain mostly in the 70s°F, while the average minimum temperatures range from 50.5°F (10.3°C) to 56.5°F (13.6°C). This period experiences the longest daylight hours. The average rainfall slightly decreases to around 2.22" (56mm) in months and humidity holds steady around 79%.

Autumn weather in Hanover

Autumn in Hanover unfolds from October to November. The average high temperature swings from 54.9°F (12.7°C) to 41.9°F (5.5°C), while the average low temperature shifts from 40.1°F (4.5°C) to 29.5°F (-1.4°C). October records the highest average rainfall, measuring 2.99" (76mm). In terms of daylight hours, it winds down from 11 hours per day in October to 9.7 hours in November.

Winter weather in Hanover

Winter in Hanover, stretching from December to March, witnesses the coldest temperatures of the year. The average high temperature plunges from 30.7°F (-0.7°C) in December to 25°F (-3.9°C) in January, with February showing a slight increase to 27.7°F (-2.4°C). However, the average low temperatures remain mostly below freezing, ranging from 12.6°F (-10.8°C) to 21.6°F (-5.8°C). Snowfall during this period is significant, especially in December and February, contributing to a picturesque winter landscape.

Weather in January

Hanover, New Hampshire begins the year with a cool and dry winter month. Typical of January, lower temperatures prevail, reaching from a chilly 12.6°F (-10.8°C) to a slightly warmer 25°F (-3.9°C), along with an impressive amount of snowfall at 8.39" (213mm). Weather in January »

Weather in February

Transitioning from January, February carries forward the winter chill, albeit with noticeable changes. This month witnesses the highest snowfall accumulating up to 11.57" (294mm). Days become slightly longer, nudging the temperature up marginally, hinting at the upcoming spring. Weather in February »

Weather in March

March signals the arrival of spring in Hanover, New Hampshire, leading to subtle shifts in the weather pattern. Relative humidity drops to 84%, from 86% in February, spearheading the transition as winter gives way to spring. In stark contrast to the previous month, snowfall reduces significantly to 6.54" (166mm). Weather in March »

Weather in April

April experiences a significant change, as Hanover, New Hampshire is well into spring. A more significant shift is seen in temperatures, oscillating from 32.5°F (0.3°C) to 50.4°F (10.2°C). April also witnesses an increase in rainfall days to 16.3, which nourishes the blossoming flora. Weather in April »

Weather in May

May is a time of rejuvenation in Hanover, New Hampshire with nature in full swing. Temperatures continue to rise, with the lower end climbing to 44.2°F (6.8°C). This month is characterized by extended daylight hours, warmer weather, and vibrant greenery aided by moderate rainfall which revives the local ecosystems. Weather in May »

Weather in June

The arrival of June marks the beginning of summer in Hanover, New Hampshire, with milder weather conditions than the preceding months. The city sees a further increase in daylight hours, up to 15.4 hours. This month, Hanover enjoys the best visibility of the year - up to 5 miles. Weather in June »

Weather in July

As the peak of summer, July stands out in Hanover, New Hampshire. It tops the year with the highest average temperature, varying from 56.5°F (13.6°C) to 77.7°F (25.4°C). Keeping in sync with the trend, the UV Index reaches 5. This month is also associated with lower wind speeds, leading to calm, serene afternoons. Weather in July »

Weather in August

August continues the summer trend in Hanover, New Hampshire, albeit with slight changes. Temperature margins narrow down in comparison to July, settling between 54.9°F (12.7°C) and 76.3°F (24.6°C). Days shorten slightly, yet Hanover continues to enjoy 13.9 hours of daylight. Weather in August »

Weather in September

September welcomes the onset of Fall in Hanover, New Hampshire. Notably, the rainfall decreases to 1.85" (47mm), providing relief from the rains of previous months. The temperature range continues to decrease while the daylight hours also dwindle down. Weather in September »

Weather in October

October offers a full-fledged autumn experience in Hanover, New Hampshire. With the range of temperatures dropping to between 40.1°F (4.5°C) and 54.9°F (12.7°C), the city enjoys comfortable weather conditions. October's cooler weather and relatively high rainfall create ideal conditions for the stunning fall colors. Weather in October »

Weather in November

November marks a shift towards wintry conditions in Hanover, New Hampshire. With temperatures dropping yet further from 29.5°F (-1.4°C) to 41.9°F (5.5°C). This month sees the reappearance of snowfall, signifying the beginning of the region's well-known winters. Weather in November »

Weather in December

To conclude the year, December brings full-fledged winter to Hanover, New Hampshire. The snowfall once again increases noticeably to 6.85" (174mm). Falling temperatures and heavy snow create an idyllic winter scene and offer opportunities for snowy fun. Weather in December »

Frequently asked questions

What part of the year is the coldest in Hanover?

Hanover experiences its average lowest temperatures in January, reaching a peak of 25°F (-3.9°C) and a minimum of 12.6°F (-10.8°C).

What is the most humid month?

January and February, with an average relative humidity of 86%, are most humid months.

How many days does it rain?

Throughout the year, there are 156.9 rainfall days, and 28.23" (717mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through May, October through December.

How much does it snow?

Throughout the year, there are 75.5 snowfall days, and 40.83" (1037mm) of snow is accumulated.

When does it snow the most?

The month with the most snowfall is February, when snow falls for 16.3 days and typically aggregates up to 11.57" (294mm) of snow.

What is the month with the least sunshine?

The month with the least sunshine is February, with an average of 3.6h of sunshine.

What is the month with the lowest UV index?

February and December, with an average maximum UV index of 1, are months with the lowest UV index.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month?

The least humid month is May, with an average relative humidity of 75%.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

When it does not snow?

In Hanover, snow does not fall in June through September.

When are the longest days?

With an average of 15h and 24min of daylight, June has the longest days of the year.

What is the warmest month?

In Hanover, the peak average temperatures are observed in July, with a high of 77.7°F (25.4°C) and a low of 56.5°F (13.6°C).

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.1h of sunshine.

What is the driest month?

The month with the least rainfall in Hanover is September, when the rain falls for 11.1 days and typically collects 1.85" (47mm) of precipitation.

What is the wettest month?

The month with the most rainfall is October, when the rain falls for 14.1 days and typically aggregates up to 2.99" (76mm) of precipitation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

Average temperature
Hanover, NH

Average temperature - Hanover, NH

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (25°F).

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

Average pressure
Hanover, NH

Average pressure - Hanover, NH

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Hanover, NH

Average wind speed - Hanover, NH

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity
Hanover, NH

Average humidity - Hanover, NH

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (75%).

Average rainfall
Hanover, NH

Average rainfall - Hanover, NH

The wettest month (with the highest rainfall) is October (2.99").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days
Hanover, NH

Average rainfall days - Hanover, NH

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (7.9 days).

Average snowfall
Hanover, NH

Average snowfall - Hanover, NH

The month with the highest snowfall is February (11.57").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Hanover, NH

Average snowfall days - Hanover, NH

The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Hanover, NH

Average daylight / Average sunshine - Hanover, NH

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

Average sunshine days
Hanover, NH

Average sunshine days - Hanover, NH

The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is February (9.8 days).

Average UV index
Hanover, NH

Average UV index - Hanover, NH

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

Average visibility
Hanover, NH

Average visibility - Hanover, NH

The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).

Hanover, New Hampshire, USA

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