Climate and monthly weather forecast
Manchester, NH

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The colorful buildings in the city of Manchester, New Hampshire, right next to scenic trees on the seashore, a beautiful glass image in the river below
The colorful buildings in the city of Manchester, New Hampshire, right next to scenic trees on the seashore, a beautiful glass image in the river below

The climate of Manchester

Manchester, New Hampshire, positioned in the northeastern part of the United States, is characterized by a Humid continental climate accompanied by no dry season and a warm summer. This classification of climate, also referred to as a Dfb by the Köppen climate classification, brings an overall cold to moderate temperature range to the region.

Throughout the year, the average high and low temperatures typically fluctuate from a low of 18°F (-7.8°C) in January to a high of 81.7°F (27.6°C) in July. The relative humidity levels are mostly stable year-round, maintaining an average percentage between 72% and 81%. Rainfall patterns are noticeable, as the city experiences on average 1.1" (28mm) to 1.38" (35mm) of rain per month, leading to about four and a half to twelve days of rainfall.

In terms of unique weather patterns, there is no distinct dry season, and the summer months are generally warm, leading to a substantial temperature variation throughout the year. Snowfall in Manchester also follows a seasonal pattern, with the highest inches of snow registered in December at 2.99" (76mm), while during the summer, no snowfall is recorded.

The best time to visit Manchester

To experience the warmth of a Humid continental climate, it is recommended to visit Manchester between June and August. During these months, the temperatures range from an agreeable 66.9°F (19.4°C) to 81.7°F (27.6°C), providing optimum conditions to engage in outdoor activities. The city sees longer daylight hours of approximately 14.7 hours in May to 15.3 hours in June. The sunshine duration also peaks in July with 10.1 hours, providing ample opportunities for exploration.

The worst time to visit Manchester

Visiting Manchester is generally discouraged in the cold months between December and February. These months see lower temperatures ranging from 18°F (-7.8°C) in January to 33.3°F (0.7°C) in February, accompanied by increased snowfall of up to 2.99" (76mm) in December. The reduced daylight hours, around 9.4 hours in January and a low amount of sunshine duration of 4.8 hours in December, also contribute to less than ideal conditions for outdoor activities.

Spring weather in Manchester

In Manchester, the spring season, which ranges from March to May, is marked by a gradual increase in temperature from 41.2°F (5.1°C) in March to 66.9°F (19.4°C) in May. Rainfall during these months slightly increases, with rainfall days ranging between 8.3 in March and peaking at 12 in May. In contrast, snowfall significantly decreases from 1.85" (47mm) in March to virtually none by May.

Summer weather in Manchester

Summer in Manchester spans from June to August, and it is characterized by the warmest temperatures of the year, ranging from 74.5°F (23.6°C) in June to a high of 81.7°F (27.6°C) in July. Rainfall remains relatively consistent with days of rainfall sitting at just above 11. Despite the rain, ample sunshine is also present during these months, with July registering the highest average of sunshine hours at 10.1.

Autumn weather in Manchester

Autumn in Manchester brings a decrease in temperature from 72.1°F (22.3°C) in September to 46.6°F (8.1°C) in November. The number of rainfall days decreases throughout the season, starting from 8.4 in September to 7.2 in November. Meanwhile, snowfall begins to appear, with November recording an average of 0.75" (19mm).

Winter weather in Manchester

The winter season in Manchester is cold, with temperatures declining from 36.3°F (2.4°C) in December to a yearly low of 18°F (-7.8°C) in January. The amount of snowfall sees an increase in this period, reaching 2.99" (76mm) in December. Days of snowfall also increase, peaking at 7.1 in December. Despite the cold conditions, the winter season is impressive for its snowy landscape and winter sports opportunities.

Weather in January

Manchester, New Hampshire, sees the new year in with some of its coldest weather. Though the crisp air features far less snowfall than December, at 2.4" (61mm) of snow. This decrease in snowfall is balanced by a relatively high percentage of cloud cover, making for several overcast days. Weather in January »

Weather in February

Even with the plunge past the midpoint of winter, February's weather in the city doesn't show dramatic shifts from January's. The mercury just inches upward, although the snow continues to diminish, reaching as low as 2.32" (59mm). Weather in February »

Weather in March

Spring begins to make itself known in Manchester during March. There is a leap in daily temperatures, yet at the same time, the city gets a final dusting of winter snow, totaling 1.85" (47mm). As the snow makes its exit, daylight increases by more than an hour compared to February, a welcome respite for residents. Weather in March »

Weather in April

April in Manchester brings a true thaw, with daily temperatures taking a turn towards warmth and winter snow finally giving way to rain showers. A notable feature of the month is the reduction of snowfall to just 0.91" (23mm). The increased rainfall nurtures the city's blossoming flora, making it a good time for nature walks. Weather in April »

Weather in May

May tempers the refreshing spring into something resembling the beginnings of a muted summer. Despite warming trends, it isn't a dry month; with remnants of April showers in the form of 0.98" (25mm) of rain. The city becomes a hub of vibrant life, thanks to the bounty of sunlight illuminating the blue skies. Weather in May »

Weather in June

June signals the arrival of summer in Manchester with the highest daylight hours of the year at 15.3 hours. The pleasant breezes balance out the heat, creating a comfortable atmosphere, even though rainfall climbs slightly to 1.18" (30mm). Weather in June »

Weather in July

If Manchester has a hot season, July holds the best claim to the title as the mercury climbs to 81.7°F (27.6°C). The absence of snow and the eleven rain days on average define the month. With the UV Index reaching its peak, it's a key time for summer dressing and sunscreen. Weather in July »

Weather in August

August continues July's heat, but the decreasing daylight announces the imminent arrival of autumn. The month is typically defined by 1.1" (28mm) of rainfall. The decrease in wind speed at 5.1mph (8.2km/h) adds to the still, warm atmosphere. Weather in August »

Weather in September

As summer begins to fade into fall, September sees a drop in daily temperatures in Manchester. A significant reduction in rainfall to 0.79" (20mm) trademarks the advent of the dry season. Clear days and mild temperatures make it a great time to enjoy local festivities. Weather in September »

Weather in October

October welcomes autumn in earnest, with a significant drop in temperatures and an increase in rainfall to 1.38" (35mm). Outdoor activities give way to indoor pursuits as Manchester prepares itself for the winter to come. Sweaters and warm beverages become the order of the day, and the leaf-peeping season reaches its climax. Observing a mild shift, the average high-temperature during October reduces from September's pleasant 72.1°F (22.3°C) to a mild 59.2°F (15.1°C). Weather in October »

Weather in November

November in Manchester is primarily characterized by the return of snow, as evidenced by the monthly total of 0.75" (19mm). Dwindling sunshine hours, drop in temperatures, and the picking up of the wind speeds underscore the shift towards winter. Weather in November »

Weather in December

December marks the beginning of winter in Manchester, with the city's weather taking a decisively cold turn. The most noticeable change is in the form of snowfall, which increases to 2.99" (76mm) compared to November. Light and joy define the festive month with holiday decorations lighting up the shorter, darker days. Weather in December »

Frequently asked questions

What is the coldest time of year?

With an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 18°F (-7.8°C), January is the coldest month.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 4.1 days and typically collects 0.75" (19mm) of precipitation.

How much does it rain?

In Manchester, during the entire year, the rain falls for 104.4 days and collects up to 12.95" (329mm) of precipitation.

When does it snow?

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

How much does it snow?

In Manchester, during the entire year, snow falls for 26.1 days and aggregates up to 11.54" (293mm) of snow.

What is the month with the lowest UV index?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

What is the most humid month?

February is the most humid month in Manchester, with an average relative humidity of 81%.

What is the month with the least sunshine?

With an average of 4.6h of sunshine, February has the least sunshine of the year in Manchester.

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?

April is the least humid month in Manchester, with an average relative humidity of 72%.

When it does not snow?

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

When are the longest days?

The month with the longest days in Manchester is June, with an average of 15h and 18min of daylight.

What are the months with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month?

Manchester records the warmest temperatures in July, averaging a high of 81.7°F (27.6°C) and a low of 61°F (16.1°C).

What month has the most sunshine?

With an average of 10.4h of sunshine, August has the most sunshine of the year.

What is the wettest month?

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.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 4 days and accumulates 2.99" (76mm) of snow.

What is the month with the shortest days?

With an average of 9h and 6min of daylight, December has the shortest days of the year.

Average temperature
Manchester, NH

Average temperature - Manchester, NH

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).

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
Manchester, NH

Average pressure - Manchester, NH

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
Manchester, NH

Average wind speed - Manchester, NH

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
Manchester, NH

Average humidity - Manchester, NH

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).

Average rainfall
Manchester, NH

Average rainfall - Manchester, NH

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
Manchester, NH

Average rainfall days - Manchester, NH

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
Manchester, NH

Average snowfall - Manchester, NH

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
Manchester, NH

Average snowfall days - Manchester, NH

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 / Average sunshine
Manchester, NH

Average daylight / Average sunshine - Manchester, NH

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).

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
Manchester, NH

Average sunshine days - Manchester, NH

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
Manchester, NH

Average UV index - Manchester, NH

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 visibility
Manchester, NH

Average visibility - Manchester, NH

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).

Manchester, New Hampshire, USA

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