Climate and monthly weather forecast
Salem, NH

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The climate of Salem

Situated in one of the the temperate zones, Salem, New Hampshire, USA, experiences a distinct variety in climate over the course of a year. It falls under the Dfb Köppen climate classification, which denotes a humid continental climate with no dry season and warm summers.

Temperature fluctuates noticeably throughout the year with monthly average highs ranging from 32.2°F (0.1°C) to 81.7°F (27.6°C) and lows from 20.3°F (-6.5°C) to 63°F (17.2°C). A guidepost for the seasons, it can tip the scale from quite cold in winter to moderately warm in summer. Relative humidity remains relatively steady throughout the year, varying from values of 71% to 79%.

Rainfall in Salem is well distributed throughout the year with monthly averages between 1.3" (33mm) and 2.87" (73mm). However, the number of rainy days varies significantly from a low of 7.6 to a high of 15.9. Snowfall is mainly experienced in the colder months with January and February receiving 3.46" (88mm) and 5.87" (149mm) respectively. Snowy days range between 0 in the warmer months to 8.5 in winter.

The best time to visit Salem

The optimal period to visit Salem differs based on individual preferences. For those who enjoy mild temperatures and more sunshine, the months between May and September would be ideal. During this time, the average high temperatures vary from 66°F (18.9°C) to 81.7°F (27.6°C), and average low temperatures range from 48.7°F (9.3°C) to 63°F (17.2°C).

Sunshine hours are also at their peak, with the city enjoying between 8.6 hours and 10.6 hours of sunshine per day. Furthermore, relative humidity decreases slightly, providing a more comfortable atmosphere for outdoor activities.

The worst time to visit Salem

Visitors who prefer to avoid colder temperatures and snowfall might find the months from December to February less appealing. During these months, average high temperatures are between 32.2°F (0.1°C) and 42.1°F (5.6°C) and lows between 20.3°F (-6.5°C) and 28.6°F (-1.9°C). Snowfall reaches its peak, with 3.46" (88mm) in December and 5.87" (149mm) in February. Consequently, these months have the highest number of snowy days, with 8.5 days in January and 7.7 days in February.

Spring weather in Salem

Spring in Salem ushers in warmer temperatures after the cold winter months. From March to May, the average high temperatures increase from 42.1°F (5.6°C) to 66°F (18.9°C), and lows rise from 28.6°F (-1.9°C) to 48.7°F (9.3°C). Rainfall also sees an uptick, ranging from 2.56" (65mm) in March to 1.97" (50mm) in May.

Summer weather in Salem

Summer in Salem, from June to August, is characterized by the warmest temperatures of the year. Average high temperatures vary from 73.9°F (23.3°C) to 81.7°F (27.6°C), and lows range between 56.1°F (13.4°C) and 63°F (17.2°C). Despite the warm temperatures, rainfall remains moderate, from 1.97" (50mm) in June to 1.69" (43mm) in August.

Autumn weather in Salem

Autumn sees a gradual dip in temperatures. From September to November, the average highs drop from 72.3°F (22.4°C) to 48.2°F (9°C), and lows decrease from 55.8°F (13.2°C) to 35.4°F (1.9°C). Rainfall surges to 2.83" (72mm) in October — the highest in the year.

Winter weather in Salem

Winter brings with it the coldest days of the year. The average high temperatures from December to February fall between 32.2°F (0.1°C) and 42.1°F (5.6°C), and lows plummet to between 20.3°F (-6.5°C) and 28.6°F (-1.9°C). Snowfall is prevalent, particularly in December and February with 3.46" (88mm) and 5.87" (149mm), respectively.

Weather in January

January in Salem, New Hampshire initiates the year with abundant cloud cover and a fair share of snowfall, comprising a snowfall of 3.46" (88mm) across 8.5 days. The cold winter weather fosters the formation of snow rather than rain, providing a striking contrast to the hot, rain-filled summers in the region. Weather in January »

Weather in February

February sees a continuation of the winter season in Salem, featuring a slight increase in snowfall to 5.87" (149mm) over 7.7 days compared to the preceding month. The crisp winter air is often filled with the soft fluttering of snowflakes, attracting winter sports enthusiasts and lovers of serene landscapes. Weather in February »

Weather in March

In March, Salem experiences an increase in average high temperatures to 42.1°F (5.6°C) and a decrease in snowfall to 4.29" (109mm), signifying the first signs of the coming spring. This mix of winter chill and emerging spring warmth creates a unique climate during this month. Weather in March »

Weather in April

April in Salem brings significant changes, with a substantial temperature hike to 54.7°F (12.6°C) and a decreased snowfall to 1.69" (43mm). A respite from the chilly weather of the preceding months, this transition provides a refreshing change for the residents. Weather in April »

Weather in May

Salem in May experiences a spring climate characterized by warmer temperatures and a further reduction in snowfall to just 0.16" (4mm). With the decline in winter’s influence, spring flowers bloom, creating scenic beauty throughout the city. Weather in May »

Weather in June

June brings the first taste of summer to Salem, New Hampshire, with temperatures peaking at an average high of 73.9°F (23.3°C) and no incidence of snowfall. This onset of the summertime encourages outdoor exploration and participation in water-related activities, especially with the sea temperature rising to 57.1°F (13.9°C). Weather in June »

Weather in July

July is the warmest month in Salem, with the highest average temperature of the year at 81.7°F (27.6°C), and also experiences no snowfall. The hot weather is typically complemented by a relaxed outdoor lifestyle and a diverse array of summer-specific activities and events. Weather in July »

Weather in August

In August, Salem's weather remains summery, featuring high temperatures around 79.9°F (26.6°C) and negligible snowfall. Bask in the late-summer sunshine which permeates the city, despite occasional rainy spells. August offers the perfect climate for beach activities as the sea temperature ascends to a warm 66.4°F (19.1°C). Weather in August »

Weather in September

September in Salem witnesses a slight drop in average high temperatures to 72.3°F (22.4°C) and an absence of snowfall. The commencement of fall ushers in a cooling trend, but the pleasant weather invites continued outdoor activities. Weather in September »

Weather in October

October introduces a more noticeable shift towards cooler weather, with an even further decline in temperatures in Salem than in previous months. As fall deepens, the foliage reaches its peak color, transforming the city into a picturesque scene popular with photographers and nature enthusiasts. Weather in October »

Weather in November

November in Salem marks the start of colder weather, with temperatures dropping down considerably from the previous month. With heavy overcast skies becoming more frequent, the shift toward winter is tangible. As the leaves fall, trees gradually lose their foliage, reflecting the changing seasons. Weather in November »

Weather in December

In December, Salem’s weather grows colder still, with temperatures falling to an average low of 27.3°F (-2.6°C) and snowfall increasing to 4.49" (114mm). As the city gets ready for the Christmas festivities, snow is often a common sight, enveloping Salem in a winter wonderland. Weather in December »
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Frequently asked questions

What are the coldest months in Salem?

With an average high-temperature of 32.2°F (0.1°C) and an average low-temperature of 20.3°F (-6.5°C), January is the coldest month.

How much does it rain in Salem?

In Salem, during the entire year, the rain falls for 144 days and collects up to 26.97" (685mm) of precipitation.

When does it snow in Salem?

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

How much does it snow in Salem?

In Salem, during the entire year, snow falls for 31.9 days and aggregates up to 20.94" (532mm) of snow.

When is the lowest UV index in Salem?

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

What is the most humid month in Salem?

With an average relative humidity of 79%, February is the most humid month.

When does it snow the most in Salem?

The month with the most snowfall in Salem, New Hampshire, is February, when snow falls for 7.7 days and typically aggregates up to 5.87" (149mm) of snow.

What is the month with the least sunshine in Salem?

February has the least sunshine of the year, with an average of 4.7h of sunshine.

What month is the ocean coldest in Salem?

March is the month with the coldest seawater, with an average ocean temperature of 38.8°F (3.8°C).

When is Daylight Saving Time (DST) in Salem?

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 in Salem?

April is the least humid month in Salem, with an average relative humidity of 71%.

When it does not snow in Salem?

June through September are months without snowfall.

When are the longest days in Salem?

June has the longest days of the year, with an average of 15h and 18min of daylight.

What are the months with the highest UV index in Salem?

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

What month is the hottest in Salem?

July, marked by an average high-temperature of 81.7°F (27.6°C) and a low-temperature of 63°F (17.2°C), is the warmest month in Salem.

What month is the ocean warmest in Salem?

August is the month with the warmest seawater in Salem, New Hampshire, with an average ocean temperature of 66.4°F (19.1°C).

What month has the most sunshine in Salem?

August has the most sunshine of the year, with an average of 10.6h of sunshine.

What is the driest month in Salem?

September is the month with the least rainfall in Salem, New Hampshire. Rain falls for 10.6 days and accumulates 1.3" (33mm) of precipitation.

What is the rainiest month in Salem?

December is the month with the most rainfall in Salem, New Hampshire. Rain falls for 10.6 days and accumulates 2.87" (73mm) of precipitation.

What is the month with the shortest days in Salem?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

Average pressure
Salem, NH

Average pressure - Salem, NH

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
Salem, NH

Average wind speed - Salem, NH

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average rainfall
Salem, NH

Average rainfall - Salem, NH

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.3").

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Average rainfall days
Salem, NH

Average rainfall days - Salem, NH

The month with the highest number of rainy days is May (15.9 days).
The months with the least rainy days are January and February (7.6 days).

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Average snowfall
Salem, NH

Average snowfall - Salem, NH

The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Salem, NH

Average snowfall days - Salem, NH

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature
Salem, NH

Average sea temperature - Salem, NH

The best month for swimming (with the highest average sea temperature) is August (66.4°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).

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Average daylight / Average sunshine
Salem, NH

Average daylight / Average sunshine - Salem, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days
Salem, NH

Average sunshine days - Salem, NH

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is May (13.5 days).

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Average UV index
Salem, NH

Average UV index - Salem, 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).

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Average visibility
Salem, NH

Average visibility - Salem, NH

The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).

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Salem, New Hampshire, USA

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