Climate and monthly weather forecast
Littleton, NH

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The climate of Littleton

Principally classified as Dfb or Humid Continental under the Köppen climate classification, Littleton, New Hampshire, is a city that experiences no dry season and warm summers. Situated in the northeastern United States, this city demonstrates a discernible difference in weather conditions within its seasons.

During the course of a year in Littleton, temperatures can surge from a nippy low of 9.3°F (-12.6°C) in the wintertime to a balmy high of 76.3°F (24.6°C) in midsummer. Relative humidity stays rather consistent, oscillating between 76 to 89% on average, making for mostly moist conditions. Rainfall is a frequent feature in Littleton's weather, with every month seeing an average of 2.09" (53mm) to 2.91" (74mm). Precipitation is observed on average between 6.7 days to 18.3 days per month.

Snowfall is another discernible aspect of the city's weather conditions, most noticeable from November through April with a peak average snowfall of 13.58" (345mm) in February. Average daily sunlight hours change quite a bit from 9.3 in January to 15.5 in June. Average daily sunshine hours range from 3.4 to 9.9 throughout the year. The yearly UV index typically ranges from 1 to 5. The average visibility rates between 4 to 5 miles, and cloudiness tends to fluctuate between 39 to 71%, implying possibly overcast or clear skies. Additionally, wind speeds hover around 4.5mph (7.2km/h) to 6.5mph (10.5km/h), with the most powerful gusts reaching a velocity of 9mph (14.5km/h).

The Best Time to Visit Littleton

For visitors planning a trip to Littleton, the most favorable time to descend on this city might be from May to September. During these months, the city experience's plentiful sunshine, with average daylight hours straddling 14.8 and 15.1, and long periods of sunlight extending from 8 hours to 9.9 hours daily. The mercury broadly indicates favorable temperatures between 62.6°F (17°C) and 76.3°F (24.6°C). It is also worth noting that these months witness the lowest relative humidity, ranging from 76 to 79%, suggesting more comfortable conditions. The UV index, although higher in this period, merely scales to 5, implying a moderate level of sunlight exposure.

The Worst Time to Visit Littleton

The less desirable time for tourism in Littleton may arguably be the winter months from November to March. Saliently, the thermometer touches its lowest at 9.3°F (-12.6°C) in January, and snowfall is the heaviest during this period, peaking at 13.58" (345mm) in February. Furthermore, the average daylight hours are the shortest, from 8.9 to 10.5, reducing the time visitors can spend outdoors. The relatively higher humidity of 80 to 89% can augment the severe cold.

Spring Weather in Littleton

Spring in Littleton from March to May showcases a noteworthy rise in temperatures, escalating from 11.1°F (-11.6°C) to 62.6°F (17°C). Precipitation takes the form of both rain and snow, with rainfall measuring between 2.17" (55mm) and 2.68" (68mm) and snowfall dialing down from 9.17" (233mm) to 1.22" (31mm). Increased daylight and sunshine hours infuse warmth into the air, and the gusts of wind, although the strongest during this period, are just around 9.8mph (15.8km/h).

Summer Weather in Littleton

Amid June, July, and August, Littleton glows under the sun. Average daily temperatures fluctuate moderately between 74.1°F (23.4°C) and 76.3°F (24.6°C). Rain is a common occurrence, with the average rainfall reaching a yearly high of 2.87" (73mm) in June, and average rainfall days hitting a similar peak at 18.3 in July. This period also sees the least wind, around 4.5 to 5.2mph (8.4km/h).

Autumn Weather in Littleton

Arriving on the heels of summer, the autumn months from September to November register a fall in temperatures, descending from 66.9°F (19.4°C) to 39.4°F (4.1°C). Average rainfall during autumn oscillates between 2.09" (53mm) to 2.91" (74mm), and snowfall returns in November with 5.94" (151mm). Despite the shortening daylight hours, Littleton still enjoys an average of 8.4 to 5.1 hours of sunshine.

Winter Weather in Littleton

From December through February, the city blankets under hefty amounts of snow, with average snowfall measuring between 8.23" (209mm) and 13.58" (345mm). With the plummeting temperatures, which are between 9.3°F (-12.6°C) to 25.3°F (-3.7°C), the mercury can sometimes dip below freezing. The hours of daylight are scarce as well. Despite these conditions, Littleton maintains moderate visibility of 4 to 5 miles throughout this season, attributing to its predominantly clear atmosphere.

Weather in January

Starting the year in Littleton, January is characterized by below-freezing temperatures with an average low of 9.3°F (-12.6°C) and a high of 22.5°F (-5.3°C). Heavy snowfall is also common in this month, resulting in a winter wonderland in Littleton. Weather in January »

Weather in February

In February, wintry conditions persist in Littleton. While temperatures show a moderate increase in comparison to January, with lows of 11.1°F (-11.6°C) and highs of 25.3°F (-3.7°C), it is still firmly within the winter season. Weather in February »

Weather in March

March in Littleton experiences a turning point as winter begins to make way for spring. While witnessing the remnants of winter snowfall with 9.17" (233mm), a marked increase in daytime temperatures up to highs of 33.6°F (0.9°C) offers residents a hint of the changing seasons. Weather in March »

Weather in April

April marks the beginning of meteorological spring in Littleton. The weather shifts towards milder temperatures, soaking rains, and budding greenery. A higher frequency of rainy days and less snowfall are some of the main distinguishing factors of this month. Weather in April »

Weather in May

In May, Littleton is greeted with temperatures that consistently reach up to 62.6°F (17°C). This rise in the mercury level is accompanied by increased hours of daylight. The community welcomes this warm weather, favoring outdoor activities. Weather in May »

Weather in June

Heatwaves typically start in June, as summer begins to take hold in Littleton. The warmer conditions are complimented by extended daylight hours, adding to the overall experience of the summer season. Despite the rise in temperatures, Littleton's weather in June remains relatively balanced. Weather in June »

Weather in July

July is the peak of summer in Littleton, with the average daytime high reaching 76.3°F (24.6°C). Local residents and tourists enjoy outdoor activities facilitated by nearly maximum daylight hours and a considerable amount of sunshine. Weather in July »

Weather in August

August carries over the warmth from July with high temperatures lingering around 74.1°F (23.4°C). The weather in this month continues to be characterized by abundant sunshine and minimal wind, offering perfect conditions for outdoor adventures. Weather in August »

Weather in September

September signals the advent of autumn in Littleton. As the days begin to shorten, the temperatures start to fall down, reaching highs of 66.9°F (19.4°C) on average. The lush green landscapes start to embrace vibrant fall colors. Weather in September »

Weather in October

Autumn is in full swing in October, with temperatures continuing to drop. As the city moves away from the hot summer months, the winds pick up speed, increasing from 4.8mph (7.7km/h) in September to 5.3mph (8.5km/h) in October. Weather in October »

Weather in November

In November, Littleton succumbs to the chilling influence of the approaching winter, with temperatures falling to lows of 27.5°F (-2.5°C). Notably, snow starts appearing in the cityscape, replacing the autumn leaves. This shift in weather marks the beginning of what is typically a very snowy winter season. Weather in November »

Weather in December

Littleton's winter reaches its zenith in December, with the temperature plunging even further and reaching a low of 18.1°F (-7.7°C). Conditions are enhanced by significant snowfall, turning the city into a winter wonderland. Weather in December »
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Frequently asked questions

What are the coldest months in Littleton?

The coldest period in Littleton, New Hampshire, tends to be January, when average temperatures fluctuate between a high of 22.5°F (-5.3°C) and a low of 9.3°F (-12.6°C).

What is the most humid month in Littleton?

The months with the highest humidity in Littleton are January and February, with an average relative humidity of 89%.

How many days does it rain in Littleton?

Throughout the year, there are 164.3 rainfall days, and 29.45" (748mm) of precipitation is accumulated.

When does it snow in Littleton?

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

How many days does it snow in Littleton?

Throughout the year, in Littleton, there are 99.6 snowfall days, and 57.68" (1465mm) of snow is accumulated.

What are the months with the lowest UV index in Littleton?

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Littleton, New Hampshire.

What is the snowiest month in Littleton?

The month with the most snowfall in Littleton is February, when snow falls for 20.8 days and typically aggregates up to 13.58" (345mm) of snow.

What is the month with the least sunshine in Littleton?

The month with the least sunshine is February, with an average of 3h of sunshine.

When is Daylight Saving Time (DST) in Littleton?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Littleton, 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 Littleton?

May is the least humid month, with an average relative humidity of 76%.

When it does not snow in Littleton?

June through September are months without snowfall.

When are the longest days in Littleton?

With an average of 15h and 30min of daylight, June has the longest days of the year in Littleton, New Hampshire.

When is the highest UV index in Littleton?

The months with the highest UV index are June and July, with an average maximum UV index of 5.

What time of the year is the hottest in Littleton?

Temperature records in Littleton mark July as the warmest month, with highs averaging 76.3°F (24.6°C) and lows at 54.1°F (12.3°C).

What month has the most sunshine in Littleton?

With an average of 9.9h of sunshine, August has the most sunshine of the year.

What is the driest month in Littleton?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.09" (53mm) of precipitation.

What is the rainiest month in Littleton?

October is the month with the most rainfall in Littleton. Rain falls for 16.1 days and accumulates 2.91" (74mm) of precipitation.

What is the month with the shortest days in Littleton?

The month with the shortest days is December, with an average of 8h and 54min of daylight.

Average temperature
Littleton, NH

Average temperature - Littleton, NH

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (22.5°F).

The month with the highest average low temperature is July (54.1°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).

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Average pressure
Littleton, NH

Average pressure - Littleton, NH

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Littleton, NH

Average wind speed - Littleton, NH

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity
Littleton, NH

Average humidity - Littleton, NH

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).

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Average rainfall
Littleton, NH

Average rainfall - Littleton, NH

The wettest month (with the highest rainfall) is October (2.91").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days
Littleton, NH

Average rainfall days - Littleton, NH

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (6.7 days).

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Average snowfall
Littleton, NH

Average snowfall - Littleton, NH

The month with the highest snowfall is February (13.58").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Littleton, NH

Average snowfall days - Littleton, NH

The month with the highest number of snowfall days is January (21.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Littleton, NH

Average daylight / Average sunshine - Littleton, NH

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).

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).

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Average sunshine days
Littleton, NH

Average sunshine days - Littleton, NH

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (5.9 days).

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Average UV index
Littleton, NH

Average UV index - Littleton, 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 and December (UV index 1).

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Average visibility
Littleton, NH

Average visibility - Littleton, NH

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

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Littleton, New Hampshire, USA

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