Climate and monthly weather forecast
Hartford, VT

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The climate of Hartford

Positioned squarely within a Dfb climate zone, Hartford, Vermont manifests a Humid Continental climate with no dry season and warm summers according to the Köppen climate classification. This unfurls a broad wave of climate diversity within the region with cold, snowy winters and warm, occasionally hot, summers and fleeting spring and autumn seasons.

Commencing in January, averages from 12.4°F (-10.9°C) to 25.2°F (-3.8°C), and temperatures slowly rise reaching 78.1°F (25.6°C) by July, then recede gradually, culminating to 30.6°F (-0.8°C) in December. An unmistakable decline in humidity is noted from 86% in January, down to 75% in May and June. From July to December, humidity levels fluctuate moderately between 78% and 83%.

Annual average rainfall hovers around 2.68" (68mm) during the year, peaking at 2.99" (76mm) in October. With respect to the snowfall, the crest of the wave is in February with 10.47" (266mm), then plummets straight away to a negligible 0.31" (8mm) by May remaining practically absent until the end of October. Wind speeds tend to reduce marginally as the year progresses from an average of 7.2mph (11.6km/h) in January to 4.8mph (7.7km/h) in August then ascend to reach 6.8mph (10.9km/h) in December.

The UV index seldom increases beyond 2, except from April to September, where the index leaps to levels 3 and 5 before regrouping to 2 from October onwards. To add to the descriptive tapestry of the climate, this geographical position experiences a varying duration of sunshine from 3.6 hours per day in February peaking at 10 hours in August and then descending to 4 hours by December. An interesting periodic pattern of daylight hours is observed, commencing with a low of 9.4 hours in January, reaching a zenith of 15.4 hours by June and then regressing to 9 hours by the year end.

The Best Time to Visit Hartford

Planning when to visit Hartford hinges largely on interest and preference, given the distinct change in seasons. For avid ski enthusiasts, the winter months from December to February serve as the best period to enjoy the snowfall that ranges from 6.46" (164mm) to 10.47" (266mm). For those inclined towards temperate weather and longer daylight hours, the summer months of June to August offer mild temperatures between 71.8°F (22.1°C) and 78.1°F (25.6°C), prolonged daylight hours up to 15.4 hours, and longest sunshine durations from 8.7 hours to 10 hours.

The Worst Time to Visit Hartford

Rainfall conditions might render certain months less than ideal for a visit. October witnesses the highest rainfall amounts at 2.99" (76mm), coupled with an increase in the number of rainfall days that might hinder outdoor activities. The month of April, despite having moderate rainfall of 2.68" (68mm), experiences the maximum number of rainfall days averaging at 16.6. Hence, for travelers who prefer avoiding excessive precipitation, these months might not be the most suitable for a visit.

Spring Weather in Hartford

Spring season in Hartford extends from March to May, with temperatures rising between 36.1°F (2.3°C) and 64.9°F (18.3°C) over these months. Rainfall averages move between 2.05" (52mm) and 2.32" (59mm). Daylight hours incrementally lengthen from 12 hours to approximately 14.7 hours, while sunshine duration expands from 5 hours in March to 8.2 hours by May.

Summer Weather in Hartford

Hartford's summer, extending from June to August, manifests warmer conditions with temperatures fluctuating from 71.8°F (22.1°C) to 78.1°F (25.6°C). Rainfall quantities are variable, commencing at 2.8" (71mm) in June, easing to 2.68" (68mm) in July and tapering to 2.2" (56mm) in August. The region basks in extended daylight hours varying between 15.4 and 13.9 hours across these months.

Autumn Weather in Hartford

Autumn in Hartford falls in September through November, with temperatures decreasing from 68.7°F (20.4°C) to 42.1°F (5.6°C). Rainfall averages dwindle from 1.85" (47mm) in September to 2.17" (55mm) by November. Daylight hours contract from 12.5 hours in September to 9.7 hours in November while sunshine hours shrink from 8.3 hours in September to 4.9 hours by November.

Winter Weather in Hartford

Winter months in Hartford, expanses from December through February, with temperatures ranging from 12.4°F (-10.9°C) to 27.9°F (-2.3°C). Snowfall soars between December and February, from 6.46" (164mm) to 10.47" (266mm). On the contrary, daylight hours contract and hit the lowest point of 9 hours in December, with sunshine hours dwindling down to 4 hours from December to February.

Weather in January

Hartford, Vermont greets the new year with chilling temperatures and substantial snowfall. The weather leans towards frigid conditions, with average high and low temperatures of 25.2°F (-3.8°C) and 12.4°F (-10.9°C) respectively. Weather in January »

Weather in February

February in Hartford continues the freezing trend of January, with a slight rise in temperature. This subtle increase in warmth does not shift the overall balmy atmosphere, as it's still quite chilly. This period marks another significant snowfall window, with February yielding an average snowfall slightly above 10.4" (264mm). Weather in February »

Weather in March

With the arrival of spring in March, Hartford witnesses a gradual departure from the icy grip of winter. The month experiences a significant jump in the average high temperature to 36.1°F (2.3°C), indicating a departure from freezing lows. Weather in March »

Weather in April

Hartford, in April, rings in a refreshing spring vibe, with the icy winter becoming a distant memory. Warmer temperatures, extended daylight, and minimal likelihood of snow characterize this period. The city's average low temperature scales up to a more comfortable 32.5°F (0.3°C), highlighting the diminishing icy conditions. Weather in April »

Weather in May

As May rolls around, Hartford fully immerses itself in spring's embrace, bidding goodbye to the lingering coolness in the air. With no snowfall, increased sunshine, and warming temperatures, May marks a distinct departure from the preceding months' weather patterns. Weather in May »

Weather in June

The onset of June brings summer to Hartford, transforming the city with its characteristic warmth and sunshine. Temperature rises further, providing ample opportunity for various outdoor recreational activities. June also sees the highest level of daylight, with a peak average of 15.4 hours per day. Weather in June »

Weather in July

Hunting Hartford basks in the highest average high temperature of 78.1°F (25.6°C), granted by July. This month is the warmest in the year but does not compromise on the period of sunshine. It's genuinely summer, with long, languid days and humid nights that complement the heightened activity level. Weather in July »

Weather in August

August maintains a similar weather trend to July and continues to emanate a warm and sunny atmosphere in Hartford. The average high temperature slightly dips to 76.3°F (24.6°C), barely noticeable on the overall warmth of the season. Weather in August »

Weather in September

September signals the advent of autumn in Hartford, gradually replacing the summer heat with cooler temperatures. This month is marked by decrease rainfall of approximately 1.85" (47mm), suggesting conditions becoming drier. The average high temperature drops to 68.7°F (20.4°C), the first distinct indicator of a cooling period. Weather in September »

Weather in October

With October in Hartford, autumn begins its reign in earnest, aglow with shades of red, orange, and yellow. The ever-cooling weather, steady rainfall and diminishing daylight hours embody the classic walk-up to winter. It's the commencement of the crisp and cool chapter of the year, showing a significant drop in average high temperature to 55°F (12.8°C). Weather in October »

Weather in November

November ushers in the cold again in Hartford, emerging as a gateway to freezing temperatures. The city prepares for winter, as reflected by the diminishing number of daylight hours to about 9.7 daily. The weather is increasingly brisk, particularly when the average low temperature clocks in at 29.3°F (-1.5°C). Weather in November »

Weather in December

December completes the calendar year by reintroducing winter conditions to Hartford. It is back to bundling up as temperatures dive, and chances of snowfall increase, marking the annual loop back to winter. The high freeze comes with a corresponding uptick in snowfall, placing December second in line after January, with an average snowfall measure close to 6.5" (165mm). Weather in December »
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Frequently asked questions

What is the coldest time of year in Hartford?

Hartford reaches its average lowest temperatures in January, measuring 25.2°F (-3.8°C) at the peak and 12.4°F (-10.9°C) at the lowest.

What are the most humid months in Hartford?

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

How many days does it rain in Hartford?

Throughout the year, there are 161.9 rainfall days, and 28.46" (723mm) of precipitation is accumulated.

When does it snow in Hartford?

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

How much does it snow in Hartford?

Throughout the year, in Hartford, Vermont, there are 68.9 snowfall days, and 35.91" (912mm) of snow is accumulated.

What is the snowiest month in Hartford?

The month with the most snowfall is February, when snow falls for 15.2 days and typically aggregates up to 10.47" (266mm) of snow.

What is the month with the least sunshine in Hartford?

February has the least sunshine of the year, with an average of 3.6h of sunshine.

When is Daylight Saving Time (DST) in Hartford?

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

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

When is the highest UV index in Hartford?

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

When it does not snow in Hartford?

June through September are months without snowfall.

When are the longest days in Hartford?

The month with the longest days is June, with an average of 15h and 24min of daylight.

What is the warmest month in Hartford?

With average temperatures fluctuating between a high of 78.1°F (25.6°C) and a low of 56.7°F (13.7°C), July stands out as the warmest month in Hartford.

What month has the most sunshine in Hartford?

August has the most sunshine of the year in Hartford, with an average of 10h of sunshine.

What is the driest month in Hartford?

The month with the least rainfall in Hartford is September, when the rain falls for 11.2 days and typically collects 1.85" (47mm) of precipitation.

What is the rainiest month in Hartford?

October is the month with the most rainfall. Rain falls for 14.7 days and accumulates 2.99" (76mm) of precipitation.

What is the month with the shortest days in Hartford?

December has the shortest days of the year, with an average of 9h and 0min of daylight.

When is the lowest UV index in Hartford?

The month with the lowest UV index is December, with an average maximum UV index of 1.

Average temperature
Hartford, VT

Average temperature - Hartford, VT

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (25.2°F).

The month with the highest average low temperature is July (56.7°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure
Hartford, VT

Average pressure - Hartford, VT

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

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Average wind speed
Hartford, VT

Average wind speed - Hartford, VT

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).

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Average humidity
Hartford, VT

Average humidity - Hartford, VT

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

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Average rainfall
Hartford, VT

Average rainfall - Hartford, VT

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

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Average rainfall days
Hartford, VT

Average rainfall days - Hartford, VT

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall
Hartford, VT

Average snowfall - Hartford, VT

The month with the highest snowfall is February (10.47").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Hartford, VT

Average snowfall days - Hartford, VT

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Hartford, VT

Average daylight / Average sunshine - Hartford, VT

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 0min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

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Average sunshine days
Hartford, VT

Average sunshine days - Hartford, VT

The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is March (9.8 days).

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Average visibility
Hartford, VT

Average visibility - Hartford, VT

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).

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Hartford, Vermont, USA

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