Climate and monthly weather forecast
Waterville, ME

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The climate of Waterville

Waterville, Maine, USA, experiences a Dfb Köppen climate classification, also known as the Humid continental climate with no dry season and warm summer. Geographically sitting in the northeastern part of the country, the town encounters diverse weather patterns throughout the year.

Average high temperatures fluctuate from 25.3°F (-3.7°C) in January to 77°F (25°C) in July, demonstrating significant variations across different seasons. Minimum temperatures, on the other hand, range from 11.7°F (-11.3°C) in the colder month of January all the way to 56.8°F (13.8°C) in July. Noticeably, the town observes a steady increment in temperature moving from the cold winter months to the warmer summer months.

Relative humidity in Waterville is consistently high throughout the year, from a low of 78% in April and November up to 85% during February and March. Consequently, the region is invariably moist, contributing to the frequent rainfall and snowfall experienced each year.

Rainfall in Waterville is seen in every month, with the highest amount of precipitation observed in April at 3.03" (77mm) and the lowest in July at 1.73" (44mm). Concurrently, the city has an average of about 14.9 rain days in July and a high of 15.9 rain days in May, showing a moderate distribution of rainy days.

The city also experiences a substantial amount of snowfall in the colder months. The maximum snowfall is recorded in January with 8.07" (205mm) while the minimum is in May with just about 0.71" (18mm). Concurrently, the number of snowy days also shifts between 12.1 in January and a minimal 0.2 in May.

The Best Time to Visit Waterville

Considering optimum weather conditions, including pleasant temperatures, lesser rainfall, and modest humidity, the ideal time to visit Waterville is from June to August. During these months, the maximum temperature hovers around 69.6°F (20.9°C) to 77°F (25°C) and the minimum from 50.4°F (10.2°C) to 56.8°F (13.8°C), resulting in comfortable weather for outdoor activities.

The Worst Time to Visit Waterville

Travelers may want to avoid Waterville during the coldest months between December and February, when the temperature plummets down to 11.7°F (-11.3°C) to 20.1°F (-6.6°C) minimum and 25.3°F (-3.7°C) to 31.6°F (-0.2°C) maximum. These months also witness substantial snowfall—approximately 6.77" (172mm) and 8.07" (205mm) respectively in December and January—further limiting outdoor activities.

Spring Weather in Waterville

Spring in Waterville is characterized by a gradual increase in temperature from a cool 36.3°F (2.4°C) in March to a more comfortable 63°F (17.2°C) in May. Rainfall ranges from 2.17" (55mm) in March to a peak of 3.03" (77mm) in April, whereas the snowfall subsides significantly from 5.98" (152mm) in March to just 0.71" (18mm) in May.

Summer Weather in Waterville

Summers in Waterville are warm with temperatures fluctuating between a maximum of 69.6°F (20.9°C) in June to 77°F (25°C) in July and August, and a minimum temperature from 50.4°F (10.2°C) in June to 56.8°F (13.8°C) in July. Despite the heat, the town experiences a considerable amount of rain with rainfall peaking to 2.76" (70mm) in June.

Autumn Weather in Waterville

Autumn in the city of Waterville witnesses a significant drop in temperatures, from a high of 68.9°F (20.5°C) in September to a cooler 43.2°F (6.2°C) by November. Concurrently, the minimum temperature decreases from 48.9°F (9.4°C) to 29.7°F (-1.3°C) over the same period. Rainfall is moderately high in this season with 2.91" (74mm) observed in October.

Winter Weather in Waterville

Winter is distinctly cold in Waterville. The maximum temperature dips from 55.9°F (13.3°C) in December to 25.3°F (-3.7°C) in January, while the minimum temperature ranges from 31.6°F (-0.2°C) to 13.1°F (-10.5°C) respectively over the same period. Snowfall peaks in January with approximately 8.07" (205mm), supporting winter sports such as skiing and snowboarding.

Weather in January

The weather in Waterville, Maine is fierce in January with low temperatures and significant snowfall. January temperatures oscillate from 11.7°F (-11.3°C) to 25.3°F (-3.7°C), with the lowest temperatures occurring in this month. Weather in January »

Weather in February

Winter reigns supreme in Waterville during February. Albeit marginally higher than January, temperatures in February fluctuate between 13.1°F (-10.5°C) and 27.9°F (-2.3°C), making it the second coldest month in Waterville. Weather in February »

Weather in March

March signals the onset of spring and a break from the severe winter cold in Waterville. Temperatures disproportionally leap in March, varying from 21.2°F (-6°C) to 36.3°F (2.4°C), thus bringing a sense of relief to the local populace. Weather in March »

Weather in April

April in Waterville brings considerable improvements in weather conditions. Indeed, a significant upward transition in temperature is apparent with values stretching from 32.9°F (0.5°C) to 49.8°F (9.9°C). As warmth begins to fill the air, snowfall becomes almost non-existent compared to March, making room for rain showers. Weather in April »

Weather in May

May is a delightful month to be in Waterville, offering a perfect blend of warmth and precipitation. The mercury column in the thermometer stretches from 43°F (6.1°C) to 63°F (17.2°C) throughout May, making it the transition period from cool to warmer months. Weather in May »

Weather in June

June welcomes summer in Waterville with increasing warmth and extended daylight hours. Temperatures range from 50.4°F (10.2°C) to 69.6°F (20.9°C) across June, marking an increase from the relatively cooler month of May. The transition from June to July retains the warmth and adds to the humidity making early summers hot. Weather in June »

Weather in July

July is the peak of summer in Waterville, with the highest temperatures and maximum sunlight hours. It is the hottest month with temperatures varying between 56.8°F (13.8°C) and 77°F (25°C). Compared to June, July experiences slightly lower rainfall and a further escalation in temperature, making it appear drier. Weather in July »

Weather in August

August continues the summer rhythm but with a slightly mellower tone in Waterville. August's temperature varies from 55.4°F (13°C) to 76.5°F (24.7°C), making it a warm month but not as hot as July. Transferring to September, residents notice a sizeable drop in temperature coupled with a decrease in daylight hours. Weather in August »

Weather in September

September in Waterville signifies the advent of fall as temperatures start to dwindle. The heat from August significantly subsides as temperatures range from 48.9°F (9.4°C) to 68.9°F (20.5°C). The shift from September to October witnesses a reduction in temperature, daylight hours, and sunshine hours. Weather in September »

Weather in October

October in Waterville offers a true taste of fall with further reduction in temperature and shorter days. October's temperature spectrum spans from 40.3°F (4.6°C) to 55.9°F (13.3°C), showing a decrease from September's milder conditions. Weather in October »

Weather in November

November is the precursor to Waterville's winter, bearing witness to the lowest temperatures since April. The mercury ranges between 29.7°F (-1.3°C) and 43.2°F (6.2°C) throughout November, a considerable dip from October. As November ushers in December, daylight hours shorten, the cold escalates, and the city begins to experience snowfall. Weather in November »

Weather in December

December in Waterville is in the throes of winter, with low temperatures, short days and frequent snowfall. The temperature fluctuations in December range from 20.1°F (-6.6°C) to 31.6°F (-0.2°C), marking it as the third coldest month. Weather in December »
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Frequently asked questions

What is the coldest time of year in Waterville?

Waterville, Maine, witnesses the coldest weather in January, with temperatures averaging a high of 25.3°F (-3.7°C) and a low of 11.7°F (-11.3°C).

How much does it rain in Waterville?

In Waterville, during the entire year, the rain falls for 140.4 days and collects up to 28.35" (720mm) of precipitation.

When does it snow in Waterville?

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

What is the snowiest month in Waterville?

January is the month with the most snowfall. Snow falls for 12.1 days and accumulates 8.07" (205mm) of snow.

How many days does it snow in Waterville?

In Waterville, during the entire year, snow falls for 55.2 days and aggregates up to 37.83" (961mm) of snow.

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

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

What are the most humid months in Waterville?

February and March, with an average relative humidity of 85%, are most humid months in Waterville, Maine.

What is the month with the least sunshine in Waterville?

The month with the least sunshine in Waterville is February, with an average of 4.3h of sunshine.

When is Daylight Saving Time (DST) in Waterville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Waterville, Maine, 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 are the least humid months in Waterville?

April and November, with an average relative humidity of 78%, are the least humid months.

What is the rainiest month in Waterville?

April is the month with the most rainfall. Rain falls for 15.1 days and accumulates 3.03" (77mm) of precipitation.

When it does not snow in Waterville?

In Waterville, Maine, snow does not fall in June through September.

When are the longest days in Waterville?

The month with the longest days is June, with an average of 15h and 30min of daylight.

What is the month with the highest UV index in Waterville?

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

What is the warmest month in Waterville?

July temperatures in Waterville tend to peak at an average high of 77°F (25°C) and dip to a low of 56.8°F (13.8°C).

What month has the most sunshine in Waterville?

The month with the most sunshine in Waterville, Maine, is August, with an average of 9.8h of sunshine.

What is the driest month in Waterville?

The month with the least rainfall in Waterville is September, when the rain falls for 9.7 days and typically collects 1.54" (39mm) of precipitation.

What is the month with the shortest days in Waterville?

With an average of 8h and 54min of daylight, December has the shortest days of the year.

Average temperature
Waterville, ME

Average temperature - Waterville, ME

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (25.3°F).

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

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Average pressure
Waterville, ME

Average pressure - Waterville, ME

The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Waterville, ME

Average wind speed - Waterville, ME

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity
Waterville, ME

Average humidity - Waterville, ME

The months with the highest relative humidity are February and March (85%).
The months with the lowest relative humidity are April and November (78%).

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Average rainfall
Waterville, ME

Average rainfall - Waterville, ME

The wettest month (with the highest rainfall) is April (3.03").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days
Waterville, ME

Average rainfall days - Waterville, ME

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (5.6 days).

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Average snowfall
Waterville, ME

Average snowfall - Waterville, ME

The month with the highest snowfall is January (8.07").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Waterville, ME

Average snowfall days - Waterville, ME

The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Waterville, ME

Average daylight / Average sunshine - Waterville, ME

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 48min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days
Waterville, ME

Average sunshine days - Waterville, ME

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index
Waterville, ME

Average UV index - Waterville, ME

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover
Waterville, ME

Average cloud cover - Waterville, ME

The months with the most cloud cover are February, March and April (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 40).

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Waterville, Maine, USA

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