Climate and monthly weather forecast
Williamstown, OH

Weather in January

January, like December, is another subzero cold winter month in Williamstown, Ohio, with an average temperature ranging between min 19.8°F (-6.8°C) and max 31.1°F (-0.5°C). January is the coldest month, with an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 19.8°F (-6.8°C). Weather in January »

Weather in February

February, the last month of the winter in Williamstown, is a wintry month, with an average temperature fluctuating between 23°F (-5°C) and 35.2°F (1.8°C). In Williamstown, the average high-temperature in February is relatively the same as in January - a wintry 35.2°F (1.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Williamstown, Ohio, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 46.6°F (8.1°C). In Williamstown, the average high-temperature in March increases from a wintry 35.2°F (1.8°C) in February to a frosty 46.6°F (8.1°C). Weather in March »

Weather in April

April in Williamstown, Ohio, is a mild spring month, with temperature in the range of an average low of 41.7°F (5.4°C) and an average high of 58.6°F (14.8°C). In Williamstown, the average high-temperature in April rises from a frosty 46.6°F (8.1°C) in March to a moderate 58.6°F (14.8°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Williamstown, Ohio, with temperature in the range of an average low of 53.4°F (11.9°C) and an average high of 70.3°F (21.3°C). In Williamstown, the average high-temperature in May increases from a mild 58.6°F (14.8°C) in April to an agreeable 70.3°F (21.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Williamstown, Ohio, with an average temperature varying between 60.4°F (15.8°C) and 77.5°F (25.3°C). In June, the average high-temperature marginally rises from a pleasant 70.3°F (21.3°C) in May to a moderately hot 77.5°F (25.3°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Williamstown, Ohio, with an average temperature varying between 63.7°F (17.6°C) and 80.2°F (26.8°C). July is the warmest month, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 63.7°F (17.6°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Williamstown, Ohio, with an average temperature varying between 78.6°F (25.9°C) and 60.8°F (16°C). In Williamstown, the average high-temperature in August is relatively the same as in July - a still moderately hot 78.6°F (25.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Williamstown, Ohio, with an average temperature varying between 73.4°F (23°C) and 55.4°F (13°C). In September, the average high-temperature is relatively the same as in August - a still warm 73.4°F (23°C). Weather in September »

Weather in October

October, like September, in Williamstown, Ohio, is another comfortable autumn month, with an average temperature ranging between max 61.5°F (16.4°C) and min 46°F (7.8°C). In October, the average high-temperature decreases from a warm 73.4°F (23°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Williamstown, Ohio, with an average temperature fluctuating between 35.1°F (1.7°C) and 48°F (8.9°C). In November, the average high-temperature decreases from an enjoyable 61.5°F (16.4°C) in October to a chilly 48°F (8.9°C). Weather in November »

Weather in December

December, the first month of the winter in Williamstown, is also a wintry month, with an average temperature fluctuating between 37°F (2.8°C) and 27.5°F (-2.5°C). In Williamstown, the average high-temperature in December drops from a chilly 48°F (8.9°C) in November to a wintry 37°F (2.8°C). Weather in December »
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FAQ

What is the coldest month in Williamstown?

The coldest month in Williamstown, Ohio, is January, with an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 19.8°F (-6.8°C).

What is the most humid month in Williamstown?

The months with the highest humidity are January and February, with an average relative humidity of 84%.

How much does it rain in Williamstown?

Throughout the year, there are 168.7 rainfall days, and 29.72" (755mm) of precipitation is accumulated.

When does it snow in Williamstown?

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

How much does it snow in Williamstown?

Throughout the year, in Williamstown, Ohio, there are 48.9 snowfall days, and 13.23" (336mm) of snow is accumulated.

What is the month with the least sunshine in Williamstown?

The month with the least sunshine in Williamstown, Ohio, is January, with an average of 3.4h of sunshine.

What is the snowiest month in Williamstown?

February is the month with the most snowfall. Snow falls for 11.4 days and accumulates 3.74" (95mm) of snow.

When is Daylight Saving Time (DST) in Williamstown?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Williamstown, Ohio, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What is the wettest month in Williamstown?

The month with the most rainfall in Williamstown is June, when the rain falls for 18.8 days and typically aggregates up to 3.54" (90mm) of precipitation.

When it does not snow in Williamstown?

In Williamstown, Ohio, snow does not fall in June through September.

When are the longest days in Williamstown?

With an average of 15h and 4min of daylight, June has the longest days of the year in Williamstown, Ohio.

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

June and July, with an average maximum UV index of 6, are months with the highest UV index in Williamstown.

What is the warmest month in Williamstown?

The warmest month is July, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 63.7°F (17.6°C).

What month has the most sunshine in Williamstown?

With an average of 10.1h of sunshine, July has the most sunshine of the year in Williamstown, Ohio.

What is the least humid month in Williamstown?

The months with the lowest humidity in Williamstown are October and November, with an average relative humidity of 75%.

What is the driest month in Williamstown?

December is the month with the least rainfall in Williamstown. Rain falls for 10.5 days and accumulates 1.81" (46mm) of precipitation.

What is the month with the shortest days in Williamstown?

December has the shortest days of the year in Williamstown, Ohio, with an average of 9h and 18min of daylight.

What is the month with the lowest UV index in Williamstown?

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

Average temperature
Williamstown, OH

Average temperature - Williamstown, OH

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (31.1°F).

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure
Williamstown, OH

Average pressure - Williamstown, OH

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Williamstown, OH

Average wind speed - Williamstown, OH

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity
Williamstown, OH

Average humidity - Williamstown, OH

The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall
Williamstown, OH

Average rainfall - Williamstown, OH

The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is December (1.81").

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Average rainfall days
Williamstown, OH

Average rainfall days - Williamstown, OH

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall
Williamstown, OH

Average snowfall - Williamstown, OH

The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Williamstown, OH

Average snowfall days - Williamstown, OH

The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Williamstown, OH

Average daylight / Average sunshine - Williamstown, OH

The month with the longest days is June (Average daylight: 15h and 4min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days
Williamstown, OH

Average sunshine days - Williamstown, OH

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is June (9.3 days).

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Average visibility
Williamstown, OH

Average visibility - Williamstown, OH

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

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