Climate and monthly weather forecast
Williamsport, IN

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Weather in January

January, the same as December, is an icy winter month in Williamsport, Indiana, with an average temperature ranging between max 32°F (0°C) and min 20.1°F (-6.6°C). January is the coldest month, exhibiting average temperatures of 32°F (0°C) at the peak and 20.1°F (-6.6°C) at the base. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Williamsport, Indiana, with temperature in the range of an average low of 23.7°F (-4.6°C) and an average high of 36.3°F (2.4°C). With the onset of February, the average high-temperature registers at a still icy 36.3°F (2.4°C), subtly different from January's 32°F (0°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Williamsport, Indiana, with an average temperature ranging between max 49.1°F (9.5°C) and min 34.5°F (1.4°C). The arrival of March brings a change in Williamsport's weather, with average high-temperatures moving from February's cold 36.3°F (2.4°C) to a chilly 49.1°F (9.5°C). Weather in March »

Weather in April

April in Williamsport, Indiana, is a comfortable spring month, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 60.8°F (16°C). The shift into April is characterized by a rise in the average high-temperature, transitioning from March's frosty 49.1°F (9.5°C) to an enjoyable 60.8°F (16°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Williamsport, Indiana, with an average temperature ranging between min 54.9°F (12.7°C) and max 71.8°F (22.1°C). As Williamsport, Indiana, welcomes May, the average high-temperature sees a rise, transitioning from a refreshing 60.8°F (16°C) in April to a pleasant 71.8°F (22.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Williamsport, Indiana, with an average temperature ranging between max 79.3°F (26.3°C) and min 63°F (17.2°C). In Williamsport, stepping into June brings a gentle temperature nudge, moving slightly up from May's agreeable 71.8°F (22.1°C) to a moderately hot 79.3°F (26.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Williamsport, Indiana, with an average temperature ranging between max 81.5°F (27.5°C) and min 64.4°F (18°C). July, with its average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.4°F (18°C), holds the record as the warmest month. In July, the heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Williamsport, Indiana, with an average temperature fluctuating between 62.8°F (17.1°C) and 80.2°F (26.8°C). The onset of August notes an average high-temperature of a still warm 80.2°F (26.8°C), subtly shifted from July's 81.5°F (27.5°C). Weather in August »

Weather in September

September, the first month of the autumn in Williamsport, is still a warm month, with an average temperature ranging between min 57.6°F (14.2°C) and max 75.7°F (24.3°C). In September, Williamsport experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 80.2°F (26.8°C) in August to a still moderately hot 75.7°F (24.3°C). Weather in September »

Weather in October

October, like September, in Williamsport, Indiana, is another comfortable autumn month, with an average temperature varying between 47.1°F (8.4°C) and 63°F (17.2°C). The commencement of October indicates a shift in the average high-temperature, receding from September's moderately hot 75.7°F (24.3°C) to a comfortable 63°F (17.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Williamsport, Indiana, with temperature in the range of an average high of 48.7°F (9.3°C) and an average low of 35.2°F (1.8°C). The transition into November is accompanied by a temperature decrease, with the average high-temperature shifting from a refreshing 63°F (17.2°C) in October to a frosty 48.7°F (9.3°C). Weather in November »

Weather in December

December, the first month of the winter in Williamsport, is still a cold month, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 27.3°F (-2.6°C). A shift in Williamsport's weather is observed as November turns into December, with the average high temperature reducing from a chilly 48.7°F (9.3°C) to a wintry 37.6°F (3.1°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Williamsport?

In Williamsport, January is known for its average lowest temperatures, reaching a high of 32°F (0°C) and a low of 20.1°F (-6.6°C).

How much does it rain in Williamsport?

Throughout the year, there are 161.5 rainfall days, and 27.91" (709mm) of precipitation is accumulated.

When does it snow in Williamsport?

January through April, November and December are months with snowfall.

How many days does it snow in Williamsport?

In Williamsport, Indiana, during the entire year, snow falls for 37.6 days and aggregates up to 10.59" (269mm) of snow.

What is the month with the least sunshine in Williamsport?

January has the least sunshine of the year in Williamsport, Indiana, with an average of 4.1h of sunshine.

What is the snowiest month in Williamsport?

The month with the most snowfall is February, when snow falls for 9.6 days and typically aggregates up to 3.27" (83mm) of snow.

When is Daylight Saving Time (DST) in Williamsport?

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 rainiest month in Williamsport?

The month with the most rainfall is April, when the rain falls for 16.1 days and typically aggregates up to 3.39" (86mm) of precipitation.

When it does not snow in Williamsport?

May through October are months without snowfall in Williamsport, Indiana.

When are the longest days in Williamsport?

The month with the longest days in Williamsport, Indiana, is June, with an average of 15h and 0min of daylight.

What month has the most sunshine in Williamsport?

The month with the most sunshine in Williamsport is June, with an average of 10.1h of sunshine.

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

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

What part of the year is the hottest in Williamsport?

Williamsport experiences its average highest temperatures in July, reaching a peak of 81.5°F (27.5°C) and a minimum of 64.4°F (18°C).

What is the most humid month in Williamsport?

With an average relative humidity of 84%, July is the most humid month.

What is the driest month in Williamsport?

The month with the least rainfall in Williamsport is September, when the rain falls for 12.6 days and typically collects 1.5" (38mm) of precipitation.

What is the least humid month in Williamsport?

October is the least humid month in Williamsport, with an average relative humidity of 73%.

What is the month with the shortest days in Williamsport?

The month with the shortest days in Williamsport is December, with an average of 9h and 24min of daylight.

When is the lowest UV index in Williamsport?

With an average maximum UV index of 1, December is the month with the lowest UV index in Williamsport, Indiana.

Average temperature
Williamsport, IN

Average temperature - Williamsport, IN

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32°F).

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure
Williamsport, IN

Average pressure - Williamsport, IN

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Williamsport, IN

Average wind speed - Williamsport, IN

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity
Williamsport, IN

Average humidity - Williamsport, IN

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).

Average rainfall
Williamsport, IN

Average rainfall - Williamsport, IN

The wettest month (with the highest rainfall) is April (3.39").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days
Williamsport, IN

Average rainfall days - Williamsport, IN

The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is February (7.3 days).

Average snowfall
Williamsport, IN

Average snowfall - Williamsport, IN

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Williamsport, IN

Average snowfall days - Williamsport, IN

The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Williamsport, IN

Average daylight / Average sunshine - Williamsport, IN

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days
Williamsport, IN

Average sunshine days - Williamsport, IN

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is July (9 days).

Average visibility
Williamsport, IN

Average visibility - Williamsport, IN

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

Williamsport, Indiana, USA

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