Climate and monthly weather forecast
Charlestown, IN

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Weather in January

January, like December, in Charlestown, Indiana, is another cold winter month, with temperature in the range of an average low of 25.2°F (-3.8°C) and an average high of 38.5°F (3.6°C). In Charlestown, Indiana, the lowest average temperatures are observed in January, with a high of 38.5°F (3.6°C) and a low of 25.2°F (-3.8°C). Weather in January »

Weather in February

February, the last month of the winter in Charlestown, is a frosty month, with an average temperature ranging between max 43.3°F (6.3°C) and min 28.6°F (-1.9°C). The ushering in of February brings an average high-temperature of a frosty 43.3°F (6.3°C), closely mirroring the 38.5°F (3.6°C) of January. Weather in February »

Weather in March

March, the first month of the spring in Charlestown, is a fresh month, with an average temperature fluctuating between 53.6°F (12°C) and 37.4°F (3°C). An escalation in the average high-temperature is seen with the onset of March, moving from a chilly 43.3°F (6.3°C) in February to a cool 53.6°F (12°C). Weather in March »

Weather in April

April in Charlestown, Indiana, is a refreshing spring month, with an average temperature fluctuating between 65.5°F (18.6°C) and 46.9°F (8.3°C). April's arrival coincides with a temperature rise, moving from March's fresh 53.6°F (12°C) to an enjoyable 65.5°F (18.6°C). Weather in April »

Weather in May

May, the last month of the spring in Charlestown, is a moderately hot month, with an average temperature varying between 56.5°F (13.6°C) and 75.4°F (24.1°C). With the arrival of May, the average high-temperature transitions from an enjoyable 65.5°F (18.6°C) in April to a warm 75.4°F (24.1°C). Weather in May »

Weather in June

June, the first month of the summer in Charlestown, is also a moderately hot month, with an average temperature fluctuating between 83.7°F (28.7°C) and 64°F (17.8°C). The coming of June brings a minor shift in Charlestown's weather, with average high-temperatures adjusting from May's 75.4°F (24.1°C) to a still warm 83.7°F (28.7°C). Weather in June »

Weather in July

July is a tropical summer month in Charlestown, Indiana, with an average temperature varying between 86.5°F (30.3°C) and 66.9°F (19.4°C). July is the month when Charlestown experiences its warmest temperatures, averaging a high of 86.5°F (30.3°C) and a low of 66.9°F (19.4°C). In July, the average heat index is calculated to be a very hot 98.6°F (37°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Charlestown, Indiana, with an average temperature varying between 65.3°F (18.5°C) and 85.6°F (29.8°C). Transitioning into August, Charlestown experiences an average high-temperature of a warm 85.6°F (29.8°C), marking a minor shift from the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Charlestown, Indiana, with an average temperature fluctuating between 59.7°F (15.4°C) and 79.2°F (26.2°C). September ushers in a minor alteration in Charlestown's climate, with the average high-temperature moving from August's 85.6°F (29.8°C) to a still warm 79.2°F (26.2°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Charlestown, Indiana, with an average temperature varying between 66.2°F (19°C) and 48.2°F (9°C). Charlestown's October weather shows a moderate shift in high-temperatures, falling from September's warm 79.2°F (26.2°C) to a refreshing 66.2°F (19°C). Weather in October »

Weather in November

November, the last month of the autumn in Charlestown, is also a fresh month, with an average temperature fluctuating between 52.7°F (11.5°C) and 37.4°F (3°C). During the transition into November, Charlestown observes a decrease in the average high-temperature, falling from an enjoyable 66.2°F (19°C) in October to a fresh 52.7°F (11.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Charlestown, Indiana, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 43.9°F (6.6°C). A subtle shift in Charlestown's weather is observed as November turns into December, with the average high temperature reducing from a fresh 52.7°F (11.5°C) to a frosty 43.9°F (6.6°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Charlestown?

In Charlestown, January is known for its average lowest temperatures, reaching a high of 38.5°F (3.6°C) and a low of 25.2°F (-3.8°C).

How many days does it rain in Charlestown?

Throughout the year, in Charlestown, Indiana, there are 159.1 rainfall days, and 27.13" (689mm) of precipitation is accumulated.

When does it snow in Charlestown?

Months with snowfall in Charlestown, Indiana, are January through April, November and December.

How much does it snow in Charlestown?

In Charlestown, Indiana, during the entire year, snow falls for 28.2 days and aggregates up to 6.85" (174mm) of snow.

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

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the most humid month in Charlestown?

The months with the highest humidity in Charlestown are February and December, with an average relative humidity of 80%.

When does it snow the most in Charlestown?

The month with the most snowfall in Charlestown, Indiana, is February, when snow falls for 7.6 days and typically aggregates up to 1.77" (45mm) of snow.

When is Daylight Saving Time (DST) in Charlestown?

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 wettest month in Charlestown?

April is the month with the most rainfall in Charlestown, Indiana. Rain falls for 15 days and accumulates 2.99" (76mm) of precipitation.

When it does not snow in Charlestown?

In Charlestown, snow does not fall in May through October.

When are the longest days in Charlestown?

June has the longest days of the year, with an average of 14h and 48min of daylight.

What are the months with the most sunshine in Charlestown?

The months with the most sunshine in Charlestown, Indiana, are June and July, with an average of 10.3h of sunshine.

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

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

What part of the year is the hottest in Charlestown?

Charlestown's warmest month, July, registers temperatures that range from a high of 86.5°F (30.3°C) to a low of 66.9°F (19.4°C).

What are the least humid months in Charlestown?

The months with the lowest humidity are August through October, with an average relative humidity of 74%.

What is the driest month in Charlestown?

September is the month with the least rainfall. Rain falls for 13.3 days and accumulates 1.54" (39mm) of precipitation.

What is the month with the shortest days in Charlestown?

With an average of 9h and 30min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Charlestown?

The month with the least sunshine in Charlestown is December, with an average of 4.3h of sunshine.

Average temperature
Charlestown, IN

Average temperature - Charlestown, IN

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.5°F).

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure
Charlestown, IN

Average pressure - Charlestown, IN

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Charlestown, IN

Average wind speed - Charlestown, IN

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity
Charlestown, IN

Average humidity - Charlestown, IN

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August, September and October (74%).

Average rainfall
Charlestown, IN

Average rainfall - Charlestown, IN

The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days
Charlestown, IN

Average rainfall days - Charlestown, IN

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is November (9.8 days).

Average snowfall
Charlestown, IN

Average snowfall - Charlestown, IN

The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Charlestown, IN

Average snowfall days - Charlestown, IN

The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Charlestown, IN

Average daylight / Average sunshine - Charlestown, IN

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

Average sunshine days
Charlestown, IN

Average sunshine days - Charlestown, IN

The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is May (11.4 days).

Average UV index
Charlestown, IN

Average UV index - Charlestown, IN

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Charlestown, IN

Average visibility - Charlestown, IN

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

Charlestown, Indiana, USA

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