Climate and monthly weather forecast
Thomaston, IN

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Weather in January

January, like December, is a freezing cold winter month in Thomaston, Indiana, with an average temperature varying between 18.9°F (-7.3°C) and 30°F (-1.1°C). January, on average, is the coldest month, registering a high temperature of 30°F (-1.1°C) and a low of 18.9°F (-7.3°C). Weather in January »

Weather in February

February, the last month of the winter in Thomaston, is a cold month, with an average temperature ranging between max 33.4°F (0.8°C) and min 21.6°F (-5.8°C). Transitioning into February, Thomaston records an average high-temperature of a wintry 33.4°F (0.8°C), almost identical to January's 30°F (-1.1°C). Weather in February »

Weather in March

March, the first month of the spring in Thomaston, is a frosty month, with temperature in the range of an average high of 45.9°F (7.7°C) and an average low of 31.6°F (-0.2°C). Thomaston's transition into March is marked by a rise in the average high-temperature, advancing from a cold 33.4°F (0.8°C) in February to a frosty 45.9°F (7.7°C). Weather in March »

Weather in April

April is a mild spring month in Thomaston, Indiana, with an average temperature varying between 41.5°F (5.3°C) and 57°F (13.9°C). April's onset witnesses a shift in the average high-temperature, moving from a chilly 45.9°F (7.7°C) in March to a moderate 57°F (13.9°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Thomaston, Indiana, with an average temperature varying between 68.9°F (20.5°C) and 52.3°F (11.3°C). In Thomaston, the onset of May comes with an increased average high-temperature, moving from April's moderate 57°F (13.9°C) to an agreeable 68.9°F (20.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Thomaston, Indiana, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 77.5°F (25.3°C). The shift into June is marked by a modest rise in the average high-temperature, moving from May's pleasant 68.9°F (20.5°C) to a warm 77.5°F (25.3°C). Weather in June »

Weather in July

July, like June, in Thomaston, Indiana, is another warm summer month, with an average temperature fluctuating between 63°F (17.2°C) and 79.9°F (26.6°C). July proves to be the warmest month, recording an average peak temperature of 79.9°F (26.6°C) and a minimum temperature of 63°F (17.2°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Thomaston, Indiana, with temperature in the range of an average low of 61.5°F (16.4°C) and an average high of 78.6°F (25.9°C). The arrival of August records an average high-temperature of a still moderately hot 78.6°F (25.9°C), closely related to the 79.9°F (26.6°C) observed in July. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Thomaston, Indiana, with an average temperature varying between 56.3°F (13.5°C) and 73.4°F (23°C). Thomaston transitions into September recording an average high-temperature of a still warm 73.4°F (23°C), closely aligning with the preceding month's temperature. Weather in September »

Weather in October

October, like September, in Thomaston, Indiana, is another comfortable autumn month, with temperature in the range of an average high of 61°F (16.1°C) and an average low of 45.9°F (7.7°C). The onset of October brings a small change in high-temperatures, falling from a moderately hot 73.4°F (23°C) in September to an enjoyable 61°F (16.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Thomaston, is another chilly month, with temperature in the range of an average high of 46.9°F (8.3°C) and an average low of 34.7°F (1.5°C). Thomaston's progression into November involves a drop in the average high-temperature, receding from an enjoyable 61°F (16.1°C) in October to a chilly 46.9°F (8.3°C). Weather in November »

Weather in December

December, the first month of the winter in Thomaston, is also a wintry month, with an average temperature ranging between min 26.4°F (-3.1°C) and max 35.6°F (2°C). Thomaston's average high-temperature decreases in December, falling from a frosty 46.9°F (8.3°C) in November to an icy 35.6°F (2°C). Weather in December »
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

The coldest time of the year is January, with temperatures averaging a high of 30°F (-1.1°C) and a low of 18.9°F (-7.3°C).

What are the most humid months?

January, February and July, with an average relative humidity of 84%, are most humid months.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 6.7 days and typically collects 1.34" (34mm) of precipitation.

How many days does it rain?

Throughout the year, there are 154.3 rainfall days, and 26.69" (678mm) of precipitation is accumulated.

When does it snow?

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

How much does it snow?

In Thomaston, during the entire year, snow falls for 52.4 days and aggregates up to 15.83" (402mm) of snow.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.2h of sunshine.

When is the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 12.2 days and accumulates 4.21" (107mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What is the rainiest month?

The month with the most rainfall is June, when the rain falls for 16.8 days and typically aggregates up to 3.46" (88mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

The month with the longest days is June, with an average of 15h and 6min of daylight.

What is the month with the highest UV index?

June is the month with the highest UV index, with an average maximum UV index of 6.

What is the warmest month?

July stands out as Thomaston's warmest month, with temperatures ranging between an average high of 79.9°F (26.6°C) and a low of 63°F (17.2°C).

What month has the most sunshine?

With an average of 9.8h of sunshine, July has the most sunshine of the year.

What is the least humid month?

With an average relative humidity of 75%, October is the least humid month.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

Average temperature
Thomaston, IN

Average temperature - Thomaston, IN

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (30°F).

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure
Thomaston, IN

Average pressure - Thomaston, IN

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Thomaston, IN

Average wind speed - Thomaston, IN

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity
Thomaston, IN

Average humidity - Thomaston, IN

The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (75%).

Average rainfall
Thomaston, IN

Average rainfall - Thomaston, IN

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (1.34").

Average rainfall days
Thomaston, IN

Average rainfall days - Thomaston, IN

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (6.7 days).

Average snowfall
Thomaston, IN

Average snowfall - Thomaston, IN

The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Thomaston, IN

Average snowfall days - Thomaston, IN

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Thomaston, IN

Average daylight / Average sunshine - Thomaston, IN

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days
Thomaston, IN

Average sunshine days - Thomaston, IN

The month with the most sunshine days is November (15 days).
The month with the least sunshine days is April (10.5 days).

Average visibility
Thomaston, IN

Average visibility - Thomaston, IN

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

Thomaston, Indiana, USA

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