January weather forecast
Thomaston, IN

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Weather in January

January, like December, is another subzero cold winter month in Thomaston, Indiana, with an average temperature fluctuating between 30°F (-1.1°C) and 18.9°F (-7.3°C).

Temperature

The coldest period tends to be January, when average temperatures fluctuate between a high of 30°F (-1.1°C) and a low of 18.9°F (-7.3°C).

Humidity

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

Rainfall

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

Snowfall

January through May, October through December are months with snowfall. In Thomaston, during January, snow falls for 15.4 days and regularly aggregates up to 3.94" (100mm) of snow. Throughout the year, there are 52.4 snowfall days, and 15.83" (402mm) of snow is accumulated.

Daylight

In Thomaston, the average length of the day in January is 9h and 35min.
On the first day of January, sunrise is at 7:13 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:01 pm CST.

Sunshine

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

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 1 in January interprets into the following advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What are the coldest months in Thomaston?

January, with its average high-temperature of 30°F (-1.1°C) and an average low-temperature of 18.9°F (-7.3°C), holds the record as the coldest month in Thomaston, Indiana.

How cold is it in Thomaston in January?

The average high-temperature and low-temperature during January are 30°F (-1.1°C) and 18.9°F (-7.3°C) respectively.

What are the most humid months in Thomaston?

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

What is the average humidity in January in Thomaston?

In January, the average relative humidity in Thomaston, Indiana, is 84%.

What is the driest month in Thomaston?

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

How many days does it rain in January in Thomaston?

In Thomaston, in January, it is raining for 6.7 days, with typically 1.34" (34mm) of accumulated precipitation.

How much does it snow in Thomaston in January?

In Thomaston, Indiana, in January, snow falls for 15.4 days, with typically accumulated 3.94" (100mm) of snow.

What is the average length of the day in January in Thomaston?

In Thomaston, Indiana, the average day length in January is 9h and 35min.

When is the sunrise / sunset in January in Thomaston?

On the first day of January, sunrise is at 7:13 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:01 pm CST.

What is the month with the least sunshine in Thomaston?

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

How many hours of sunshine does Thomaston have in January?

The average sunshine duration in January in Thomaston, Indiana, is 3.2h.

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

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

How high is the UV index in January in Thomaston?

In January, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Thomaston, IN

Average temperature in January - Thomaston, IN
  • Average high temperature in January: 30°F

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).

  • Average low temperature in January: 18.9°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).

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Average pressure in January
Thomaston, IN

Average pressure in January - Thomaston, IN
  • Average pressure in January: 30.11"Hg

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

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Average wind speed in January
Thomaston, IN

Average wind speed in January - Thomaston, IN
  • Average wind speed in January: 10.5mph

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).

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Average humidity in January
Thomaston, IN

Average humidity in January - Thomaston, IN
  • Average humidity in January: 84%

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

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Average rainfall in January
Thomaston, IN

Average rainfall in January - Thomaston, IN
  • Average rainfall in January: 1.34"

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

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Average rainfall days in January
Thomaston, IN

Average rainfall days in January - Thomaston, IN
  • Average rainfall days in January: 6.7 days

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).

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Average snowfall in January
Thomaston, IN

Average snowfall in January - Thomaston, IN
  • Average snowfall in January: 3.94"

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

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Average snowfall days in January
Thomaston, IN

Average snowfall days in January - Thomaston, IN
  • Average snowfall days in January: 15.4 days

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).

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Average daylight in January /
Average sunshine in January
Thomaston, IN

Average daylight in January / Average sunshine in January - Thomaston, IN
  • Average daylight in January: 9h and 4min

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).

  • Average sunshine in January: 3h and 1min

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).

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Average sunshine days in January
Thomaston, IN

Average sunshine days in January - Thomaston, IN
  • Average sunshine days in January: 10.9 days

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

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Average UV index in January
Thomaston, IN

Average UV index in January - Thomaston, IN
  • Average UV index in January: 1

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in January
Thomaston, IN

Average cloud cover in January - Thomaston, IN
  • Average cloud cover in January: 67

The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 34).

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Average visibility in January
Thomaston, IN

Average visibility in January - Thomaston, IN
  • Average visibility in January: 5mi

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).

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Thomaston, Indiana, USA

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