January weather forecast
Plainfield, IN

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Weather in January

Throughout the month, Plainfield experiences colder weather conditions, with snow turning its landscapes into winter wonderlands. January is marked by the coldest average minimum temperatures, reaching down to 21°F (-6.1°C), making it the chilliest month in this Indiana city. Compared to February, January has slightly lower temperatures and increased snowfall. This month holds the shortest daylight duration of the year, making the cozy indoor spaces of homes and businesses particularly inviting. The calmness of winter can be felt in the reduced winds alongside the chilled air.

Temperature

January is Plainfield's coldest month, registering average high temperatures of 33.6°F (0.9°C) and lows of 21°F (-6.1°C).

Humidity

The average relative humidity in January in Plainfield is 81%.

Rainfall

In Plainfield, in January, it is raining for 9.5 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 179.9 rainfall days, and 37.17" (944mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. The month with the most snowfall in Plainfield is January, when snow falls for 11.8 days and typically aggregates up to 4.21" (107mm) of snow.

Daylight

The average length of the day in January is 9h and 44min.
On the first day of the month, sunrise is at 8:06 am and sunset at 5:31 pm. On the last day of January, in Plainfield, sunrise is at 7:54 am and sunset at 6:03 pm EST.

Sunshine

The months with the least sunshine in Plainfield, Indiana, are January and December, with an average of 4.1h of sunshine.

UV index

The months with the lowest UV index in Plainfield, Indiana, are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 2 in January translates into this advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What month is the coldest in Plainfield?

Plainfield's coldest month, January, generally records average temperatures ranging from a high of 33.6°F (0.9°C) to a low of 21°F (-6.1°C).

How cold is it in Plainfield in January?

January temperatures in Plainfield vary between a high-temperature of 33.6°F (0.9°C) and a low-temperature of 21°F (-6.1°C).

What is the average humidity in January in Plainfield?

In January, the average relative humidity in Plainfield, Indiana, is 81%.

How much does it rain in Plainfield in January?

In Plainfield, in January, it is raining for 9.5 days, with typically 2.68" (68mm) of accumulated precipitation.

What is the snowiest month in Plainfield?

January is the month with the most snowfall in Plainfield. Snow falls for 11.8 days and accumulates 4.21" (107mm) of snow.

How many days does it snow in January in Plainfield?

In Plainfield, Indiana, in January, during 11.8 snowfall days, 4.21" (107mm) of snow is typically accumulated.

How many hours of daylight does Plainfield have in January?

In January, the average day length in Plainfield, Indiana, is 9h and 44min.

When are sunrise and sunset in January in Plainfield?

In January, on the first day of the month, sunrise is at 8:06 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 6:03 pm EST.

What is the month with the least sunshine in Plainfield?

January and December, with an average of 4.1h of sunshine, are months with the least sunshine in Plainfield.

How long on average sun shines in January in Plainfield?

In January, the average sunshine duration in Plainfield, Indiana, is 4.1h.

When is the lowest UV index in Plainfield?

The months with the lowest UV index in Plainfield, Indiana, are January, February, October through December, with an average maximum UV index of 2.

How high is the UV index in January in Plainfield?

In Plainfield, Indiana, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
38.5°F 3.6°C
33.6°F 0.9°C
38.3°F 3.5°C
Average low temperature
28°F -2.2°C
21°F -6.1°C
25.2°F -3.8°C
Average pressure
30.12" 765mmHg
30.14" 766mmHg
30.1" 765mmHg
Average wind speed
9.1mph 14.6km/h
9.9mph 15.9km/h
9.9mph 15.9km/h
Average max. wind speed
9.6mph 15.4km/h
10.5mph 16.9km/h
10.5mph 16.9km/h
Average wind speed gusts
14.2mph 22.9km/h
15.3mph 24.6km/h
15.2mph 24.5km/h
Average humidity
82%
81%
81%
Average rainfall
2.72" 69mm
2.68" 68mm
2.32" 59mm
Average rainfall days
10.7
9.5
9.6
Average snowfall
3.82" 97mm
4.21" 107mm
3.39" 86mm
Average snowfall days
9
11.8
10
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
4h 1min
4h 1min
5h 1min
Average sunshine days
13.3
11.7
11
Average UV index
2
2
2
Average cloud cover
56%
59%
58%
Average visibility
5mi 8km
5mi 8km
6mi 9.7km

Average temperature in January
Plainfield, IN

Average temperature in January - Plainfield, IN
  • Average high temperature in January: 33.6°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in January: 21°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in January
Plainfield, IN

Average pressure in January - Plainfield, IN
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Plainfield, IN

Average wind speed in January - Plainfield, IN
  • Average wind speed in January: 9.9mph

The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in January
Plainfield, IN

Average humidity in January - Plainfield, IN
  • Average humidity in January: 81%

The months with the highest relative humidity are July and December (82%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in January
Plainfield, IN

Average rainfall in January - Plainfield, IN
  • Average rainfall in January: 2.68"

The wettest month (with the highest rainfall) is May (4.53").
The driest months (with the least rainfall) are February and September (2.32").

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Average rainfall days in January
Plainfield, IN

Average rainfall days in January - Plainfield, IN
  • Average rainfall days in January: 9.5 days

The month with the highest number of rainy days is May (21.6 days).
The month with the least rainy days is January (9.5 days).

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Average snowfall in January
Plainfield, IN

Average snowfall in January - Plainfield, IN
  • Average snowfall in January: 4.21"

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

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Average snowfall days in January
Plainfield, IN

Average snowfall days in January - Plainfield, IN
  • Average snowfall days in January: 11.8 days

The month with the highest number of snowfall days is January (11.8 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
Plainfield, IN

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 4h and 1min

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

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Average sunshine days in January
Plainfield, IN

Average sunshine days in January - Plainfield, IN
  • Average sunshine days in January: 11.7 days

The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (7.3 days).

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Average UV index in January
Plainfield, IN

Average UV index in January - Plainfield, IN
  • Average UV index in January: 2

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, October, November and December (UV index 2).

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Average cloud cover in January
Plainfield, IN

Average cloud cover in January - Plainfield, IN
  • Average cloud cover in January: 59

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in January
Plainfield, IN

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

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

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Plainfield, Indiana, USA

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