January weather forecast
Saint John, IN

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Weather in January

January, the same as December, in Saint John, Indiana, is another subzero cold winter month, with temperature in the range of an average high of 29.8°F (-1.2°C) and an average low of 18.9°F (-7.3°C).

Temperature

In Saint John, January is the coldest month, with temperatures averaging a high of 29.8°F (-1.2°C) and a low of 18.9°F (-7.3°C).

Humidity

In Saint John, the average relative humidity in January is 82%.

Rainfall

In Saint John, in January, it is raining for 5.3 days, with typically 1.02" (26mm) of accumulated precipitation. In Saint John, during the entire year, the rain falls for 143.5 days and collects up to 21.02" (534mm) of precipitation.

Snowfall

Months with snowfall in Saint John are January through April, November and December. The month with the most snowfall in Saint John is January, when snow falls for 11.7 days and typically aggregates up to 2.87" (73mm) of snow.

Daylight

In January, the average length of the day in Saint John is 9h and 35min.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:30 pm. On the last day of January, sunrise is at 7:02 am and sunset at 5:04 pm CST.

Sunshine

January has the least sunshine of the year in Saint John, with an average of 3.6h of sunshine.

UV index

The months with the lowest UV index in Saint John are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 1 during January translates into the following guidance:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What part of the year is the coldest in Saint John?

The coldest time of the year in Saint John, Indiana, is January, with temperatures averaging a high of 29.8°F (-1.2°C) and a low of 18.9°F (-7.3°C).

How cold is it in Saint John in January?

The average high-temperature, in January, in Saint John, is 29.8°F (-1.2°C), while the average low-temperature is 18.9°F (-7.3°C).

What is the average humidity in January in Saint John?

In January, the average relative humidity in Saint John is 82%.

How many days does it rain in January in Saint John?

In Saint John, during January, the rain falls for 5.3 days and regularly aggregates up to 1.02" (26mm) of precipitation.

What is the snowiest month in Saint John?

January is the month with the most snowfall in Saint John, Indiana. Snow falls for 11.7 days and accumulates 2.87" (73mm) of snow.

How many days does it snow in January in Saint John?

In Saint John, Indiana, during January, snow falls for 11.7 days and regularly aggregates up to 2.87" (73mm) of snow.

How many hours of daylight does Saint John have in January?

In January, the average day length in Saint John is 9h and 35min.

When are sunrise and sunset in January in Saint John?

In January, on the first day of the month, sunrise is at 7:16 am and sunset at 4:30 pm. On the last day of the month, in Saint John, Indiana, sunrise is at 7:02 am and sunset at 5:04 pm CST.

What is the month with the least sunshine in Saint John?

January has the least sunshine of the year in Saint John, Indiana, with an average of 3.6h of sunshine.

How long on average sun shines in January in Saint John?

The average sunshine duration in January is 3.6h.

What is the month with the lowest UV index in Saint John?

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

What is the UV index reading in January in Saint John?

In January, the average daily maximum UV index in Saint John is 1. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
36°F 2.2°C
29.8°F -1.2°C
34°F 1.1°C
Average low temperature
26.2°F -3.2°C
18.9°F -7.3°C
21.4°F -5.9°C
Average pressure
30.1" 765mmHg
30.11" 765mmHg
30.1" 765mmHg
Average wind speed
9.5mph 15.3km/h
10.2mph 16.4km/h
9.8mph 15.8km/h
Average max. wind speed
10.2mph 16.4km/h
10.8mph 17.4km/h
10.5mph 16.9km/h
Average wind speed gusts
14.9mph 24km/h
15.8mph 25.4km/h
15.5mph 24.9km/h
Average humidity
81%
82%
83%
Average rainfall
1.02" 26mm
1.02" 26mm
0.98" 25mm
Average rainfall days
7.4
5.3
5.3
Average snowfall
1.57" 40mm
2.87" 73mm
2.83" 72mm
Average snowfall days
9
11.7
10.7
Average daylight
9h 1min
9h 4min
10h 4min
Average sunshine
4h 1min
3h 4min
3h 5min
Average sunshine days
16.1
15.2
13.1
Average UV index
1
1
2
Average cloud cover
59%
62%
59%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Saint John, IN

Average temperature in January - Saint John, IN
  • Average high temperature in January: 29.8°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in January: 18.9°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in January
Saint John, IN

Average pressure in January - Saint John, 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
Saint John, IN

Average wind speed in January - Saint John, IN
  • Average wind speed in January: 10.2mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in January
Saint John, IN

Average humidity in January - Saint John, IN
  • Average humidity in January: 82%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in January
Saint John, IN

Average rainfall in January - Saint John, IN
  • Average rainfall in January: 1.02"

The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are February and November (0.98").

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Average rainfall days in January
Saint John, IN

Average rainfall days in January - Saint John, IN
  • Average rainfall days in January: 5.3 days

The month with the highest number of rainy days is July (17.6 days).
The months with the least rainy days are January and February (5.3 days).

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Average snowfall in January
Saint John, IN

Average snowfall in January - Saint John, IN
  • Average snowfall in January: 2.87"

The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Saint John, IN

Average snowfall days in January - Saint John, IN
  • Average snowfall days in January: 11.7 days

The month with the highest number of snowfall days is January (11.7 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
Saint John, IN

Average daylight in January / Average sunshine in January - Saint John, 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 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in January
Saint John, IN

Average sunshine days in January - Saint John, IN
  • Average sunshine days in January: 15.2 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (10.5 days).

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Average UV index in January
Saint John, IN

Average UV index in January - Saint John, IN
  • Average UV index in January: 1

The months with the highest UV index are June and July (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
Saint John, IN

Average cloud cover in January - Saint John, IN
  • Average cloud cover in January: 62

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Saint John, IN

Average visibility in January - Saint John, IN
  • Average visibility in January: 5mi

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

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Saint John, Indiana, USA

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