January weather forecast
Rexburg, ID

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The crossroads near a large lit temple in Rexburg, Idaho, with a view of the rest of the city and a colorful, cloudy sunset sky on the horizon
The crossroads near a large lit temple in Rexburg, Idaho, with a view of the rest of the city and a colorful, cloudy sunset sky on the horizon

Weather in January

Rexburg weather marks the start of the year with the coldest temperatures compared to any other month. January finds the city in a icy embrace with average high and low temperatures of 27.5°F (-2.5°C) and 12.7°F (-10.7°C) respectively. With the city still in the middle of winter, residents witness nearly half the daylight hours getting concealed by over 53% cloud cover. High humidity levels of 91% coupled with drizzling rain results in a snowfall that covers January's landscape for most days of the month. However, with February around the corner, conditions are slightly improving.

Temperature

As December turns into January, the average high-temperatures rest at a still freezing cold 27.5°F (-2.5°C), showing a minor variation from the prior month. An average nighttime temperature of 12.7°F (-10.7°C) is witnessed throughout January.

Humidity

The most humid month is January, with an average relative humidity of 91%.

Rainfall

In Rexburg, during January, the rain falls for 6.9 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 120.3 rainfall days, and 11.02" (280mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. January is the month with the most snowfall. Snow falls for 18.1 days and accumulates 8.9" (226mm) of snow.

Daylight

In Rexburg, the average length of the day in January is 9h and 22min.
On the first day of the month, sunrise is at 8:01 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:45 am and sunset at 5:35 pm MST.

Sunshine

The month with the least sunshine in Rexburg is January, with an average of 4.5h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: During January, 1 as the daily maximum UV index converts into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Frequently asked questions

How cold is January?

The high-temperature during January is 27.5°F (-2.5°C) and the low-temperature is 12.7°F (-10.7°C).

What is the most humid month in Rexburg?

January is the most humid month, with an average relative humidity of 91%.

What is the average humidity in January?

In January, the average relative humidity is 91%.

How much does it rain in January?

In Rexburg, in January, it is raining for 6.9 days, with typically 1.1" (28mm) of accumulated precipitation.

What is the snowiest month?

The month with the most snowfall in Rexburg is January, when snow falls for 18.1 days and typically aggregates up to 8.9" (226mm) of snow.

How many days does it snow in January?

In Rexburg, in January, during 18.1 snowfall days, 8.9" (226mm) of snow is typically accumulated.

How many hours of daylight does Rexburg have in January?

In Rexburg, the average day length in January is 9h and 22min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 8:01 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:35 pm MST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 4.5h of sunshine.

How many hours of sunshine does Rexburg have in January?

In January, the average sunshine duration is 4.5h.

What is the month with the lowest UV index?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
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
Rexburg, ID

Average temperature in January - Rexburg, ID
  • Average high temperature in January: 27.5°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is December (26.6°F).

  • Average low temperature in January: 12.7°F

The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).

Average pressure in January
Rexburg, ID

Average pressure in January - Rexburg, ID
  • Average pressure in January: 30.29"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in January
Rexburg, ID

Average wind speed in January - Rexburg, ID
  • Average wind speed in January: 4.3mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).

Average humidity in January
Rexburg, ID

Average humidity in January - Rexburg, ID
  • Average humidity in January: 91%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (38%).

Average rainfall in January
Rexburg, ID

Average rainfall in January - Rexburg, ID
  • Average rainfall in January: 1.1"

The wettest months (with the highest rainfall) are April and May (1.26").
The driest month (with the least rainfall) is July (0.39").

Average rainfall days in January
Rexburg, ID

Average rainfall days in January - Rexburg, ID
  • Average rainfall days in January: 6.9 days

The month with the highest number of rainy days is April (14.9 days).
The month with the least rainy days is July (6.3 days).

Average snowfall in January
Rexburg, ID

Average snowfall in January - Rexburg, ID
  • Average snowfall in January: 8.9"

The month with the highest snowfall is January (8.9").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Rexburg, ID

Average snowfall days in January - Rexburg, ID
  • Average snowfall days in January: 18.1 days

The months with the highest number of snowfall days are January and February (18.1 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in January /
Average sunshine in January
Rexburg, ID

Average daylight in January / Average sunshine in January - Rexburg, ID
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 4h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in January
Rexburg, ID

Average sunshine days in January - Rexburg, ID
  • Average sunshine days in January: 12.7 days

The month with the most sunshine days is July (20.6 days).
The month with the least sunshine days is February (8.8 days).

Average UV index in January
Rexburg, ID

Average UV index in January - Rexburg, ID
  • Average UV index in January: 1

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

Average cloud cover in January
Rexburg, ID

Average cloud cover in January - Rexburg, ID
  • Average cloud cover in January: 53

The months with the most cloud cover are January and February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 11).

Average visibility in January
Rexburg, ID

Average visibility in January - Rexburg, ID
  • Average visibility in January: 4mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

Rexburg, Idaho, USA

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