January weather forecast
Holbrook, ID

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Weather in January

January, the same as December, in Holbrook, Idaho, is another subzero cold winter month, with an average temperature fluctuating between 29.5°F (-1.4°C) and 15.3°F (-9.3°C).

Temperature

At the start of January, Holbrook's average high-temperature reaches a still subzero cold 29.5°F (-1.4°C), subtly different from the preceding month. Holbrook in January experiences a low-temperature average of 15.3°F (-9.3°C).

Humidity

The most humid month in Holbrook is January, with an average relative humidity of 89%.

Rainfall

In Holbrook, in January, during 6.6 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Holbrook, during the entire year, the rain falls for 118.3 days and collects up to 16.42" (417mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. January is the month with the most snowfall in Holbrook. Snow falls for 15.8 days and accumulates 13.78" (350mm) of snow.

Daylight

The average length of the day in January is 9h and 31min.
On the first day of January in Holbrook, sunrise is at 7:59 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:43 pm MST.

Sunshine

The month with the least sunshine is January, with an average of 4.7h of sunshine.

UV index

The month with the lowest UV index in Holbrook is January, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily maximum UV index of 1 in January translates into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Holbrook in January?

The average high-temperature, in January, in Holbrook, is 29.5°F (-1.4°C), while the average low-temperature is 15.3°F (-9.3°C).

What is the most humid month in Holbrook?

The most humid month in Holbrook, Idaho, is January, with an average relative humidity of 89%.

What is the average humidity in January in Holbrook?

The average relative humidity in January in Holbrook is 89%.

How much does it rain in Holbrook in January?

In Holbrook, Idaho, in January, during 6.6 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

What is the snowiest month in Holbrook?

January is the month with the most snowfall in Holbrook, Idaho. Snow falls for 15.8 days and accumulates 13.78" (350mm) of snow.

How many days does it snow in January in Holbrook?

In Holbrook, during January, snow falls for 15.8 days and regularly aggregates up to 13.78" (350mm) of snow.

How many hours of daylight does Holbrook have in January?

In Holbrook, Idaho, the average day length in January is 9h and 31min.

What time are sunrise and sunset in January in Holbrook?

In January, on the first day of the month, sunrise is at 7:59 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:43 pm MST.

What is the month with the least sunshine in Holbrook?

The month with the least sunshine in Holbrook is January, with an average of 4.7h of sunshine.

How many hours of sunshine does Holbrook have in January?

The average sunshine duration in January is 4.7h.

When is the lowest UV index in Holbrook?

With an average maximum UV index of 1, January is the month with the lowest UV index.

What is the UV index intensity in January in Holbrook?

In Holbrook, Idaho, the average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a low health risk from 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
Holbrook, ID

Average temperature in January - Holbrook, ID
  • Average high temperature in January: 29.5°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (28.9°F).

  • Average low temperature in January: 15.3°F

The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

Average pressure in January
Holbrook, ID

Average pressure in January - Holbrook, ID
  • Average pressure in January: 30.3"Hg

The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in January
Holbrook, ID

Average wind speed in January - Holbrook, ID
  • Average wind speed in January: 4.8mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

Average humidity in January
Holbrook, ID

Average humidity in January - Holbrook, ID
  • Average humidity in January: 89%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (35%).

Average rainfall in January
Holbrook, ID

Average rainfall in January - Holbrook, ID
  • Average rainfall in January: 1.77"

The wettest month (with the highest rainfall) is February (2.05").
The driest month (with the least rainfall) is July (0.55").

Average rainfall days in January
Holbrook, ID

Average rainfall days in January - Holbrook, ID
  • Average rainfall days in January: 6.6 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.6 days).

Average snowfall in January
Holbrook, ID

Average snowfall in January - Holbrook, ID
  • Average snowfall in January: 13.78"

The month with the highest snowfall is January (13.78").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Holbrook, ID

Average snowfall days in January - Holbrook, ID
  • Average snowfall days in January: 15.8 days

The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in January / Average sunshine in January - Holbrook, ID
  • Average daylight in January: 9h and 3min

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

  • Average sunshine in January: 4h and 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in January
Holbrook, ID

Average sunshine days in January - Holbrook, ID
  • Average sunshine days in January: 14.7 days

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is February (9.9 days).

Average UV index in January
Holbrook, ID

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

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

Average cloud cover in January
Holbrook, ID

Average cloud cover in January - Holbrook, ID
  • Average cloud cover in January: 50

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 11).

Average visibility in January
Holbrook, ID

Average visibility in January - Holbrook, 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).

Holbrook, Idaho, USA

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