January weather forecast
Letha, ID

Weather in January

January, like December, in Letha, Idaho, is another cold winter month, with average temperature fluctuating between 36.1°F (2.3°C) and 23.5°F (-4.7°C).

Temperature

In January, the average high-temperature is almost the same as in December - a still wintry 36.1°F (2.3°C). In Letha, in January, the average low-temperature is 23.5°F (-4.7°C).

Humidity

January is the most humid month, with an average relative humidity of 82%.

Rainfall

In January, in Letha, the rain falls for 8.6 days. Throughout January, 1.38" (35mm) of precipitation is accumulated. Throughout the year, in Letha, there are 91.7 rainfall days, and 10.28" (261mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Letha. In Letha, during 5.5 snowfall days, 3.43" (87mm) of snow is typically accumulated. In Letha, during the entire year, snow falls for 22.2 days, and aggregates up to 12.95" (329mm) of snow.

Daylight

In January, the average length of the day is 9.4h.

Sunshine

The average sunshine in Letha is 5.4h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the most humid month in Letha?

With an average relative humidity of 82%, January is the most humid month in Letha.

What is the average humidity in January in Letha?

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

How much does it rain in Letha in January?

In Letha, Idaho, in January, during 8.6 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

How much does it snow in Letha in January?

In January, it is snowing for 5.5 days. Throughout January, 3.43" (87mm) of snow is accumulated.

How many hours of daylight does Letha have in January?

The average length of the day in January in Letha, Idaho, is 9.4h.

How long on average sun shines in January in Letha?

The average sunshine in January in Letha is 5.4h.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Letha.

What is the UV index intensity in January in Letha?

The average daily maximum UV index in January in Letha, Idaho, is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in January
Letha, ID

Average temperature in January - Letha, ID
  • Average high temperature in January: 36.1°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (34.9°F).

  • Average low temperature in January: 23.5°F

The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (22.8°F).

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Average pressure in January
Letha, ID

Average pressure in January - Letha, ID
  • Average pressure in January: 30.24"

The month with the highest atmospheric pressure is January (30.24").
Months with the lowest atmospheric pressure are June and August (29.91").

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Average wind speed in January
Letha, ID

Average wind speed in January - Letha, ID
  • Average wind speed in January: 4.2mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

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Average humidity in January
Letha, ID

Average humidity in January - Letha, ID
  • Average humidity in January: 82%

The month with the highest relative humidity is January (82%).
Months with the lowest relative humidity are July and August (31%).

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Average rainfall in January
Letha, ID

Average rainfall in January - Letha, ID
  • Average rainfall in January: 1.38"

The wettest month (with the highest rainfall) is March (1.54").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in January
Letha, ID

Average rainfall days in January - Letha, ID
  • Average rainfall days in January: 8.6 days

The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (3.2 days).

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Average snowfall in January
Letha, ID

Average snowfall in January - Letha, ID
  • Average snowfall in January: 3.43"

The month with the highest snowfall is December (4.33").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Letha, ID

Average snowfall days in January - Letha, ID
  • Average snowfall days in January: 5.5 days

The month with the highest number of snowfall days is December (7.5 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Letha, ID
  • Average daylight in January: 9.4h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in January: 5.4h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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Average sunshine days in January
Letha, ID

Average sunshine days in January - Letha, ID
  • Average sunshine days in January: 18.8 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (15.3 days).

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Average UV index in January
Letha, ID

Average UV index in January - Letha, ID
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Letha, ID

Average cloud cover in January - Letha, ID
  • Average cloud cover in January: 42

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in January
Letha, ID

Average visibility in January - Letha, ID
  • Average visibility in January: 5mi

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

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