January weather forecast
Thayer, IA

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Weather in January

January, the same as December, in Thayer, Iowa, is a freezing cold winter month, with temperature in the range of an average high of 29.1°F (-1.6°C) and an average low of 15.8°F (-9°C).

Temperature

Thayer's January weather, with an average high temperature of 29.1°F (-1.6°C) and an average low temperature of 15.8°F (-9°C), tends to be the coldest of the year.

Humidity

In January, the average relative humidity is 82%.

Rainfall

In Thayer, in January, it is raining for 3.7 days, with typically 0.71" (18mm) of accumulated precipitation. In Thayer, during the entire year, the rain falls for 122.6 days and collects up to 20.43" (519mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 9.2 days and accumulates 3.66" (93mm) of snow.

Daylight

The average length of the day in January in Thayer is 9h and 38min.
On the first day of the month, sunrise is at 7:41 am and sunset at 4:58 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:31 pm CST.

Sunshine

The month with the least sunshine in Thayer is January, with an average of 4.3h of sunshine.

UV index

The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Experience reduced UV exposure by about half when donning a wide-brim hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Frequently asked questions

What time of the year is the coldest?

In Thayer, Iowa, the average lowest temperatures are observed in January, with a high of 29.1°F (-1.6°C) and a low of 15.8°F (-9°C).

How cold is January?

In Thayer, in January, the average high-temperature is 29.1°F (-1.6°C), and the average low-temperature is 15.8°F (-9°C).

What is the average humidity in January?

In January, the average relative humidity is 82%.

How much does it rain in January?

In January, the rain falls for 3.7 days. Throughout January, 0.71" (18mm) of precipitation is accumulated.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 9.2 days and accumulates 3.66" (93mm) of snow.

How much does it snow in January?

In Thayer, in January, snow falls for 9.2 days, with typically accumulated 3.66" (93mm) of snow.

How many hours of daylight does Thayer have in January?

In January, the average day length is 9h and 38min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:41 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:31 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 4.3h of sunshine.

How long on average sun shines in January?

The average sunshine duration in January is 4.3h.

When is the lowest UV index?

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

What is the UV index reading in January?

In January, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's 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
Thayer, IA

Average temperature in January - Thayer, IA
  • Average high temperature in January: 29.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in January: 15.8°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in January
Thayer, IA

Average pressure in January - Thayer, IA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in January
Thayer, IA

Average wind speed in January - Thayer, IA
  • Average wind speed in January: 10.7mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in January
Thayer, IA

Average humidity in January - Thayer, IA
  • Average humidity in January: 82%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Thayer, IA

Average rainfall in January - Thayer, IA
  • Average rainfall in January: 0.71"

The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is December (0.63").

Average rainfall days in January
Thayer, IA

Average rainfall days in January - Thayer, IA
  • Average rainfall days in January: 3.7 days

The months with the highest number of rainy days are May and June (16.4 days).
The months with the least rainy days are January and February (3.7 days).

Average snowfall in January
Thayer, IA

Average snowfall in January - Thayer, IA
  • Average snowfall in January: 3.66"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Thayer, IA

Average snowfall days in January - Thayer, IA
  • Average snowfall days in January: 9.2 days

The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Thayer, IA

Average daylight in January / Average sunshine in January - Thayer, IA
  • 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 18min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in January
Thayer, IA

Average sunshine days in January - Thayer, IA
  • Average sunshine days in January: 19.8 days

The month with the most sunshine days is December (21 days).
The months with the least sunshine days are May and June (11.3 days).

Average UV index in January
Thayer, IA

Average UV index in January - Thayer, IA
  • Average UV index in January: 1

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

Average cloud cover in January
Thayer, IA

Average cloud cover in January - Thayer, IA
  • Average cloud cover in January: 53

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in January
Thayer, IA

Average visibility in January - Thayer, IA
  • Average visibility in January: 6mi

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

Thayer, Iowa, USA

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