January weather forecast
Portis, KS

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Weather in January

January, like December, in Portis, Kansas, is a wintry winter month, with an average temperature varying between 39.9°F (4.4°C) and 23.9°F (-4.5°C).

Temperature

January, having an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 23.9°F (-4.5°C), is the coldest month.

Humidity

January and December, with an average relative humidity of 69%, are the most humid months in Portis.

Rainfall

January is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.59" (15mm) of precipitation.

Snowfall

Months with snowfall in Portis are January through May, October through December. In Portis, in January, during 4.9 snowfall days, 1.69" (43mm) of snow is typically accumulated. In Portis, during the entire year, snow falls for 22.6 days and aggregates up to 8.5" (216mm) of snow.

Daylight

The average length of the day in January is 9h and 45min.
On the first day of the month, sunrise is at 7:55 am and sunset at 5:21 pm. On the last day of January, sunrise is at 7:43 am and sunset at 5:53 pm CST.

Sunshine

In January, the average sunshine in Portis is 6.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 2 in January translates into the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Boost your sun resistance with garments that are densely woven yet spacious. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

January, with average temperatures reaching a high of 39.9°F (4.4°C) and a low of 23.9°F (-4.5°C), is the coldest month.

Is January cold?

The average high-temperature, in January, in Portis, is 39.9°F (4.4°C), while the average low-temperature is 23.9°F (-4.5°C).

What is the most humid month?

January and December, with an average relative humidity of 69%, are most humid months.

What is the average humidity in January in Portis?

In January, the average relative humidity is 69%.

What is the driest month in Portis?

January is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.59" (15mm) of precipitation.

How many days does it rain in January?

In Portis, during January, the rain falls for 3.8 days and regularly aggregates up to 0.59" (15mm) of precipitation.

How many days does it snow in January?

In January, it is snowing for 4.9 days. Throughout January, 1.69" (43mm) of snow is accumulated.

What is the average length of the day in January?

In January, the average day length in Portis is 9h and 45min.

When are sunrise and sunset in January?

On the first day of January in Portis, sunrise is at 7:55 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:53 pm CST.

How many hours of sunshine does Portis have in January?

In January, the average sunshine duration is 6.1h.

When is the lowest UV index?

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

What is the UV index intensity in January?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Portis, KS

Average temperature in January - Portis, KS
  • Average high temperature in January: 39.9°F

The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in January: 23.9°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in January
Portis, KS

Average pressure in January - Portis, KS
  • Average pressure in January: 30.17"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in January
Portis, KS

Average wind speed in January - Portis, KS
  • Average wind speed in January: 10.1mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

Average humidity in January
Portis, KS

Average humidity in January - Portis, KS
  • Average humidity in January: 69%

The months with the highest relative humidity are January and December (69%).
The month with the lowest relative humidity is July (57%).

Average rainfall in January
Portis, KS

Average rainfall in January - Portis, KS
  • Average rainfall in January: 0.59"

The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in January
Portis, KS

Average rainfall days in January - Portis, KS
  • Average rainfall days in January: 3.8 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in January
Portis, KS

Average snowfall in January - Portis, KS
  • Average snowfall in January: 1.69"

The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Portis, KS

Average snowfall days in January - Portis, KS
  • Average snowfall days in January: 4.9 days

The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Portis, KS

Average daylight in January / Average sunshine in January - Portis, KS
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 6h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in January
Portis, KS

Average sunshine days in January - Portis, KS
  • Average sunshine days in January: 22.6 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is May (13.5 days).

Average UV index in January
Portis, KS

Average UV index in January - Portis, KS
  • Average UV index in January: 2

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

Average cloud cover in January
Portis, KS

Average cloud cover in January - Portis, KS
  • Average cloud cover in January: 33

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 21).

Average visibility in January
Portis, KS

Average visibility in January - Portis, KS
  • Average visibility in January: 6mi

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

Portis, Kansas, USA

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