January weather forecast
Plano, TX

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Weather in January

Suffused in the chilliness of winter, January in Plano, Texas delivers fluctuating temperatures which dance from 38.7°F (3.7°C) to 54°F (12.2°C). Constantly at the mercy of cold fronts sweeping in from the north, variations in temperatures are frequent. However, the city receives a significant amount of cloud cover, with humidity factors ensuring foggy mornings. The start of the year is often ushered in with less rainfall contributing to dry, crisp weather. While snow is a rarity, winter may nod with an occasional, thin blanket which dissolves swiftly.

Temperature

In Plano, the month of January is known for its lowest average temperatures, reaching a high of 54°F (12.2°C) and a low of 38.7°F (3.7°C).

Humidity

In Plano, the average relative humidity in January is 66%.

Rainfall

January is the month with the least rainfall. Rain falls for 7.1 days and accumulates 1.85" (47mm) of precipitation.

Snowfall

Months with snowfall are January, February, November and December. In Plano, during January, snow falls for 0.6 days and regularly aggregates up to 0.2" (5mm) of snow. In Plano, Texas, during the entire year, snow falls for 2.9 days and aggregates up to 1.14" (29mm) of snow.

Daylight

In January, the average length of the day is 10h and 16min.
On the first day of the month, sunrise is at 7:29 am and sunset at 5:30 pm. On the last day of January, in Plano, sunrise is at 7:22 am and sunset at 5:57 pm CST.

Sunshine

In Plano, the average sunshine in January is 5.8h.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 3 in January translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What month is the coldest in Plano?

January, marked by an average high-temperature of 54°F (12.2°C) and a low-temperature of 38.7°F (3.7°C), is the coldest month in Plano.

What is the temperature in January in Plano?

The high-temperature during January is 54°F (12.2°C) and the low-temperature is 38.7°F (3.7°C).

What is the average humidity in January in Plano?

In January, the average relative humidity in Plano is 66%.

What is the driest month in Plano?

January is the month with the least rainfall in Plano, Texas. Rain falls for 7.1 days and accumulates 1.85" (47mm) of precipitation.

How much does it rain in Plano in January?

In Plano, Texas, in January, it is raining for 7.1 days, with typically 1.85" (47mm) of accumulated precipitation.

How much does it snow in Plano in January?

In January, it is snowing for 0.6 days. Throughout January, 0.2" (5mm) of snow is accumulated.

How many hours of daylight does Plano have in January?

The average day length in January in Plano is 10h and 16min.

When are sunrise and sunset in January in Plano?

In January, on the first day of the month, sunrise is at 7:29 am and sunset at 5:30 pm. On the last day of the month, in Plano, sunrise is at 7:22 am and sunset at 5:57 pm CST.

How many hours of sunshine does Plano have in January?

In Plano, Texas, the average sunshine duration in January is 5.8h.

What is the month with the lowest UV index in Plano?

The months with the lowest UV index in Plano are January and December, with an average maximum UV index of 3.

How high is the UV index in January in Plano?

In Plano, Texas, the average daily maximum UV index in January is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
54.9°F 12.7°C
54°F 12.2°C
57.4°F 14.1°C
Average low temperature
41.2°F 5.1°C
38.7°F 3.7°C
42.1°F 5.6°C
Average pressure
30.13" 765mmHg
30.16" 766mmHg
30.09" 764mmHg
Average wind speed
8.6mph 13.8km/h
9.1mph 14.6km/h
9.8mph 15.8km/h
Average max. wind speed
9.2mph 14.8km/h
9.8mph 15.8km/h
10.4mph 16.7km/h
Average wind speed gusts
13.8mph 22.2km/h
14.8mph 23.8km/h
15.2mph 24.5km/h
Average humidity
70%
66%
71%
Average rainfall
2.2" 56mm
1.85" 47mm
1.89" 48mm
Average rainfall days
9.6
7.1
10.5
Average snowfall
0.12" 3mm
0.2" 5mm
0.71" 18mm
Average snowfall days
0.4
0.6
1.3
Average daylight
10h 0min
10h 2min
11h 0min
Average sunshine
5h 3min
5h 5min
6h 4min
Average sunshine days
19.4
22.5
15.6
Average UV index
3
3
4
Average cloud cover
38%
31%
41%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Plano, TX

Average temperature in January - Plano, TX
  • Average high temperature in January: 54°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (54°F).

  • Average low temperature in January: 38.7°F

The month with the highest average low temperature is July (76.1°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).

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Average pressure in January
Plano, TX

Average pressure in January - Plano, TX
  • 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 (29.91"Hg).

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Average wind speed in January
Plano, TX

Average wind speed in January - Plano, TX
  • Average wind speed in January: 9.1mph

The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).

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Average humidity in January
Plano, TX

Average humidity in January - Plano, TX
  • Average humidity in January: 66%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (56%).

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Average rainfall in January
Plano, TX

Average rainfall in January - Plano, TX
  • Average rainfall in January: 1.85"

The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in January
Plano, TX

Average rainfall days in January - Plano, TX
  • Average rainfall days in January: 7.1 days

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in January
Plano, TX

Average snowfall in January - Plano, TX
  • Average snowfall in January: 0.2"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in January
Plano, TX

Average snowfall days in January - Plano, TX
  • Average snowfall days in January: 0.6 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Plano, TX

Average daylight in January / Average sunshine in January - Plano, TX
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 5h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in January
Plano, TX

Average sunshine days in January - Plano, TX
  • Average sunshine days in January: 22.5 days

The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is April (13.9 days).

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Average UV index in January
Plano, TX

Average UV index in January - Plano, TX
  • Average UV index in January: 3

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in January
Plano, TX

Average cloud cover in January - Plano, TX
  • Average cloud cover in January: 31

The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in January
Plano, TX

Average visibility in January - Plano, TX
  • 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).

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Plano, Texas, USA

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