January weather forecast
Houston, DE

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Weather in January

January, like December, in Houston, Delaware, is a wintry winter month, with an average temperature fluctuating between 40.6°F (4.8°C) and 29.7°F (-1.3°C).

Temperature

The lowest temperatures are recorded in January, with averages reaching a high of 40.6°F (4.8°C) and a low of 29.7°F (-1.3°C).

Humidity

January and November, with an average relative humidity of 74%, are the least humid months.

Rainfall

The month with the least rainfall is January, when the rain falls for 8.4 days and typically collects 1.5" (38mm) of precipitation.

Snowfall

Months with snowfall are January through March, May, November and December. January is the month with the most snowfall. Snow falls for 3.3 days and accumulates 1.22" (31mm) of snow.

Daylight

The average length of the day in January is 9h and 49min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:21 pm EST.

Sunshine

In January, the average sunshine in Houston is 5.4h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

January is the coldest month, with the temperature often reaching an average high of 40.6°F (4.8°C) and an average low of 29.7°F (-1.3°C).

How cold does it get in January?

The average high-temperature, in January, in Houston, is 40.6°F (4.8°C), while the average low-temperature is 29.7°F (-1.3°C).

What is the least humid month?

January and November, with an average relative humidity of 74%, are the least humid months.

What is the average humidity in January?

In January, the average relative humidity is 74%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 8.4 days and accumulates 1.5" (38mm) of precipitation.

How many days does it rain in January?

In Houston, in January, it is raining for 8.4 days, with typically 1.5" (38mm) of accumulated precipitation.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 3.3 days and typically aggregates up to 1.22" (31mm) of snow.

How much does it snow in January?

In January, it is snowing for 3.3 days. Throughout January, 1.22" (31mm) of snow is accumulated.

How many hours of daylight does Houston have in January?

In Houston, the average day length in January is 9h and 49min.

What time are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of the month, in Houston, Delaware, sunrise is at 7:09 am and sunset at 5:21 pm EST.

How long on average sun shines in January?

In Houston, Delaware, the average sunshine duration in January is 5.4h.

What are the months with the lowest UV index?

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

What is the UV index reading in January?

In Houston, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe 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
Houston, DE

Average temperature in January - Houston, DE
  • Average high temperature in January: 40.6°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in January: 29.7°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in January
Houston, DE

Average pressure in January - Houston, DE
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in January
Houston, DE

Average wind speed in January - Houston, DE
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is February (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in January
Houston, DE

Average humidity in January - Houston, DE
  • Average humidity in January: 74%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in January
Houston, DE

Average rainfall in January - Houston, DE
  • Average rainfall in January: 1.5"

The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is January (1.5").

Average rainfall days in January
Houston, DE

Average rainfall days in January - Houston, DE
  • Average rainfall days in January: 8.4 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in January
Houston, DE

Average snowfall in January - Houston, DE
  • Average snowfall in January: 1.22"

The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in January
Houston, DE

Average snowfall days in January - Houston, DE
  • Average snowfall days in January: 3.3 days

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Houston, DE

Average daylight in January / Average sunshine in January - Houston, DE
  • 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 30min).

  • Average sunshine in January: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in January
Houston, DE

Average sunshine days in January - Houston, DE
  • Average sunshine days in January: 19.6 days

The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is July (11.6 days).

Average UV index in January
Houston, DE

Average UV index in January - Houston, DE
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in January
Houston, DE

Average cloud cover in January - Houston, DE
  • Average cloud cover in January: 42

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in January
Houston, DE

Average visibility in January - Houston, DE
  • 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).

Houston, Delaware, USA

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