Average January Weather in Delaware

Typical temperatures, precipitation, snowfall, humidity and sunshine during January at cities and towns throughout Delaware are listed below.

Temperatures in Delaware for January

This table gives the averages in degrees Fahrenheit and Celsius for maximum and minimum monthly temperatures. These normal temperatures are based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

Average January temperatures

High °F	Low °F	Place	High °C	Low °C
44	28	Dover	7	-2
45	29	Georgetown	7	-2
44	25	Greenwood	6	-4
46	30	Lewes	8	-1
43	25	Newark	6	-4
41	26	Wilmington	5	-4

Precipitation in Delaware for January

Here are the January averages for rainfall plus snowfall in Delaware. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation, based on the weather during 1991 to 2020. The calculation of days only includes those when precipitation totalled 0.01 inches (0.25 millimetres) or more.

Average precipitation in January

Days	Place	Inches	Milli­metres
10	Dover	3.4	87
9	Georgetown	3.0	76
9	Greenwood	3.6	92
11	Lewes	3.4	86
9	Newark	3.4	87
11	Wilmington	3.2	82

Snowfall in Delaware for January

Listed here are the totals for amount of snow and how many days it snows at least 0.1 inches (0.25 centimetres) in Delaware. The numbers are this month's averages of snowfall measurements made during 1991 to 2020.

Average total snowfall in January

Days	Place	Inches	Centi­metres
1.8	Dover	4.1	10.4
1.6	Greenwood	3.3	8.4
0.9	Lewes	2.0	5.1
3.5	Wilmington	6.1	15.5

Sunshine in Delaware for January

In the table below, the average number of Sunny Days in Delaware is the total days this month when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours.

Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime. The rest of the days during January are mainly overcast, with at least 80% cloud cover. Total Days With Sun is a sum of the Sunny plus Partly Sunny days.These numbers are averages of most the years the weather station has operated.

Days of sunshine in January

City	Sunny	Partly Sunny	Total Days With Sun
Wilmington	7	7	14

Humidity in Delaware

In the table below, the Daily number is the average of relative humidity readings taken every three hours throughout the day. Morning percentages are for 7 am and Afternoon levels are for 4 pm local standard time. All the humidity numbers are averages for the years 1961 to 1990.

Average January humidity (%)

Daily	City	Morning	Afternoon
68	Wilmington	74	58