January weather forecast
Saint Johns Green, MD

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Weather in January

January, like December, in Saint Johns Green, Maryland, is a wintry winter month, with an average temperature fluctuating between 26.2°F (-3.2°C) and 38.1°F (3.4°C).

Temperature

Saint Johns Green experiences its lowest temperatures in January, with an average peak of 38.1°F (3.4°C) and a low of 26.2°F (-3.2°C).

Humidity

In January, the average relative humidity is 73%.

Rainfall

The month with the least rainfall is January, when the rain falls for 9.7 days and typically collects 2.05" (52mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. January is the month with the most snowfall. Snow falls for 4.9 days and accumulates 2.4" (61mm) of snow.

Daylight

In Saint Johns Green, the average length of the day in January is 9h and 47min.
On the first day of the month, sunrise is at 7:26 am and sunset at 4:54 pm. On the last day of January, in Saint Johns Green, sunrise is at 7:15 am and sunset at 5:26 pm EST.

Sunshine

The average sunshine in January in Saint Johns Green is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 2 during January leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Aug 1, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

January, characterized by an average high temperature of 38.1°F (3.4°C) and a low temperature of 26.2°F (-3.2°C), is generally the coldest month.

Is January cold?

In January, the average high-temperature and low-temperature are 38.1°F (3.4°C) and 26.2°F (-3.2°C) respectively.

What is the average humidity in January?

In Saint Johns Green, the average relative humidity in January is 73%.

What is the driest month?

January is the month with the least rainfall in Saint Johns Green. Rain falls for 9.7 days and accumulates 2.05" (52mm) of precipitation.

How many days does it rain in January?

In Saint Johns Green, Maryland, during January, the rain falls for 9.7 days and regularly aggregates up to 2.05" (52mm) of precipitation.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 4.9 days and typically aggregates up to 2.4" (61mm) of snow.

How much does it snow in January?

In January, in Saint Johns Green, Maryland, it is snowing for 4.9 days. Throughout January, 2.4" (61mm) of snow is accumulated.

What is the average length of the day in January?

In January, the average day length is 9h and 47min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:26 pm EST.

How many hours of sunshine does Saint Johns Green have in January?

The average sunshine duration in January is 5.1h.

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.

How high is the UV index in January in Saint Johns Green?

In Saint Johns Green, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
44.1°F 6.7°C
38.1°F 3.4°C
42.3°F 5.7°C
Average low temperature
32.9°F 0.5°C
26.2°F -3.2°C
28.6°F -1.9°C
Average pressure
30.11" 765mmHg
30.1" 765mmHg
30.07" 764mmHg
Average wind speed
8mph 12.9km/h
8.6mph 13.8km/h
8.6mph 13.8km/h
Average max. wind speed
8.6mph 13.8km/h
9.3mph 15km/h
9.3mph 15km/h
Average wind speed gusts
12.9mph 20.8km/h
13.8mph 22.2km/h
14mph 22.5km/h
Average humidity
76%
73%
75%
Average rainfall
2.6" 66mm
2.05" 52mm
2.24" 57mm
Average rainfall days
11.8
9.7
10.3
Average snowfall
1.22" 31mm
2.4" 61mm
1.57" 40mm
Average snowfall days
2.9
4.9
4.7
Average daylight
9h 3min
9h 5min
10h 4min
Average sunshine
5h 1min
5h 1min
5h 0min
Average sunshine days
16.2
16.9
14.3
Average UV index
2
2
2
Average cloud cover
44%
44%
45%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Saint Johns Green, MD

Average temperature in January - Saint Johns Green, MD
  • Average high temperature in January: 38.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in January: 26.2°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in January
Saint Johns Green, MD

Average pressure in January - Saint Johns Green, MD
  • Average pressure in January: 30.1"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in January
Saint Johns Green, MD

Average wind speed in January - Saint Johns Green, MD
  • Average wind speed in January: 8.6mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in January
Saint Johns Green, MD

Average humidity in January - Saint Johns Green, MD
  • Average humidity in January: 73%

The months with the highest relative humidity are May and October (77%).
The month with the lowest relative humidity is July (71%).

Average rainfall in January
Saint Johns Green, MD

Average rainfall in January - Saint Johns Green, MD
  • Average rainfall in January: 2.05"

The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in January
Saint Johns Green, MD

Average rainfall days in January - Saint Johns Green, MD
  • Average rainfall days in January: 9.7 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in January
Saint Johns Green, MD

Average snowfall in January - Saint Johns Green, MD
  • Average snowfall in January: 2.4"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Saint Johns Green, MD

Average snowfall days in January - Saint Johns Green, MD
  • Average snowfall days in January: 4.9 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Saint Johns Green, MD

Average daylight in January / Average sunshine in January - Saint Johns Green, MD
  • 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 1min

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
Saint Johns Green, MD

Average sunshine days in January - Saint Johns Green, MD
  • Average sunshine days in January: 16.9 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).

Average UV index in January
Saint Johns Green, MD

Average UV index in January - Saint Johns Green, MD
  • 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, February, November and December (UV index 2).

Average cloud cover in January
Saint Johns Green, MD

Average cloud cover in January - Saint Johns Green, MD
  • Average cloud cover in January: 44

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in January
Saint Johns Green, MD

Average visibility in January - Saint Johns Green, MD
  • 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).

Saint Johns Green, Maryland, USA

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