January weather forecast
Rio Vista, MD

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Weather in January

January, the same as December, is an icy winter month in Rio Vista, Maryland, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 40.5°F (4.7°C).

Temperature

In Rio Vista, January records the lowest average temperatures, peaking at 40.5°F (4.7°C) and reaching a low of 30°F (-1.1°C).

Humidity

January and November, with an average relative humidity of 73%, are the least humid months in Rio Vista.

Rainfall

January is the month with the least rainfall. Rain falls for 8.8 days and accumulates 1.93" (49mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In January, it is snowing for 3.2 days. Throughout January, 0.94" (24mm) of snow is accumulated. Throughout the year, in Rio Vista, there are 9.8 snowfall days, and 3.82" (97mm) of snow is accumulated.

Daylight

In January, the average length of the day in Rio Vista is 9h and 49min.
On the first day of January, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:24 pm EST.

Sunshine

The average sunshine in January in Rio Vista is 5.4h.

UV index

The months with the lowest UV index in Rio Vista 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 average individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What part of the year is the coldest in Rio Vista?

With average high temperatures of 40.5°F (4.7°C) and lows of 30°F (-1.1°C), January is the coldest month in Rio Vista, Maryland.

How cold is January in Rio Vista?

During January, Rio Vista experiences an average high-temperature of 40.5°F (4.7°C) and a low-temperature of 30°F (-1.1°C).

What are the least humid months in Rio Vista?

January and November, with an average relative humidity of 73%, are the least humid months in Rio Vista, Maryland.

What is the average humidity in January in Rio Vista?

In Rio Vista, Maryland, the average relative humidity in January is 73%.

What is the driest month in Rio Vista?

January is the month with the least rainfall in Rio Vista, Maryland. Rain falls for 8.8 days and accumulates 1.93" (49mm) of precipitation.

How much does it rain in Rio Vista in January?

In January, the rain falls for 8.8 days. Throughout January, 1.93" (49mm) of precipitation is accumulated.

How much does it snow in Rio Vista in January?

In Rio Vista, during January, snow falls for 3.2 days and regularly aggregates up to 0.94" (24mm) of snow.

What is the average length of the day in January in Rio Vista?

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

When is the sunrise / sunset in January in Rio Vista?

On the first day of January, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:24 pm EST.

How many hours of sunshine does Rio Vista have in January?

In Rio Vista, the average sunshine duration in January is 5.4h.

When is the lowest UV index in Rio Vista?

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

What is the UV index intensity in January in Rio Vista?

In January, the average daily maximum UV index in Rio Vista, Maryland, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
46.2°F 7.9°C
40.5°F 4.7°C
43.9°F 6.6°C
Average low temperature
36.5°F 2.5°C
30°F -1.1°C
32°F 0°C
Average pressure
30.11" 765mmHg
30.1" 765mmHg
30.07" 764mmHg
Average wind speed
9.2mph 14.8km/h
10mph 16.1km/h
10.1mph 16.3km/h
Average max. wind speed
10mph 16.1km/h
10.8mph 17.4km/h
10.9mph 17.5km/h
Average wind speed gusts
15.5mph 24.9km/h
16.5mph 26.6km/h
16.9mph 27.2km/h
Average humidity
76%
73%
74%
Average rainfall
2.91" 74mm
1.93" 49mm
2.2" 56mm
Average rainfall days
11.1
8.8
9.8
Average snowfall
0.67" 17mm
0.94" 24mm
0.79" 20mm
Average snowfall days
1.6
3.2
2.7
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
5h 2min
5h 2min
5h 1min
Average sunshine days
17.7
18.2
15.3
Average UV index
2
2
3
Average cloud cover
43%
42%
43%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Rio Vista, MD

Average temperature in January - Rio Vista, MD
  • Average high temperature in January: 40.5°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in January: 30°F

The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (30°F).

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Average pressure in January
Rio Vista, MD

Average pressure in January - Rio Vista, MD
  • Average pressure in January: 30.1"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Rio Vista, MD

Average wind speed in January - Rio Vista, MD
  • Average wind speed in January: 10mph

The windiest months (with the highest average wind speed) are February and March (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in January
Rio Vista, MD

Average humidity in January - Rio Vista, MD
  • Average humidity in January: 73%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (73%).

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Average rainfall in January
Rio Vista, MD

Average rainfall in January - Rio Vista, MD
  • Average rainfall in January: 1.93"

The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is January (1.93").

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Average rainfall days in January
Rio Vista, MD

Average rainfall days in January - Rio Vista, MD
  • Average rainfall days in January: 8.8 days

The month with the highest number of rainy days is May (17.2 days).
The months with the least rainy days are January and November (8.8 days).

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Average snowfall in January
Rio Vista, MD

Average snowfall in January - Rio Vista, MD
  • Average snowfall in January: 0.94"

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

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Average snowfall days in January
Rio Vista, MD

Average snowfall days in January - Rio Vista, MD
  • Average snowfall days in January: 3.2 days

The month with the highest number of snowfall days is January (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Rio Vista, MD

Average daylight in January / Average sunshine in January - Rio Vista, MD
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

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Average sunshine days in January
Rio Vista, MD

Average sunshine days in January - Rio Vista, MD
  • Average sunshine days in January: 18.2 days

The month with the most sunshine days is November (19.7 days).
The months with the least sunshine days are May and August (11.8 days).

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Average UV index in January
Rio Vista, MD

Average UV index in January - Rio Vista, 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 and December (UV index 2).

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Average cloud cover in January
Rio Vista, MD

Average cloud cover in January - Rio Vista, MD
  • Average cloud cover in January: 42

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in January
Rio Vista, MD

Average visibility in January - Rio Vista, 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).

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Rio Vista, Maryland, USA

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