Climate and monthly weather forecast
Rio, WV

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Weather in January

January, like December, in Rio, West Virginia, is an icy winter month, with an average temperature fluctuating between 36.1°F (2.3°C) and 22.5°F (-5.3°C). January is the coldest month of the year, registering average temperatures as high as 36.1°F (2.3°C) and as low as 22.5°F (-5.3°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Rio, West Virginia, with an average temperature varying between 25.2°F (-3.8°C) and 41.2°F (5.1°C). Rio signifies an average high-temperature of a still wintry 41.2°F (5.1°C) in February, closely mirroring the 36.1°F (2.3°C) of January. Weather in February »

Weather in March

March, the first month of the spring in Rio, is a chilly month, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 49.6°F (9.8°C). The start of March brings a subtle shift in the average high-temperature, edging up from February's wintry 41.2°F (5.1°C) to a frosty 49.6°F (9.8°C). Weather in March »

Weather in April

April is an enjoyable spring month in Rio, West Virginia, with an average temperature varying between 61.7°F (16.5°C) and 41.5°F (5.3°C). Rio in April experiences an increase in the average high-temperature, moving from March's chilly 49.6°F (9.8°C) to an enjoyable 61.7°F (16.5°C). Weather in April »

Weather in May

May, the last month of the spring in Rio, is a pleasant month, with an average temperature ranging between min 50.5°F (10.3°C) and max 72.1°F (22.3°C). May shows a rise in the average high-temperature, moving from April's comfortable 61.7°F (16.5°C) to an agreeable 72.1°F (22.3°C). Weather in May »

Weather in June

June, the first month of the summer in Rio, is a warm month, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 56.8°F (13.8°C). In June, the average high-temperature marginally rises from a pleasant 72.1°F (22.3°C) in May to a moderately hot 79.7°F (26.5°C). Weather in June »

Weather in July

July, like June, in Rio, West Virginia, is a moderately hot summer month, with temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 60.6°F (15.9°C). July brings the highest temperatures, with an average high of 84.7°F (29.3°C) and an average low of 60.6°F (15.9°C). During July, the heat index is computed to be a hot 93.2°F (34°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Rio, West Virginia, with an average temperature ranging between min 59°F (15°C) and max 82.2°F (27.9°C). With August's arrival, Rio notes an average high-temperature of a still moderately hot 82.2°F (27.9°C), closely following the trend of the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Rio, West Virginia, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 75.2°F (24°C). September is marked by a subtle drop in average high-temperatures, transitioning from a warm 82.2°F (27.9°C) in August to a still moderately hot 75.2°F (24°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Rio, West Virginia, with an average temperature varying between 63°F (17.2°C) and 44.4°F (6.9°C). The beginning of October involves a decrease in the average high-temperature, transitioning from a warm 75.2°F (24°C) in September to an enjoyable 63°F (17.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Rio, West Virginia, with temperature in the range of an average high of 50.9°F (10.5°C) and an average low of 34°F (1.1°C). With the beginning of November, the average high-temperature shows a decrease, transitioning from an enjoyable 63°F (17.2°C) in October to a fresh 50.9°F (10.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Rio, West Virginia, with an average temperature ranging between max 41.5°F (5.3°C) and min 29.1°F (-1.6°C). December implies a gentle temperature shift, with average high-temperatures reducing from November's fresh 50.9°F (10.5°C) to an icy 41.5°F (5.3°C). Weather in December »
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Rio?

January stands out as Rio's coldest month, with temperatures ranging between an average high of 36.1°F (2.3°C) and a low of 22.5°F (-5.3°C).

How much does it rain in Rio?

Throughout the year, in Rio, West Virginia, there are 166 rainfall days, and 25.83" (656mm) of precipitation is accumulated.

When does it snow in Rio?

January through May, October through December are months with snowfall.

How much does it snow in Rio?

In Rio, during the entire year, snow falls for 31.2 days and aggregates up to 16.5" (419mm) of snow.

What is the month with the least sunshine in Rio?

The months with the least sunshine in Rio, West Virginia, are January and December, with an average of 5.1h of sunshine.

When is the lowest UV index in Rio?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rio, West Virginia.

What is the driest month in Rio?

February and November are months with the least rain when the rain falls for 10.5 days and typically aggregates up to 1.73" (44mm) of rain.

What is the snowiest month in Rio?

The month with the most snowfall is March, when snow falls for 6.1 days and typically aggregates up to 4.21" (107mm) of snow.

When is Daylight Saving Time (DST) in Rio?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Rio?

The months with the lowest humidity in Rio, West Virginia, are April and July, with an average relative humidity of 74%.

What is the wettest month in Rio?

May is the month with the most rainfall. Rain falls for 18.4 days and accumulates 3.11" (79mm) of precipitation.

When it does not snow in Rio?

In Rio, snow does not fall in June through September.

When are the longest days in Rio?

With an average of 14h and 54min of daylight, June has the longest days of the year in Rio.

What are the months with the highest UV index in Rio?

June and July, with an average maximum UV index of 6, are months with the highest UV index.

What part of the year is the hottest in Rio?

During the warmest month in Rio, July, temperatures average a high of 84.7°F (29.3°C) and a low of 60.6°F (15.9°C).

What month has the most sunshine in Rio?

The month with the most sunshine in Rio is July, with an average of 10.7h of sunshine.

What is the most humid month in Rio?

October is the most humid month in Rio, West Virginia, with an average relative humidity of 79%.

What is the month with the shortest days in Rio?

The month with the shortest days in Rio, West Virginia, is December, with an average of 9h and 30min of daylight.

Average temperature
Rio, WV

Average temperature - Rio, WV

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.1°F).

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure
Rio, WV

Average pressure - Rio, WV

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed
Rio, WV

Average wind speed - Rio, WV

The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4mph).

Average humidity
Rio, WV

Average humidity - Rio, WV

The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April and July (74%).

Average rainfall
Rio, WV

Average rainfall - Rio, WV

The wettest month (with the highest rainfall) is May (3.11").
The driest months (with the least rainfall) are February and November (1.73").

Average rainfall days
Rio, WV

Average rainfall days - Rio, WV

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is November (9.1 days).

Average snowfall
Rio, WV

Average snowfall - Rio, WV

The month with the highest snowfall is March (4.21").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Rio, WV

Average snowfall days - Rio, WV

The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Rio, WV

Average daylight / Average sunshine - Rio, WV

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).

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

Average sunshine days
Rio, WV

Average sunshine days - Rio, WV

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (10.1 days).

Average UV index
Rio, WV

Average UV index - Rio, WV

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

Average visibility
Rio, WV

Average visibility - Rio, WV

The months with the highest visibility are April, June, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, August, September and October (5mi).

Rio, West Virginia, USA

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