December weather forecast and climate
Riverside, OH

December, the first month of the winter, in Riverside, is also a wintry month, with average temperature varying between 28.9°F (-1.7°C) and 39°F (3.9°C).

Temperature

In December, the average high-temperature drops, from a chilly 49.1°F (9.5°C) in November, to a cold 39°F (3.9°C). The average low-temperature, in Riverside, is 28.9°F (-1.7°C).

Humidity

In December, the average relative humidity is 82%.

Rainfall

In December, the rain falls for 9.5 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, in Riverside, there are 146.7 rainfall days, and 21.81" (554mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Riverside, Ohio, in December, during 5.5 snowfall days, 1.26" (32mm) of snow is typically accumulated. Throughout the year, in Riverside, there are 27.3 snowfall days, and 7.13" (181mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9.4h of daylight.

Sunshine

In December, the average sunshine is 4h.

UV index

Months with the lowest UV index in Riverside are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Riverside?

In December, in Riverside, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 28.9°F (-1.7°C).

What is the average humidity in December in Riverside?

In Riverside, Ohio, the average relative humidity in December is 82%.

How much does it rain in Riverside in December?

In December, in Riverside, Ohio, the rain falls for 9.5 days. Throughout December, 1.57" (40mm) of precipitation is accumulated.

How much does it snow in Riverside in December?

In Riverside, Ohio, during December, snow falls for 5.5 days and regularly aggregates up to 1.26" (32mm) of snow.

What is the month with the shortest days in Riverside?

With an average of 9.4h of daylight, December has the shortest days of the year in Riverside, Ohio.

How many hours of daylight does Riverside have in December?

In December, the average length of the day is 9.4h.

How long on average sun shines in December in Riverside?

The average sunshine in December in Riverside is 4h.

What are the months with the lowest UV index in Riverside?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Riverside.

How high is the UV index in December in Riverside?

In Riverside, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.
Average temperature in December - Riverside, OH
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

Average pressure in December - Riverside, OH
  • Average pressure in December: 30.12"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in December - Riverside, OH
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in December - Riverside, OH
  • Average humidity in December: 82%

The month with the highest relative humidity is January (83%).
Months with the lowest relative humidity are October and November (75%).

Average rainfall in December - Riverside, OH
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in December - Riverside, OH
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in December - Riverside, OH
  • Average snowfall in December: 1.26"

The month with the highest snowfall is March (1.85").
Months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December - Riverside, OH
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is January (8.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Riverside, OH
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 4h

The month with the most sunshine is June (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 3.6h).

Average sunshine days in December - Riverside, OH
  • Average sunshine days in December: 16.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (9.5 days).

Average UV index in December - Riverside, OH
  • Average UV index in December: 2

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

Average cloud cover in December - Riverside, OH
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December - Riverside, OH
  • Average visibility in December: 6mi

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