Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January ushers in an average high-temperature of a still moderate 57.7°F (14.3°C), aligning closely with the preceding month. During the nights in January, Riverdale Park experiences a consistent average temperature of 41.9°F (5.5°C).Humidity
With an average relative humidity of 72%, January is the most humid month in Riverdale Park.Rainfall
In Riverdale Park, California, during January, the rain falls for 5.9 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, in Riverdale Park, there are 54.3 rainfall days, and 6.54" (166mm) of precipitation is accumulated.Daylight
The average length of the day in January in Riverdale Park is 9h and 55min.On the first day of the month, sunrise is at 7:19 am and sunset at 4:56 pm. On the last day of January, in Riverdale Park, sunrise is at 7:08 am and sunset at 5:26 pm PST.
Sunshine
The average sunshine in January is 6.3h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 3 in January leads to these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What is the temperature in January in Riverdale Park?
What is the most humid month in Riverdale Park?
What is the average humidity in January in Riverdale Park?
How much does it rain in Riverdale Park in January?
What is the average length of the day in January in Riverdale Park?
When is the sunrise / sunset in January in Riverdale Park?
How many hours of sunshine does Riverdale Park have in January?
What is the month with the lowest UV index in Riverdale Park?
How high is the UV index in January in Riverdale Park?
Average temperature in January
Riverdale Park, CA
- Average high temperature in January: 57.7°F
The warmest month (with the highest average high temperature) is July (97.7°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in January: 41.9°F
The month with the highest average low temperature is July (62.1°F).
The coldest months (with the lowest average low temperature) are January and December (41.9°F).
Average pressure in January
Riverdale Park, CA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Riverdale Park, CA
- Average wind speed in January: 5.3mph
The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.2mph).
Average humidity in January
Riverdale Park, CA
- Average humidity in January: 72%
The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).
Average rainfall in January
Riverdale Park, CA
- Average rainfall in January: 0.75"
The wettest month (with the highest rainfall) is March (1.3").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Riverdale Park, CA
- Average rainfall days in January: 5.9 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in January /
Average sunshine in January
Riverdale Park, CA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 6h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in January
Riverdale Park, CA
- Average sunshine days in January: 24.1 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (19.6 days).
Average UV index in January
Riverdale Park, CA
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Riverdale Park, CA
- Average cloud cover in January: 30
The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Riverdale Park, CA
- 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).
Riverdale Park, California, USA
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