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 snowfall 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
Rubidoux's January reports an average high-temperature of a still enjoyable 65.3°F (18.5°C), exhibiting a minor difference from December. The average low-temperature, in January, is a frosty 47.3°F (8.5°C).Humidity
In January, the average relative humidity in Rubidoux is 49%.Rainfall
In January, in Rubidoux, California, the rain falls for 5.2 days. Throughout January, 1.1" (28mm) of precipitation is accumulated. In Rubidoux, during the entire year, the rain falls for 49 days and collects up to 7.32" (186mm) of precipitation.Snowfall
In Rubidoux, California, snow does not fall in January, March through December.Daylight
In January, the average length of the day is 10h and 12min.On the first day of January, sunrise is at 6:55 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 5:18 pm PST.
Sunshine
In January, the average sunshine is 6.9h.UV index
In Rubidoux, the average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 4 in January translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What is the average humidity in January?
How many days does it rain in January?
When it does not snow?
Does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Rubidoux, CA
- Average high temperature in January: 65.3°F
The warmest month (with the highest average high temperature) is August (91.2°F).
The month with the lowest average high temperature is December (63.3°F).
- Average low temperature in January: 47.3°F
The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (45.9°F).
Average pressure in January
Rubidoux, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in January
Rubidoux, CA
- Average wind speed in January: 5.2mph
The windiest month (with the highest average wind speed) is May (5.6mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in January
Rubidoux, CA
- Average humidity in January: 49%
The month with the highest relative humidity is May (56%).
The month with the lowest relative humidity is August (43%).
Average rainfall in January
Rubidoux, CA
- Average rainfall in January: 1.1"
The wettest months (with the highest rainfall) are February and December (1.61").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Rubidoux, CA
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1.1 days).
Average snowfall days in January
Rubidoux, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Rubidoux, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 48min).
Average sunshine days in January
Rubidoux, CA
- Average sunshine days in January: 25 days
The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in January
Rubidoux, CA
- Average UV index in January: 4
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Rubidoux, CA
- Average cloud cover in January: 21
The months with the most cloud cover are February and March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in January
Rubidoux, 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).
Rubidoux, California, USA
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