January weather forecastGrover Beach, CA
January
Weather in January
January, like December, in Grover Beach, California, is another refreshing winter month, with an average temperature fluctuating between 63°F (17.2°C) and 47.5°F (8.6°C).Temperature
January's arrival registers an average high-temperature of a still enjoyable 63°F (17.2°C), closely aligning with the temperature of the previous month. Grover Beach anticipates an average minimum temperature of 47.5°F (8.6°C) in the month of January.Humidity
In January, the average relative humidity is 63%.Rainfall
In Grover Beach, in January, during 5.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Grover Beach, during the entire year, the rain falls for 47.6 days and collects up to 6.93" (176mm) of precipitation.Daylight
In Grover Beach, the average length of the day in January is 10h and 7min.On the first day of January, sunrise is at 7:10 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:29 pm PST.
Sunshine
In January, the average sunshine is 6.8h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high UV index of 4 in January translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Grover Beach, CA
- Average high temperature in January: 63°F
The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).
- Average low temperature in January: 47.5°F
The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in January
Grover Beach, CA
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in January
Grover Beach, CA
- Average wind speed in January: 6.2mph
The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in January
Grover Beach, CA
- Average humidity in January: 63%
The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).
Average rainfall in January
Grover Beach, CA
- Average rainfall in January: 1.22"
The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in January
Grover Beach, CA
- Average rainfall days in January: 5.5 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).
Average daylight in January /
Average sunshine in January
Grover Beach, CA
- Average daylight in January: 10h and 6min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January: 6h and 48min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in January
Grover Beach, CA
- Average sunshine days in January: 24.3 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).
Average UV index in January
Grover Beach, CA
- Average UV index in January: 4
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in January
Grover Beach, CA
- Average cloud cover in January: 23
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in January
Grover Beach, 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).
