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's beginning signals an average high-temperature of a still moderate 57.7°F (14.3°C), barely different from December's 56.3°F (13.5°C). The low-temperature in Boulder Creek averages to a frosty 47.3°F (8.5°C) during the nights of January.Humidity
In January, the average relative humidity is 73%.Rainfall
In Boulder Creek, during January, the rain falls for 9.8 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, in Boulder Creek, there are 74.2 rainfall days, and 13.82" (351mm) of precipitation is accumulated.Daylight
In Boulder Creek, the average length of the day in January is 9h and 58min.On the first day of January in Boulder Creek, sunrise is at 7:22 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:31 pm PST.
Sunshine
The average sunshine in January in Boulder Creek is 6.3h.UV index
In Boulder Creek, the average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 4 in January translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What is the average January temperature in Boulder Creek?
What is the average humidity in January in Boulder Creek?
How many days does it rain in January in Boulder Creek?
How many hours of daylight does Boulder Creek have in January?
When are sunrise and sunset in January in Boulder Creek?
How many hours of sunshine does Boulder Creek have in January?
What is the UV index intensity in January in Boulder Creek?
Average temperature in January
Boulder Creek, CA
- Average high temperature in January: 57.7°F
The warmest month (with the highest average high temperature) is August (72.9°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in January: 47.3°F
The month with the highest average low temperature is September (56.3°F).
The coldest month (with the lowest average low temperature) is February (46.4°F).
Average pressure in January
Boulder Creek, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in January
Boulder Creek, CA
- Average wind speed in January: 6mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in January
Boulder Creek, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (76%).
The months with the lowest relative humidity are October and November (69%).
Average rainfall in January
Boulder Creek, CA
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is February (2.64").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in January
Boulder Creek, CA
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is March (13.3 days).
The months with the least rainy days are June and August (1.4 days).
Average daylight in January /
Average sunshine in January
Boulder Creek, CA
- Average daylight in January: 10h and 0min
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 42min).
- Average sunshine in January: 6h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in January
Boulder Creek, CA
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is March (16.6 days).
Average UV index in January
Boulder Creek, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in January
Boulder Creek, CA
- Average cloud cover in January: 31
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in January
Boulder Creek, 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).
Boulder Creek, California, USA
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