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 welcomes an average high-temperature of a still moderate 57.7°F (14.3°C), not much different from the preceding month. Throughout January, the temperature tends to fall to a consistent average low of 47.3°F (8.5°C).Humidity
In Boulder Creek, the average relative humidity in January is 73%.Rainfall
In January, the rain falls for 9.8 days. Throughout January, 2.4" (61mm) of precipitation is accumulated. In Boulder Creek, during the entire year, the rain falls for 74.2 days and collects up to 13.82" (351mm) of precipitation.Daylight
In January, the average length of the day is 9h and 58min.On the first day of January, 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 is 6.3h.UV index
In January, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: During January, 4 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How much does it rain 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 in Boulder Creek?
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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