Climate and monthly weather forecastBoulder Creek, CA
Climate and monthly weather forecast
Weather in January
January, like December, is another refreshing winter month in Boulder Creek, California, with an average temperature ranging between max 57.7°F (14.3°C) and min 47.3°F (8.5°C). January welcomes an average high-temperature of a still moderate 57.7°F (14.3°C), not much different from the preceding month. Weather in January »Weather in February
February, the last month of the winter in Boulder Creek, is also a moderate month, with temperature in the range of an average high of 58.1°F (14.5°C) and an average low of 46.4°F (8°C). Boulder Creek's shift into February sets the average high-temperature at a still mild 58.1°F (14.5°C), a figure that deviates only slightly from January's 57.7°F (14.3°C). Weather in February »Weather in March
March, the first month of the spring in Boulder Creek, is still a refreshing month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 59.4°F (15.2°C). The arrival of March records an average high-temperature of a still moderate 59.4°F (15.2°C), closely related to the 58.1°F (14.5°C) observed in February. Weather in March »Weather in April
April in Boulder Creek, California, is an enjoyable spring month, with an average temperature varying between 62.4°F (16.9°C) and 48°F (8.9°C). April's beginning signals an average high-temperature of a still refreshing 62.4°F (16.9°C), barely different from March's 59.4°F (15.2°C). Weather in April »Weather in May
The last month of the spring, May, is another refreshing month in Boulder Creek, California, with temperature in the range of an average low of 50°F (10°C) and an average high of 64.2°F (17.9°C). The start of May marks an average high-temperature of a still enjoyable 64.2°F (17.9°C), hardly distinguishable from the conditions in April. Weather in May »Weather in June
June, the first month of the summer in Boulder Creek, is a pleasant month, with temperature in the range of an average high of 69.8°F (21°C) and an average low of 52.9°F (11.6°C). The onset of June brings a minor temperature shift, with the average high-temperature moving from an enjoyable 64.2°F (17.9°C) in May to an agreeable 69.8°F (21°C). Weather in June »Weather in July
July, the same as June, in Boulder Creek, California, is another pleasant summer month, with an average temperature varying between 72.3°F (22.4°C) and 54.5°F (12.5°C). The transition into July marks the average high-temperature at a still agreeable 72.3°F (22.4°C), differing minimally from June's 69.8°F (21°C). Weather in July »Weather in August
August, the last month of the summer in Boulder Creek, is another pleasant month, with an average temperature ranging between min 56.1°F (13.4°C) and max 72.9°F (22.7°C). In Boulder Creek, the month of August registers the highest temperatures, averaging 72.9°F (22.7°C) at the peak and 56.1°F (13.4°C) at the lowest. Weather in August »Weather in September
September, the first month of the autumn in Boulder Creek, is still a pleasant month, with an average temperature ranging between max 72.5°F (22.5°C) and min 56.3°F (13.5°C). The transition into September marks the average high-temperature at a still pleasant 72.5°F (22.5°C), differing minimally from August's 72.9°F (22.7°C). Weather in September »Weather in October
October, like September, is an agreeable autumn month in Boulder Creek, California, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 68.5°F (20.3°C). Boulder Creek's shift into October sets the average high-temperature at a still pleasant 68.5°F (20.3°C), a figure that deviates only slightly from September's 72.5°F (22.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another refreshing month in Boulder Creek, California, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 50.2°F (10.1°C). With November's onset, the weather reveals a slight temperature decrease, transitioning from a pleasant 68.5°F (20.3°C) in October to an enjoyable 62.4°F (16.9°C). Weather in November »Weather in December
The first month of the winter, December, is also a moderate month in Boulder Creek, California, with temperature in the range of an average high of 56.3°F (13.5°C) and an average low of 46.8°F (8.2°C). Boulder Creek witnesses the coldest weather in December, with temperatures averaging a high of 56.3°F (13.5°C) and a low of 46.8°F (8.2°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Boulder Creek, CA
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).
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
Boulder Creek, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"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
Boulder Creek, CA
- Average wind speed in January:
6mph - Average wind speed in February:
7.3mph - Average wind speed in March:
7.5mph - Average wind speed in April:
7.9mph - Average wind speed in May:
7.6mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
5.9mph - Average wind speed in October:
6mph - Average wind speed in November:
6mph - Average wind speed in December:
6.6mph
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
Boulder Creek, CA
The month with the highest relative humidity is March (76%).
The months with the lowest relative humidity are October and November (69%).
Average rainfall
Boulder Creek, CA
- Average rainfall in January:
2.4" - Average rainfall in February:
2.64" - Average rainfall in March:
2.36" - Average rainfall in April:
0.83" - Average rainfall in May:
0.63" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.08" - Average rainfall in September:
0.16" - Average rainfall in October:
0.55" - Average rainfall in November:
1.61" - Average rainfall in December:
2.44"
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
Boulder Creek, CA
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
7.6 days - Average rainfall days in May:
5 days - Average rainfall days in June:
1.4 days
- Average rainfall days in July:
1.6 days - Average rainfall days in August:
1.4 days - Average rainfall days in September:
3.2 days - Average rainfall days in October:
4.7 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
10 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 / Average sunshine
Boulder Creek, CA
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
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 18min - Average sunshine in February:
6h and 24min - Average sunshine in March:
7h and 48min - Average sunshine in April:
10h and 18min - Average sunshine in May:
10h and 42min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - Average sunshine in September:
11h and 0min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 42min - Average sunshine in December:
5h and 54min
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
Boulder Creek, CA
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
18.2 days - Average sunshine days in March:
16.6 days - Average sunshine days in April:
20.7 days - Average sunshine days in May:
23.6 days - Average sunshine days in June:
27.3 days
- Average sunshine days in July:
26.3 days - Average sunshine days in August:
24.2 days - Average sunshine days in September:
24.3 days - Average sunshine days in October:
24.3 days - Average sunshine days in November:
22 days - Average sunshine days in December:
19.6 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
Boulder Creek, CA
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
Boulder Creek, CA
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
Boulder Creek, CA
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).





