Climate and monthly weather forecastSan Gregorio, CA
Climate and monthly weather forecast
Weather in January
January, like December, is a moderate winter month in San Gregorio, California, with an average temperature fluctuating between 46.4°F (8°C) and 56.7°F (13.7°C). San Gregorio marks the onset of January with an average high-temperature of a still refreshing 56.7°F (13.7°C), subtly divergent from December's 55.8°F (13.2°C). Weather in January »Weather in February
February, the last month of the winter in San Gregorio, is also a moderate month, with an average temperature ranging between max 58.3°F (14.6°C) and min 46.4°F (8°C). San Gregorio marks the start of February with an average high-temperature of a still moderate 58.3°F (14.6°C), hinting at a slight fluctuation from January's 56.7°F (13.7°C). Weather in February »Weather in March
The first month of the spring, March, is also a moderate month in San Gregorio, California, with an average temperature ranging between max 59.5°F (15.3°C) and min 46.9°F (8.3°C). The transition from February to March brings an average high-temperature of a still mild 59.5°F (15.3°C), barely different from February's 58.3°F (14.6°C). Weather in March »Weather in April
April in San Gregorio, California, is a comfortable spring month, with an average temperature fluctuating between 48.2°F (9°C) and 62.2°F (16.8°C). April's advent denotes a minor fluctuation in the average high-temperature to a still refreshing 62.2°F (16.8°C) from March's 59.5°F (15.3°C). Weather in April »Weather in May
May, the last month of the spring in San Gregorio, is another refreshing month, with an average temperature ranging between max 64.9°F (18.3°C) and min 50.2°F (10.1°C). With the advent of May, San Gregorio's high-temperatures adjust to a still enjoyable 64.9°F (18.3°C), closely aligning with the preceding month. Weather in May »Weather in June
The first month of the summer, June, is an agreeable month in San Gregorio, California, with an average temperature fluctuating between 53.4°F (11.9°C) and 70°F (21.1°C). June's commencement is accompanied by an average high-temperature of an agreeable 70°F (21.1°C), diverging marginally from May's 64.9°F (18.3°C). Weather in June »Weather in July
July, like June, is another pleasant summer month in San Gregorio, California, with temperature in the range of an average low of 54.7°F (12.6°C) and an average high of 72.7°F (22.6°C). The introduction of July sees an average high-temperature of a still pleasant 72.7°F (22.6°C), hardly deviating from June. Weather in July »Weather in August
The last month of the summer, August, is also an agreeable month in San Gregorio, California, with temperature in the range of an average high of 73°F (22.8°C) and an average low of 56.7°F (13.7°C). San Gregorio witnesses the warmest weather in August, with temperatures averaging a high of 73°F (22.8°C) and a low of 56.7°F (13.7°C). Weather in August »Weather in September
September, the first month of the autumn in San Gregorio, is also an agreeable month, with an average temperature fluctuating between 56.7°F (13.7°C) and 72.5°F (22.5°C). September's commencement is accompanied by an average high-temperature of a still pleasant 72.5°F (22.5°C), diverging marginally from August's 73°F (22.8°C). Weather in September »Weather in October
October, like September, is an agreeable autumn month in San Gregorio, California, with an average temperature fluctuating between 68.2°F (20.1°C) and 54.9°F (12.7°C). With the onset of October, San Gregorio's average high-temperature clocks in at a still pleasant 68.2°F (20.1°C), showing a minor fluctuation from the previous month. Weather in October »Weather in November
November, the last month of the autumn in San Gregorio, is another refreshing month, with an average temperature ranging between min 50.5°F (10.3°C) and max 61.9°F (16.6°C). The transition to November results in a modest reduction in average high-temperature, moving from an agreeable 68.2°F (20.1°C) in October to a refreshing 61.9°F (16.6°C). Weather in November »Weather in December
The first month of the winter, December, is still a mild month in San Gregorio, California, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 55.8°F (13.2°C). December stands out as San Gregorio's coldest month, with temperatures ranging between an average high of 55.8°F (13.2°C) and a low of 47.1°F (8.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
San Gregorio, CA
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.8°F).
The months with the highest average low temperature are August and September (56.7°F).
The coldest months (with the lowest average low temperature) are January and February (46.4°F).
Average pressure
San Gregorio, 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:
29.98"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
San Gregorio, CA
- Average wind speed in January:
6mph - Average wind speed in February:
7.3mph - Average wind speed in March:
7.4mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.5mph - Average wind speed in September:
5.7mph - Average wind speed in October:
5.7mph - Average wind speed in November:
6mph - Average wind speed in December:
6.6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity
San Gregorio, CA
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is October (68%).
Average rainfall
San Gregorio, CA
- Average rainfall in January:
0.67" - Average rainfall in February:
0.98" - Average rainfall in March:
0.83" - Average rainfall in April:
0.24" - Average rainfall in May:
0.31" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.08" - Average rainfall in September:
0.08" - Average rainfall in October:
0.12" - Average rainfall in November:
0.55" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
San Gregorio, CA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
3.8 days - Average rainfall days in June:
0.9 days
- Average rainfall days in July:
1.5 days - Average rainfall days in August:
1 days - Average rainfall days in September:
2.4 days - Average rainfall days in October:
3.3 days - Average rainfall days in November:
4.9 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is June (0.9 days).
Average daylight / Average sunshine
San Gregorio, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - 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 36min
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 36min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
6h and 24min - Average sunshine in March:
7h and 54min - Average sunshine in April:
10h and 24min - 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
San Gregorio, CA
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
19.3 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
22.2 days - Average sunshine days in May:
22.9 days - Average sunshine days in June:
26.3 days
- Average sunshine days in July:
26.3 days - Average sunshine days in August:
24.2 days - Average sunshine days in September:
25.8 days - Average sunshine days in October:
25.4 days - Average sunshine days in November:
23.8 days - Average sunshine days in December:
20.4 days
The months with the most sunshine days are June and July (26.3 days).
The month with the least sunshine days is March (18.3 days).
Average UV index
San Gregorio, 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
San Gregorio, CA
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility
San Gregorio, 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).





