Monterey CA Average Temperatures by Month

The numbers here tell you how hot and cold the weather usually is in Monterey, California during each month of the year.

The average high and low temperatures are listed below for Monterey, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 60, 70 or 80 °F monthly and annually in Monterey, scroll down farther. There are also counts of days with cool weather.

The first set of high and low temperatures are averages for 2009 to 2018. Everything else here is based on 1991 to 2020 weather recorded near the Monterey Pines Golf Course.

10-year temperature averages for Monterey, 2009 to 2018
High °F	Low °F		High °C	Low °C
61	44	January	16	7
60	45	February	16	7
61	46	March	16	8
62	48	April	17	9
62	50	May	17	10
65	53	June	19	11
66	54	July	19	12
67	55	August	19	13
68	55	September	20	13
68	52	October	20	11
63	47	November	17	8
59	43	December	15	6
64	49	Year	18	10

30-year temperature averages for Monterey, 1991 to 2020
High °F	Low °F		High °C	Low °C
59	43	January	15	6
60	44	February	15	7
61	46	March	16	8
62	47	April	16	9
63	50	May	17	10
65	52	June	18	11
66	54	July	19	12
67	55	August	19	13
68	54	September	20	12
67	51	October	19	10
63	46	November	17	8
58	43	December	15	6
63	49	Year	17	9

Days of Hot Weather in Monterey

Mild temperatures are the norm for Monterey. Only 11 days make it into the 80s Fahrenheit and with two of those on average reaching 90 degrees. Temperatures in the 100s F (38 °C) is not normal for this Pacific coast city.

Days per month in Monterey of at least 60, 70 or 80 °F
	60 °F 16 °C	70 °F 21 °C	80 °F 27 °C
January	18	3	0
February	16	3	0
March	21	4	1
April	20	4	1
May	25	5	1
June	28	8	1
July	31	11	1
August	31	13	1
September	30	14	2
October	29	11	3
November	24	6	1
December	17	2	0
Year	289	83	11

How Often Monterey Has Cold Temperatures

At night, the temperature in Monterey can drop into the 30s Fahrenheit (below 4 °C) during late fall, winter and early spring. But only a couple of nights a year on average reach freezing.

No matter how cold it gets at night, the days can be counted on to warm up to at least 40 degrees. In fact, typically all but one day a year at the waterfront city have highs of 50 degrees or more.

Average number of days with low temperatures of 40 and 50 °F or cooler in Monterey
	40 °F 4 °C	50 °F 10 °C
January	9	29
February	6	25
March	3	27
April	1	25
May	0	17
June	0	7
July	0	2
August	0	1
September	0	4
October	0	15
November	2	24
December	11	28
Year	33	204

Monterey Temperatures: Averages by Month

Days of Hot Weather in Monterey

How Often Monterey Has Cold Temperatures

References

More on Weather at California Beaches