Fresno climate

Name: Fresno
Address: US

Fresno is warmest in July, with average highs of 37 °C, and coldest in December, when nights average 4.3 °C. January is the wettest month (84 mm) and August the driest (0.4 mm). Figures are 1991–2020 climate normals.

Across a full year Fresno averages 416 mm of rain, 186 days above 25 °C and 4 days below freezing.

United States · 94 m elevation · population 542,107 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 37 °C
Coldest month December 4.3 °C
Driest month August 0 mm
Wettest month January 84 mm
Least cloud August 10 % cloud
Hottest on record September 46 °C
Coldest on record December -3.6 °C

What to expectFresno through the year

Fresno has a clear annual cycle: average daily highs run from 14 °C in December to 37 °C in July, a swing of 21 °C in mean temperature across the year.

Counted across a normal year, 186 days a year reach 25 °C, 135 of them reach 30 °C, 4 nights drop below freezing. The warmest reading in the 1991–2020 record is 46 °C, in September.

Rain is strongly seasonal. January averages 84 mm against 0 mm in August — 219 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	14.9 °C	84 mm	55 %
February	17.0 °C	73 mm	52 %
March	20.2 °C	73 mm	47 %
April	24.0 °C	34 mm	38 %
May	29.1 °C	17 mm	29 %
June	34.1 °C	5 mm	16 %
July	37.1 °C	1 mm	11 %
August	36.5 °C	under 1 mm	10 %
September	33.4 °C	2 mm	11 %
October	26.9 °C	21 mm	22 %
November	19.5 °C	36 mm	39 %
December	14.5 °C	70 mm	51 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	14.9 °C	4.3 °C	8.8 °C	24.9 °C	-3.5 °C	0	0	2
February	17.0 °C	5.7 °C	10.6 °C	28.0 °C	-2.0 °C	0	0	1
March	20.2 °C	7.9 °C	13.3 °C	32.9 °C	0.1 °C	4	0	0
April	24.0 °C	10.2 °C	16.5 °C	36.7 °C	1.2 °C	12	4	0
May	29.1 °C	14.2 °C	21.3 °C	42.4 °C	6.0 °C	25	13	0
June	34.1 °C	18.1 °C	25.9 °C	43.9 °C	9.2 °C	29	25	0
July	37.1 °C	21.5 °C	29.2 °C	44.9 °C	14.2 °C	31	31	0
August	36.5 °C	20.9 °C	28.5 °C	45.7 °C	14.9 °C	31	31	0
September	33.4 °C	18.1 °C	25.3 °C	46.2 °C	11.4 °C	29	25	0
October	26.9 °C	13.1 °C	19.4 °C	39.0 °C	4.3 °C	22	7	0
November	19.5 °C	7.8 °C	12.9 °C	31.5 °C	-0.5 °C	3	0	0
December	14.5 °C	4.3 °C	8.6 °C	23.8 °C	-3.6 °C	0	0	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	84 mm	7	9.9 h/day	55 %	79 %	11 km/h
February	73 mm	8	11 h/day	52 %	75 %	12 km/h
March	73 mm	7	12 h/day	47 %	68 %	13 km/h
April	34 mm	5	13 h/day	38 %	55 %	14 km/h
May	17 mm	3	14 h/day	29 %	44 %	14 km/h
June	5 mm	1	15 h/day	16 %	36 %	14 km/h
July	1 mm	0	14 h/day	11 %	34 %	13 km/h
August	under 1 mm	0	14 h/day	10 %	36 %	13 km/h
September	2 mm	0	12 h/day	11 %	40 %	12 km/h
October	21 mm	2	11 h/day	22 %	50 %	11 km/h
November	36 mm	4	10 h/day	39 %	65 %	11 km/h
December	70 mm	7	9.7 h/day	51 %	75 %	11 km/h

How Fresno compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Fresno	37 °C	4.3 °C	416 mm	186
Modesto · United States	36 °C	5.0 °C	454 mm	176
Bakersfield · United States	36 °C	4.1 °C	265 mm	185
Salinas · United States	24 °C	6.1 °C	468 mm	39
Stockton · United States	34 °C	4.9 °C	510 mm	167
San Jose · United States	29 °C	6.4 °C	627 mm	122

Where Fresno ranks

Ranking	Position	Value
Places with the best weather in North America in April	2ndof 50	96/100
The driest places in North America in September	4thof 50	1.8 mm
The driest places in North America in August	5thof 50	0.4 mm
The warmest places in North America in August	12thof 50	36 °C
The warmest places in North America in July	12thof 50	37 °C
The warmest places in North America in September	13thof 50	33 °C

Planning a trip? See the best time to visit Fresno.

QuestionsCommon questions about Fresno’s climate

When is the best time to visit Fresno?

That depends on what you want, so the honest answer is a comparison rather than a single month. April, May, October sit closest to 20 °C on average, July is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does Fresno get?

In July, the warmest month, daily highs average 37 °C. About 135 days a year pass 30 °C. The highest value in the 1991–2020 record is 46 °C.

How cold does it get in winter?

Nights average 4.3 °C in December, the coldest month. A normal year has 4 nights below freezing.

Which month is wettest in Fresno?

January, averaging 84 mm over 7 days with rain. The driest month is August with 0 mm. The year as a whole averages 416 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Fresno rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.