Glendale climate

Name: Glendale
Address: US

Glendale is warmest in August, with average highs of 32 °C, and coldest in December, when nights average 6.7 °C. February is the wettest month (94 mm) and August the driest (0.8 mm). Figures are 1991–2020 climate normals.

Across a full year Glendale averages 395 mm of rain, 176 days above 25 °C and 1 days below freezing.

United States · 159 m elevation · population 201,020 · 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 August 32 °C
Coldest month December 6.7 °C
Driest month August 1 mm
Wettest month February 94 mm
Least cloud August 12 % cloud
Hottest on record July 45 °C
Coldest on record January -1.7 °C

What to expectGlendale through the year

Glendale has a clear annual cycle: average daily highs run from 19 °C in December to 32 °C in August, a swing of 13 °C in mean temperature across the year.

Counted across a normal year, 176 days a year reach 25 °C, 80 of them reach 30 °C, 1 nights drop below freezing. The warmest reading in the 1991–2020 record is 45 °C, in July.

Rain is strongly seasonal. February averages 94 mm against 1 mm in August — 122 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	18.8 °C	87 mm	46 %
February	19.2 °C	94 mm	47 %
March	20.7 °C	65 mm	45 %
April	23.1 °C	26 mm	37 %
May	24.9 °C	12 mm	33 %
June	27.6 °C	3 mm	20 %
July	30.6 °C	3 mm	17 %
August	31.8 °C	1 mm	12 %
September	30.7 °C	4 mm	16 %
October	26.9 °C	18 mm	24 %
November	22.6 °C	23 mm	33 %
December	18.5 °C	59 mm	41 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	18.8 °C	6.8 °C	11.8 °C	31.9 °C	-1.7 °C	2	0
February	19.2 °C	7.2 °C	12.3 °C	31.9 °C	-0.9 °C	4	0
March	20.7 °C	8.4 °C	13.8 °C	33.8 °C	-0.4 °C	6	1
April	23.1 °C	9.8 °C	15.8 °C	37.3 °C	1.6 °C	11	3
May	24.9 °C	12.2 °C	18.0 °C	39.0 °C	6.1 °C	13	4
June	27.6 °C	14.5 °C	20.5 °C	42.4 °C	7.5 °C	22	7
July	30.6 °C	17.3 °C	23.4 °C	45.4 °C	12.5 °C	30	17
August	31.8 °C	18.1 °C	24.3 °C	42.4 °C	12.6 °C	31	21
September	30.7 °C	16.9 °C	23.0 °C	45.2 °C	10.8 °C	27	16
October	26.9 °C	13.7 °C	19.5 °C	40.8 °C	5.7 °C	19	9
November	22.6 °C	9.8 °C	15.2 °C	35.1 °C	0.7 °C	9	2
December	18.5 °C	6.7 °C	11.6 °C	28.8 °C	-1.2 °C	2	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	87 mm	6	10 h/day	46 %	63 %	12 km/h
February	94 mm	7	11 h/day	47 %	66 %	12 km/h
March	65 mm	7	12 h/day	45 %	68 %	13 km/h
April	26 mm	4	13 h/day	37 %	62 %	14 km/h
May	12 mm	2	14 h/day	33 %	63 %	13 km/h
June	3 mm	1	14 h/day	20 %	61 %	13 km/h
July	3 mm	1	14 h/day	17 %	59 %	12 km/h
August	1 mm	0	13 h/day	12 %	56 %	12 km/h
September	4 mm	1	12 h/day	16 %	57 %	12 km/h
October	18 mm	2	11 h/day	24 %	56 %	12 km/h
November	23 mm	3	10 h/day	33 %	55 %	11 km/h
December	59 mm	5	9.9 h/day	41 %	60 %	12 km/h

Where Glendale ranks

Ranking	Position	Value
Places with the best weather in North America in April	6thof 50	95/100
Places with the best weather in North America in November	7thof 50	96/100
Places with the best weather in North America in May	8thof 50	95/100
Places with the best weather in North America year-round	9thof 50	88/100
The driest places in North America in August	11thof 50	0.8 mm
The driest places in North America in September	21stof 50	4.2 mm

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

QuestionsCommon questions about Glendale’s climate

When is the best time to visit Glendale?

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

How hot does Glendale get?

In August, the warmest month, daily highs average 32 °C. About 80 days a year pass 30 °C. The highest value in the 1991–2020 record is 45 °C.

How cold does it get in winter?

Nights average 6.7 °C in December, the coldest month. A normal year has 1 nights below freezing.

Which month is wettest in Glendale?

February, averaging 94 mm over 7 days with rain. The driest month is August with 1 mm. The year as a whole averages 395 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 Glendale 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.