Delano climate — normals and trends

Q: What is the climate of Delano?

Delano has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.3 °C and it receives 293 mm of precipitation per year.

Q: What is the hottest day ever recorded in Delano?

The hottest day measured in Delano between 1940 and 2025 was 16 August 2020, reaching 45.2 °C.

Q: What is the coldest day in Delano?

The coldest day measured in Delano between 1940 and 2025 was 23 December 1990, at -7.3 °C.

Q: Does it snow in Delano?

Almost never: Delano sees virtually no snow, with about 3 frost days per year.

Q: Has the climate of Delano warmed?

Yes: Delano warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Delano?

The wettest day measured in Delano between 1940 and 2025 was 5 December 1966, with 55 mm of rain in 24 hours.

Q: What was the windiest day in Delano?

The windiest day measured in Delano between 1940 and 2025 was 1 March 1983, with winds reaching 35.9 km/h.

Q: What is the warmest month in Delano?

The warmest month in Delano is July (28.8 °C on average); the coldest is January (9.2 °C).

Q: How much does it rain in Delano?

Delano receives on average 293 mm of precipitation per year, spread over about 43 rainy days.

Q: Is it sunny in Delano?

Delano gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.

Delano (United States) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 18.3 °C and it receives 293 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (28.8 °C on average) and the coldest is January (9.2 °C). Rainfall peaks in March.

Delano averages 3 frost days, 120 hot days (≥ 30 °C) and 43 rainy days per year.

Delano has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.

The number of frost days there went from about 6 to 0 per year over the period.

The hottest day of the period reached 45.2 °C (on 16 August 2020) and the coldest -7.3 °C (on 23 December 1990).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

DelanoCalifornia

coords: 35.77°, -119.25°
period: 1940–2025 · 86 yrs

BShHot semi-aridWarmest monthJulyColdest monthJanuaryWettest monthMarchDriest monthJuly

Mean daily temperature

18.3°C

Average daily high

24.6°C

Average daily low

12.8°C

Annual rainfall

293mm

Sunshine / day

11.2h

Mean relative humidity

54%

Average peak wind

10.5km/h

Seasonal range

19.6°C

Frost days (< 0 °C)

3 d/yr

Hot days (≥ 30 °C)

120 d/yr

Rainy days (≥ 1 mm)

43 d/yr

Annual snowfall

0.3 cm

Average feels-like high

24.0 °C

Average feels-like low

11.3 °C

Average peak gust

24.5 km/h

Tropical nights (≥ 20 °C)

67 d/yr

Solar radiation

19.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.4 °C

since 1940

+0.3 °C per decade · r² = 0.53 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

45.2 °C

16 August 2020

Coldest day

-7.3 °C

23 December 1990

Wettest day

55 mm

5 December 1966

Windiest day

35.9 km/h

1 March 1983

Strongest gust

82.1 km/h

4 January 1995

Hottest feels-like

48.5 °C

4 July 1991

Coldest feels-like

-11.5 °C

23 December 1990

Snowiest day

3.6 cm

25 January 1999

Sunniest day

14.0 h

23 May 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	40.9 °C22 August 2025	1.0 °C13 January 2025	19.4 °C	378 mm	134	0
2024	44.2 °C7 July 2024	1.1 °C12 January 2024	19.5 °C	366 mm	144	0
2023	43.3 °C16 July 2023	1.3 °C16 February 2023	19.4 °C	475 mm	127	0
2022	44.5 °C6 September 2022	0.5 °C25 February 2022	20.3 °C	202 mm	152	0
2021	44.3 °C11 July 2021	1.6 °C26 January 2021	20.5 °C	236 mm	147	0
2020	45.2 °C16 August 2020	-0.4 °C4 February 2020	20.2 °C	164 mm	153	2
2019	41.9 °C28 July 2019	-0.6 °C2 January 2019	19.7 °C	414 mm	132	1
2018	41.9 °C19 July 2018	1.4 °C20 February 2018	20.4 °C	264 mm	140	0
2017	42.7 °C29 August 2017	-0.2 °C22 December 2017	20.2 °C	308 mm	129	1
2016	42.4 °C29 July 2016	0.5 °C19 December 2016	20.4 °C	264 mm	142	0
2015	41.6 °C26 June 2015	-1.0 °C1 January 2015	20.3 °C	195 mm	152	4
2014	43.7 °C9 June 2014	2.0 °C1 January 2014	21.0 °C	171 mm	162	0
2013	43.2 °C4 July 2013	-2.9 °C9 December 2013	19.4 °C	91 mm	137	10
2012	40.3 °C13 August 2012	-0.1 °C17 January 2012	19.3 °C	225 mm	134	1
2011	39.9 °C27 August 2011	0.2 °C27 February 2011	17.8 °C	243 mm	107	0
2010	40.7 °C25 August 2010	0.9 °C30 November 2010	18.1 °C	490 mm	108	0
2009	41.5 °C19 July 2009	-2.0 °C9 December 2009	18.7 °C	222 mm	118	1
2008	40.7 °C21 June 2008	1.2 °C26 December 2008	18.7 °C	223 mm	123	0
2007	41.4 °C6 July 2007	-3.9 °C14 January 2007	18.8 °C	190 mm	125	7
2006	42.7 °C24 July 2006	0.4 °C30 December 2006	18.6 °C	365 mm	121	0
2005	39.3 °C17 July 2005	2.2 °C6 December 2005	18.6 °C	346 mm	95	0
2004	38.4 °C11 August 2004	-0.3 °C1 December 2004	18.5 °C	229 mm	117	1
2003	38.2 °C17 July 2003	0.5 °C28 December 2003	18.6 °C	224 mm	116	0
2002	39.3 °C12 July 2002	-1.2 °C31 January 2002	18.2 °C	194 mm	112	1
2001	39.7 °C18 August 2001	0.3 °C18 January 2001	18.7 °C	317 mm	133	0
2000	38.5 °C1 August 2000	0.6 °C6 January 2000	18.1 °C	270 mm	108	0
1999	39.2 °C12 July 1999	1.3 °C25 January 1999	17.6 °C	186 mm	104	0
1998	39.5 °C4 August 1998	-3.9 °C24 December 1998	17.0 °C	591 mm	80	8
1997	39.3 °C7 August 1997	-0.4 °C27 December 1997	18.4 °C	240 mm	110	1
1996	41.0 °C13 August 1996	1.4 °C28 February 1996	18.8 °C	428 mm	116	0
1995	39.6 °C28 July 1995	3.8 °C2 January 1995	18.5 °C	430 mm	100	0
1994	40.5 °C28 June 1994	0.7 °C20 November 1994	18.4 °C	264 mm	117	0
1993	41.7 °C2 August 1993	-1.9 °C4 January 1993	18.5 °C	425 mm	115	2
1992	42.2 °C18 August 1992	-0.8 °C27 December 1992	19.4 °C	298 mm	154	2
1991	42.8 °C4 July 1991	-0.6 °C1 December 1991	18.7 °C	287 mm	137	2
1990	41.3 °C13 July 1990	-7.3 °C23 December 1990	18.5 °C	212 mm	122	16
1989	39.6 °C6 July 1989	-2.6 °C7 February 1989	18.4 °C	151 mm	131	4
1988	41.7 °C18 July 1988	-1.4 °C30 December 1988	18.8 °C	250 mm	129	2
1987	40.4 °C4 August 1987	-2.9 °C17 January 1987	18.7 °C	342 mm	138	7
1986	39.6 °C5 August 1986	1.4 °C10 February 1986	19.0 °C	318 mm	111	0
1985	39.8 °C27 June 1985	-1.6 °C13 December 1985	18.2 °C	215 mm	111	4
1984	41.9 °C6 July 1984	0.8 °C17 December 1984	19.0 °C	210 mm	129	0
1983	40.4 °C13 July 1983	0.2 °C3 January 1983	18.6 °C	516 mm	118	0
1982	40.5 °C31 July 1982	-0.2 °C25 December 1982	17.7 °C	489 mm	103	3
1981	40.7 °C8 August 1981	1.8 °C24 December 1981	19.0 °C	284 mm	123	0
1980	41.7 °C28 July 1980	1.3 °C10 December 1980	18.0 °C	334 mm	112	0
1979	39.6 °C12 June 1979	-1.2 °C30 January 1979	18.6 °C	244 mm	127	2
1978	41.8 °C6 August 1978	-4.3 °C8 December 1978	18.3 °C	592 mm	121	4
1977	41.0 °C1 August 1977	0.8 °C20 November 1977	18.7 °C	246 mm	120	0
1976	41.9 °C28 June 1976	-2.6 °C2 January 1976	17.9 °C	261 mm	91	4
1975	41.9 °C26 July 1975	-2.5 °C29 January 1975	18.0 °C	274 mm	134	4
1974	41.3 °C25 July 1974	-2.0 °C25 December 1974	19.1 °C	295 mm	142	4
1973	41.3 °C21 June 1973	-3.1 °C6 January 1973	18.5 °C	384 mm	131	4
1972	43.7 °C15 July 1972	-2.6 °C12 December 1972	18.2 °C	150 mm	113	10
1971	41.2 °C2 August 1971	-2.2 °C5 January 1971	17.4 °C	227 mm	119	7
1970	42.0 °C4 July 1970	-1.8 °C6 January 1970	19.0 °C	249 mm	130	5
1969	38.5 °C21 July 1969	-0.8 °C30 January 1969	18.0 °C	470 mm	123	2
1968	40.7 °C5 July 1968	-3.5 °C22 December 1968	18.3 °C	241 mm	115	3
1967	40.0 °C4 July 1967	-1.2 °C14 December 1967	17.6 °C	298 mm	113	3
1966	39.2 °C15 June 1966	-0.9 °C4 January 1966	17.9 °C	230 mm	104	4
1965	37.5 °C9 August 1965	-0.3 °C24 December 1965	17.1 °C	361 mm	98	1
1964	39.8 °C13 July 1964	-1.0 °C13 January 1964	16.8 °C	294 mm	95	3
1963	37.4 °C26 September 1963	-2.8 °C13 January 1963	16.9 °C	322 mm	87	10
1962	38.5 °C19 June 1962	-1.8 °C29 December 1962	17.1 °C	270 mm	101	12
1961	42.1 °C15 June 1961	-2.4 °C7 January 1961	17.6 °C	186 mm	102	4
1960	42.1 °C19 July 1960	-2.4 °C2 January 1960	17.9 °C	291 mm	119	5
1959	39.9 °C11 July 1959	-2.0 °C4 January 1959	18.6 °C	188 mm	103	1
1958	39.3 °C11 July 1958	0.3 °C17 November 1958	18.3 °C	413 mm	117	0
1957	39.4 °C25 June 1957	-2.3 °C28 January 1957	17.3 °C	334 mm	102	6
1956	39.9 °C28 June 1956	-1.1 °C9 December 1956	16.9 °C	183 mm	109	5
1955	41.4 °C3 September 1955	-0.9 °C9 January 1955	16.8 °C	325 mm	97	3
1954	40.9 °C23 June 1954	-1.2 °C29 December 1954	17.4 °C	288 mm	100	3
1953	41.2 °C20 July 1953	-0.6 °C21 February 1953	17.3 °C	173 mm	99	2
1952	39.2 °C16 July 1952	-1.8 °C3 January 1952	17.7 °C	451 mm	118	8
1951	39.9 °C18 July 1951	-2.8 °C10 December 1951	17.9 °C	315 mm	129	6
1950	42.9 °C1 July 1950	-5.3 °C4 January 1950	18.3 °C	272 mm	110	13
1949	40.2 °C17 July 1949	-3.7 °C11 January 1949	17.1 °C	369 mm	114	29
1948	39.9 °C15 July 1948	-3.7 °C24 December 1948	17.0 °C	293 mm	99	4
1947	38.2 °C19 July 1947	-1.6 °C16 January 1947	16.6 °C	161 mm	103	6
1946	42.5 °C3 August 1946	-1.3 °C31 January 1946	17.1 °C	248 mm	123	12
1945	43.0 °C27 July 1945	-1.4 °C22 January 1945	18.0 °C	291 mm	119	4
1944	42.8 °C27 August 1944	-0.5 °C28 January 1944	17.4 °C	301 mm	122	2
1943	42.8 °C28 July 1943	-1.1 °C19 January 1943	18.6 °C	291 mm	134	3
1942	44.5 °C24 July 1942	-1.2 °C3 January 1942	18.1 °C	172 mm	130	4
1941	43.7 °C22 July 1941	0.9 °C3 January 1941	17.6 °C	351 mm	108	0
1940	43.0 °C11 August 1940	-0.4 °C14 January 1940	18.3 °C	341 mm	132	1

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

25.7 °C

+1.1 °C

Hot days (≥ 30 °C)

134 d/yr

+14

Frost days (< 0 °C)

0 d/yr

-3

Annual rainfall

378 mm

+85 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	15.7 °C	+1.2 °C	10 mm	-40 mm
Feb	18.7 °C	+2.1 °C	50 mm	-4 mm
Mar	18.8 °C	-0.2 °C	96 mm	+40 mm
Apr	23.8 °C	+1.1 °C	20 mm	-9 mm
May	29.7 °C	+2.2 °C	3 mm	-7 mm
Jun	34.6 °C	+2.2 °C	0 mm	-2 mm
Jul	36.3 °C	+0.2 °C	0 mm	-0 mm
Aug	37.4 °C	+2.2 °C	1 mm	-0 mm
Sep	33.1 °C	+1.2 °C	13 mm	+9 mm
Oct	25.0 °C	-0.8 °C	41 mm	+28 mm
Nov	19.5 °C	+0.7 °C	85 mm	+54 mm
Dec	15.1 °C	+0.5 °C	60 mm	+17 mm

The year's extremes

Hottest day

40.9 °C

22 Aug 2025

Coldest day

1.0 °C

13 Jan 2025

Wettest day

36.7 mm

14 Oct 2025

Windiest day

25.8 km/h

24 Dec 2025

Strongest gust

52.9 km/h

13 Feb 2025

Hottest feels-like

41.5 °C

10 Aug 2025

Coldest feels-like

-1.8 °C

13 Jan 2025

Sunniest day

14.0 h

23 May 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Delano?

Delano has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.3 °C and it receives 293 mm of precipitation per year.

What is the hottest day ever recorded in Delano?

The hottest day measured in Delano between 1940 and 2025 was 16 August 2020, reaching 45.2 °C.

What is the coldest day in Delano?

The coldest day measured in Delano between 1940 and 2025 was 23 December 1990, at -7.3 °C.

Does it snow in Delano?

Almost never: Delano sees virtually no snow, with about 3 frost days per year.

Has the climate of Delano warmed?

Yes: Delano warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Delano?

The wettest day measured in Delano between 1940 and 2025 was 5 December 1966, with 55 mm of rain in 24 hours.

What was the windiest day in Delano?

The windiest day measured in Delano between 1940 and 2025 was 1 March 1983, with winds reaching 35.9 km/h.

What is the warmest month in Delano?

The warmest month in Delano is July (28.8 °C on average); the coldest is January (9.2 °C).

How much does it rain in Delano?

Delano receives on average 293 mm of precipitation per year, spread over about 43 rainy days.

Is it sunny in Delano?

Delano gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.

What is the biggest single-day snowfall in Delano?

The heaviest 24-hour snowfall measured in Delano between 1940 and 2025 was 25 January 1999, with 3.6 cm.

Are there tropical nights in Delano?

Yes: Delano has on average 67 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Delano?

In Delano, between 1940 and 2025, the highest apparent temperature reached 48.5 °C on 4 July 1991, and the lowest was -11.5 °C on 23 December 1990.

Compare Delano with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Delano

Other cities — United States

All cities in United States →