Phoenix Weather Records (USW00023104)

Record envelope, standing records and threshold days for Phoenix (USW00023104), Arizona, United States, with 78 years of record.

Key Facts for Phoenix

Phoenix (USW00023104) is a weather station in Arizona, United States at 33.29 latitude and -111.67 longitude, 412 m (1,353 ft) above sea level.
The station reports from 1949 to 2026, 78 years of record.
1,464 records set at Phoenix still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Arizona, United States, 33.29 latitude, -111.67 longitude.
Elevation: 412 m (1,353 ft).
Period of record: 1949 to 2026, 78 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

59 days at or beyond a record

The band shows the record high and record low for each calendar day at Phoenix. The lines show the 2026 daily maximum and minimum. 59 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Phoenix, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.9 C (84.0 F)	-6.7 C (19.9 F)	25.0 C (77.0 F)	-2.0 C (28.4 F)
Feb	37.0 C (98.6 F)	-4.4 C (24.1 F)	37.0 C (98.6 F)	4.0 C (39.2 F)
Mar	35.0 C (95.0 F)	-1.7 C (28.9 F)	35.0 C (95.0 F)	5.8 C (42.4 F)
Apr	37.2 C (99.0 F)	1.7 C (35.1 F)	36.0 C (96.8 F)	8.0 C (46.4 F)
May	43.3 C (109.9 F)	4.4 C (39.9 F)	40.0 C (104.0 F)	13.0 C (55.4 F)
Jun	45.6 C (114.1 F)	11.7 C (53.1 F)	45.0 C (113.0 F)	19.0 C (66.2 F)
Jul	46.7 C (116.1 F)	19.4 C (66.9 F)	46.0 C (114.8 F)	23.0 C (73.4 F)
Aug	46.0 C (114.8 F)	17.2 C (63.0 F)	46.0 C (114.8 F)	21.0 C (69.8 F)
Sep	45.0 C (113.0 F)	10.0 C (50.0 F)	40.0 C (104.0 F)	20.0 C (68.0 F)
Oct	39.4 C (102.9 F)	2.2 C (36.0 F)	38.0 C (100.4 F)	12.0 C (53.6 F)
Nov	33.3 C (91.9 F)	-5.6 C (21.9 F)	32.0 C (89.6 F)	8.0 C (46.4 F)
Dec	28.9 C (84.0 F)	-5.0 C (23.0 F)	26.0 C (78.8 F)	4.0 C (39.2 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Phoenix still stand. 2025 holds the most, with 145.

Wettest Day of Each Month

Aug: 67.1 mm (2.6 in)

The wettest day on record for each calendar month at Phoenix. The most was 67.1 mm (2.6 in) on 27 August 1951.

Record daily precipitation for each month at Phoenix
Month	Record daily precipitation (mm)	Date
Jan	29.0 mm (1.1 in)	30 January 1951
Feb	23.6 mm (0.9 in)	4 February 1958
Mar	26.2 mm (1.0 in)	22 March 1954
Apr	15.2 mm (0.6 in)	20 April 1952
May	12.2 mm (0.5 in)	5 May 1969
Jun	10.2 mm (0.4 in)	18 June 1949
Jul	44.5 mm (1.8 in)	16 July 1953
Aug	67.1 mm (2.6 in)	27 August 1951
Sep	44.7 mm (1.8 in)	5 September 1970
Oct	24.1 mm (0.9 in)	31 October 1957
Nov	35.3 mm (1.4 in)	16 November 1952
Dec	29.7 mm (1.2 in)	25 December 1959

Period of Record Coverage

1949 to 2025

17 years of record at Phoenix, 1949 to 2025. 3 years have data for under 90 percent of days and are left out of rankings: 1961, 1963, 1965.

Days with data per year at Phoenix
Year	Days with data	Share of year	Complete
1949	365	100%	Yes
1950	364	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	25	7%	No
1963	245	67%	No
1964	364	99%	Yes
1965	270	74%	No
2025	357	98%	Yes

Latest Records

No records were set at this station in the latest data.

Climate Trend

14 complete years, 1949 to 2025

One stripe for each of 14 complete years at Phoenix, 1949 to 2025. Blue stripes are years cooler than the station's own mean of 21.6 C (70.8 F); red stripes are warmer. The coolest year was 1964, at 19.6 C (67.3 F), and the warmest was 2025, at 23.6 C (74.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Phoenix as warming stripes, 1949 to 2025
Year	Annual mean temperature	Difference from the station mean
1949	21.1 C	-0.42 C
1950	22.0 C	+0.42 C
1951	21.0 C	-0.61 C
1952	21.2 C	-0.33 C
1953	21.3 C	-0.27 C
1954	22.3 C	+0.74 C
1955	20.9 C	-0.70 C
1956	21.3 C	-0.30 C
1957	21.7 C	+0.12 C
1958	22.5 C	+0.93 C
1959	22.1 C	+0.54 C
1960	21.3 C	-0.24 C
1964	19.6 C	-1.95 C
2025	23.6 C	+2.07 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1949 to 2026

Yearly extremes at Phoenix: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.7 C (116.1 F)	1958	44.4 C (111.9 F)	18
Coldest night (TNn)	-6.7 C (19.9 F)	1950	-3.6 C (25.5 F)	18
Wettest day (Rx1day)	67.1 mm (2.6 in)	1951	27.2 mm (1.1 in)	19
Wettest five days (Rx5day)	96.3 mm (3.8 in)	1951	38.4 mm (1.5 in)	18
Longest dry spell (CDD)	142 days	1960	76 days	19

Hottest day (TXx)

The hottest day of the year at Phoenix, 1949 to 2026. The record is 46.7 C (116.1 F) in 1958, marked on the chart; the median year is 44.4 C (111.9 F).

Hottest day (TXx) at Phoenix by year
Year	Hottest day (TXx)
1949	43.3 C (109.9 F)
1950	45.0 C (113.0 F)
1951	44.4 C (111.9 F)
1952	43.3 C (109.9 F)
1953	45.0 C (113.0 F)
1954	44.4 C (111.9 F)
1955	45.6 C (114.1 F)
1956	44.4 C (111.9 F)
1957	45.6 C (114.1 F)
1958	46.7 C (116.1 F)
1959	43.9 C (111.0 F)
1960	43.9 C (111.0 F)
1961	25.6 C (78.1 F)
1962	n/a
1963	42.2 C (108.0 F)
1964	42.2 C (108.0 F)
1965	43.3 C (109.9 F)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
2025	46.0 C (114.8 F)
2026	45.0 C (113.0 F)

Coldest night (TNn)

The coldest night of the year at Phoenix, 1949 to 2026. The record is -6.7 C (19.9 F) in 1950, marked on the chart; the median year is -3.6 C (25.5 F).

Coldest night (TNn) at Phoenix by year
Year	Coldest night (TNn)
1949	-5.6 C (21.9 F)
1950	-6.7 C (19.9 F)
1951	-5.0 C (23.0 F)
1952	-2.8 C (27.0 F)
1953	-4.4 C (24.1 F)
1954	-5.0 C (23.0 F)
1955	-4.4 C (24.1 F)
1956	-5.6 C (21.9 F)
1957	0.0 C (32.0 F)
1958	-1.7 C (28.9 F)
1959	-0.6 C (30.9 F)
1960	-4.4 C (24.1 F)
1961	0.0 C (32.0 F)
1962	n/a
1963	-1.7 C (28.9 F)
1964	-6.7 C (19.9 F)
1965	-2.2 C (28.0 F)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
2025	-2.0 C (28.4 F)
2026	2.0 C (35.6 F)

Wettest day (Rx1day)

The wettest day of the year at Phoenix, 1949 to 2026. The record is 67.1 mm (2.6 in) in 1951, marked on the chart; the median year is 27.2 mm (1.1 in).

Wettest day (Rx1day) at Phoenix by year
Year	Wettest day (Rx1day)
1949	27.2 mm (1.1 in)
1950	16.8 mm (0.7 in)
1951	67.1 mm (2.6 in)
1952	35.3 mm (1.4 in)
1953	44.5 mm (1.8 in)
1954	37.3 mm (1.5 in)
1955	34.5 mm (1.4 in)
1956	18.5 mm (0.7 in)
1957	24.1 mm (0.9 in)
1958	40.6 mm (1.6 in)
1959	30.2 mm (1.2 in)
1960	23.9 mm (0.9 in)
1961	0.0 mm (0.00 in)
1962	n/a
1963	16.0 mm (0.6 in)
1964	31.0 mm (1.2 in)
1965	23.1 mm (0.9 in)
1966	n/a
1967	n/a
1968	n/a
1969	15.0 mm (0.6 in)
1970	44.7 mm (1.8 in)
2025	n/a
2026	5.6 mm (0.22 in)

Wettest five days (Rx5day)

The wettest five days of the year at Phoenix, 1949 to 2026. The record is 96.3 mm (3.8 in) in 1951, marked on the chart; the median year is 38.4 mm (1.5 in).

Wettest five days (Rx5day) at Phoenix by year
Year	Wettest five days (Rx5day)
1949	27.2 mm (1.1 in)
1950	16.8 mm (0.7 in)
1951	96.3 mm (3.8 in)
1952	38.6 mm (1.5 in)
1953	52.2 mm (2.1 in)
1954	39.1 mm (1.5 in)
1955	54.1 mm (2.1 in)
1956	19.1 mm (0.8 in)
1957	48.5 mm (1.9 in)
1958	74.9 mm (2.9 in)
1959	52.3 mm (2.1 in)
1960	38.1 mm (1.5 in)
1961	2.6 mm (0.10 in)
1962	n/a
1963	21.1 mm (0.8 in)
1964	38.1 mm (1.5 in)
1965	28.2 mm (1.1 in)
1966	n/a
1967	n/a
1968	n/a
1969	22.9 mm (0.9 in)
1970	70.1 mm (2.8 in)
2025	n/a
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Phoenix, 1949 to 2026. The record is 142 days in 1960, marked on the chart; the median year is 76 days.

Longest dry spell (CDD) at Phoenix by year
Year	Longest dry spell (CDD)
1949	76 days
1950	103 days
1951	63 days
1952	48 days
1953	131 days
1954	98 days
1955	114 days
1956	87 days
1957	49 days
1958	74 days
1959	102 days
1960	142 days
1961	9 days
1962	n/a
1963	79 days
1964	111 days
1965	41 days
1966	n/a
1967	n/a
1968	n/a
1969	34 days
1970	41 days
2025	n/a
2026	1 day

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for Phoenix standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Phoenix threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).