Ukiah Muni AP Weather Records (USW00023275)

Record envelope, standing records and threshold days for Ukiah Muni AP (USW00023275), California, United States, with 78 years of record.

Key Facts for Ukiah Muni AP

Ukiah Muni AP (USW00023275) is a weather station in California, United States at 39.13 latitude and -123.20 longitude, 184 m (603 ft) above sea level.
The station reports from 1949 to 2026, 78 years of record.
1,464 records set at Ukiah Muni AP still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: California, United States, 39.13 latitude, -123.20 longitude.
Elevation: 184 m (603 ft).
Period of record: 1949 to 2026, 78 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

23 days at or beyond a record

The band shows the record high and record low for each calendar day at Ukiah Muni AP. The lines show the 2026 daily maximum and minimum. 23 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ukiah Muni AP, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.7 C (80.1 F)	-7.1 C (19.2 F)	22.2 C (72.0 F)	-2.1 C (28.2 F)
Feb	28.9 C (84.0 F)	-4.3 C (24.3 F)	27.8 C (82.0 F)	-2.1 C (28.2 F)
Mar	32.2 C (90.0 F)	-2.7 C (27.1 F)	31.1 C (88.0 F)	1.1 C (34.0 F)
Apr	36.1 C (97.0 F)	-0.6 C (30.9 F)	31.1 C (88.0 F)	2.8 C (37.0 F)
May	41.1 C (106.0 F)	1.7 C (35.1 F)	37.8 C (100.0 F)	6.1 C (43.0 F)
Jun	43.9 C (111.0 F)	4.4 C (39.9 F)	37.8 C (100.0 F)	7.8 C (46.0 F)
Jul	47.2 C (117.0 F)	7.8 C (46.0 F)	40.6 C (105.1 F)	8.9 C (48.0 F)
Aug	43.3 C (109.9 F)	7.2 C (45.0 F)	40.0 C (104.0 F)	9.4 C (48.9 F)
Sep	47.2 C (117.0 F)	3.3 C (37.9 F)	40.0 C (104.0 F)	10.0 C (50.0 F)
Oct	41.7 C (107.1 F)	-3.3 C (26.1 F)	31.7 C (89.1 F)	5.0 C (41.0 F)
Nov	31.1 C (88.0 F)	-7.1 C (19.2 F)	26.7 C (80.1 F)	0.6 C (33.1 F)
Dec	28.9 C (84.0 F)	-7.7 C (18.1 F)	22.8 C (73.0 F)	-1.1 C (30.0 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ukiah Muni AP still stand. 2002 holds the most, with 75.

Standing records at Ukiah Muni AP by the year they were set
Year set	Standing records
1949	18
1962	6
2001	65
2002	75
2003	60
2004	43
2005	53
2006	72
2007	54
2008	75
2009	60
2010	68
2011	62
2012	52
2013	66
2014	70
2015	51
2016	39
2017	65
2018	38
2019	56
2020	56
2021	51
2022	57
2023	54
2024	51
2025	47

Wettest Day of Each Month

Oct: 126.5 mm (5.0 in)

The wettest day on record for each calendar month at Ukiah Muni AP. The most was 126.5 mm (5.0 in) on 24 October 2021.

Record daily precipitation for each month at Ukiah Muni AP
Month	Record daily precipitation (mm)	Date
Jan	78.5 mm (3.1 in)	4 January 2008
Feb	88.1 mm (3.5 in)	25 February 2019
Mar	71.4 mm (2.8 in)	27 March 2012
Apr	61.0 mm (2.4 in)	6 April 2018
May	31.0 mm (1.2 in)	18 May 2005
Jun	27.7 mm (1.1 in)	8 June 2005
Jul	3.3 mm (0.13 in)	9 July 2015
Aug	11.7 mm (0.5 in)	27 August 1954
Sep	48.0 mm (1.9 in)	18 September 2022
Oct	126.5 mm (5.0 in)	24 October 2021
Nov	93.0 mm (3.7 in)	21 November 2024
Dec	110.7 mm (4.4 in)	30 December 2005

Period of Record Coverage

1949 to 2025

27 years of record at Ukiah Muni AP, 1949 to 2025. 2 years have data for under 90 percent of days and are left out of rankings: 1949, 1962.

Days with data per year at Ukiah Muni AP
Year	Days with data	Share of year	Complete
1949	43	12%	No
1962	31	8%	No
2001	365	100%	Yes
2002	358	98%	Yes
2003	364	100%	Yes
2004	364	99%	Yes
2005	365	100%	Yes
2006	363	99%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	364	100%	Yes
2011	365	100%	Yes
2012	365	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	364	100%	Yes
2016	365	100%	Yes
2017	364	100%	Yes
2018	364	100%	Yes
2019	359	98%	Yes
2020	366	100%	Yes
2021	365	100%	Yes
2022	365	100%	Yes
2023	364	100%	Yes
2024	364	99%	Yes
2025	365	100%	Yes

Latest Records

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

Climate Trend

25 complete years, 2001 to 2025

One stripe for each of 25 complete years at Ukiah Muni AP, 2001 to 2025. Blue stripes are years cooler than the station's own mean of 15.5 C (60.0 F); red stripes are warmer. The coolest year was 2011, at 14.4 C (58.0 F), and the warmest was 2024, at 16.9 C (62.5 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Ukiah Muni AP as warming stripes, 2001 to 2025
Year	Annual mean temperature	Difference from the station mean
2001	15.3 C	-0.22 C
2002	15.2 C	-0.33 C
2003	15.3 C	-0.28 C
2004	15.2 C	-0.30 C
2005	14.9 C	-0.65 C
2006	15.0 C	-0.54 C
2007	14.7 C	-0.86 C
2008	14.8 C	-0.73 C
2009	14.9 C	-0.65 C
2010	14.5 C	-1.05 C
2011	14.4 C	-1.10 C
2012	15.1 C	-0.46 C
2013	15.3 C	-0.26 C
2014	16.8 C	+1.25 C
2015	16.4 C	+0.90 C
2016	15.8 C	+0.24 C
2017	15.8 C	+0.29 C
2018	15.7 C	+0.14 C
2019	15.8 C	+0.30 C
2020	16.5 C	+0.91 C
2021	16.4 C	+0.85 C
2022	15.9 C	+0.37 C
2023	15.5 C	-0.04 C
2024	16.9 C	+1.39 C
2025	16.3 C	+0.78 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 Ukiah Muni AP: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	47.2 C (117.0 F)	2022	42.2 C (108.0 F)	28
Coldest night (TNn)	-7.7 C (18.1 F)	2013	-3.8 C (25.1 F)	28
Wettest day (Rx1day)	126.5 mm (5.0 in)	2021	64.3 mm (2.5 in)	29
Wettest five days (Rx5day)	248.1 mm (9.8 in)	2005	139.1 mm (5.5 in)	29
Longest dry spell (CDD)	171 days	2012	105 days	29

Hottest day (TXx)

The hottest day of the year at Ukiah Muni AP, 1949 to 2026. The record is 47.2 C (117.0 F) in 2022, marked on the chart; the median year is 42.2 C (108.0 F).

Hottest day (TXx) at Ukiah Muni AP by year
Year	Hottest day (TXx)
1949	39.4 C (102.9 F)
1954	n/a
1962	32.2 C (90.0 F)
2001	41.7 C (107.1 F)
2002	43.3 C (109.9 F)
2003	42.2 C (108.0 F)
2004	40.0 C (104.0 F)
2005	41.1 C (106.0 F)
2006	44.4 C (111.9 F)
2007	42.2 C (108.0 F)
2008	43.3 C (109.9 F)
2009	42.8 C (109.0 F)
2010	42.8 C (109.0 F)
2011	42.2 C (108.0 F)
2012	41.7 C (107.1 F)
2013	44.4 C (111.9 F)
2014	42.2 C (108.0 F)
2015	42.2 C (108.0 F)
2016	41.7 C (107.1 F)
2017	43.9 C (111.0 F)
2018	42.2 C (108.0 F)
2019	41.1 C (106.0 F)
2020	45.0 C (113.0 F)
2021	43.9 C (111.0 F)
2022	47.2 C (117.0 F)
2023	42.8 C (109.0 F)
2024	47.2 C (117.0 F)
2025	40.6 C (105.1 F)
2026	42.2 C (108.0 F)

Coldest night (TNn)

The coldest night of the year at Ukiah Muni AP, 1949 to 2026. The record is -7.7 C (18.1 F) in 2013, marked on the chart; the median year is -3.8 C (25.1 F).

Coldest night (TNn) at Ukiah Muni AP by year
Year	Coldest night (TNn)
1949	-3.3 C (26.1 F)
1954	n/a
1962	4.4 C (39.9 F)
2001	-5.0 C (23.0 F)
2002	-3.9 C (25.0 F)
2003	-3.9 C (25.0 F)
2004	-5.0 C (23.0 F)
2005	-2.8 C (27.0 F)
2006	-3.8 C (25.2 F)
2007	-7.1 C (19.2 F)
2008	-4.9 C (23.2 F)
2009	-6.6 C (20.1 F)
2010	-2.7 C (27.1 F)
2011	-4.9 C (23.2 F)
2012	-6.6 C (20.1 F)
2013	-7.7 C (18.1 F)
2014	-4.9 C (23.2 F)
2015	-7.1 C (19.2 F)
2016	-4.3 C (24.3 F)
2017	-3.8 C (25.2 F)
2018	-4.9 C (23.2 F)
2019	-3.2 C (26.2 F)
2020	-3.2 C (26.2 F)
2021	-3.2 C (26.2 F)
2022	-3.2 C (26.2 F)
2023	-3.8 C (25.2 F)
2024	-2.1 C (28.2 F)
2025	-2.1 C (28.2 F)
2026	-2.8 C (27.0 F)

Wettest day (Rx1day)

The wettest day of the year at Ukiah Muni AP, 1949 to 2026. The record is 126.5 mm (5.0 in) in 2021, marked on the chart; the median year is 64.3 mm (2.5 in).

Wettest day (Rx1day) at Ukiah Muni AP by year
Year	Wettest day (Rx1day)
1949	4.1 mm (0.16 in)
1954	38.4 mm (1.5 in)
1962	80.0 mm (3.1 in)
2001	54.4 mm (2.1 in)
2002	89.2 mm (3.5 in)
2003	63.2 mm (2.5 in)
2004	60.2 mm (2.4 in)
2005	110.7 mm (4.4 in)
2006	56.6 mm (2.2 in)
2007	40.6 mm (1.6 in)
2008	78.5 mm (3.1 in)
2009	56.6 mm (2.2 in)
2010	83.1 mm (3.3 in)
2011	55.1 mm (2.2 in)
2012	71.4 mm (2.8 in)
2013	27.7 mm (1.1 in)
2014	88.1 mm (3.5 in)
2015	82.6 mm (3.3 in)
2016	66.8 mm (2.6 in)
2017	72.9 mm (2.9 in)
2018	61.0 mm (2.4 in)
2019	88.1 mm (3.5 in)
2020	27.7 mm (1.1 in)
2021	126.5 mm (5.0 in)
2022	48.0 mm (1.9 in)
2023	64.3 mm (2.5 in)
2024	93.0 mm (3.7 in)
2025	71.1 mm (2.8 in)
2026	60.2 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ukiah Muni AP, 1949 to 2026. The record is 248.1 mm (9.8 in) in 2005, marked on the chart; the median year is 139.1 mm (5.5 in).

Wettest five days (Rx5day) at Ukiah Muni AP by year
Year	Wettest five days (Rx5day)
1949	5.9 mm (0.23 in)
1954	85.8 mm (3.4 in)
1962	175.8 mm (6.9 in)
2001	95.8 mm (3.8 in)
2002	241.3 mm (9.5 in)
2003	109.2 mm (4.3 in)
2004	139.1 mm (5.5 in)
2005	248.1 mm (9.8 in)
2006	230.8 mm (9.1 in)
2007	115.0 mm (4.5 in)
2008	129.8 mm (5.1 in)
2009	108.2 mm (4.3 in)
2010	194.6 mm (7.7 in)
2011	114.3 mm (4.5 in)
2012	201.5 mm (7.9 in)
2013	34.6 mm (1.4 in)
2014	140.0 mm (5.5 in)
2015	120.0 mm (4.7 in)
2016	111.2 mm (4.4 in)
2017	183.5 mm (7.2 in)
2018	84.7 mm (3.3 in)
2019	179.6 mm (7.1 in)
2020	35.9 mm (1.4 in)
2021	168.4 mm (6.6 in)
2022	139.8 mm (5.5 in)
2023	170.0 mm (6.7 in)
2024	216.7 mm (8.5 in)
2025	154.1 mm (6.1 in)
2026	110.5 mm (4.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ukiah Muni AP, 1949 to 2026. The record is 171 days in 2012, marked on the chart; the median year is 105 days.

Longest dry spell (CDD) at Ukiah Muni AP by year
Year	Longest dry spell (CDD)
1949	24 days
1954	78 days
1962	17 days
2001	88 days
2002	169 days
2003	117 days
2004	134 days
2005	99 days
2006	100 days
2007	82 days
2008	148 days
2009	158 days
2010	106 days
2011	95 days
2012	171 days
2013	86 days
2014	143 days
2015	68 days
2016	105 days
2017	133 days
2018	128 days
2019	79 days
2020	90 days
2021	145 days
2022	104 days
2023	139 days
2024	160 days
2025	119 days
2026	96 days

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.

Frost Dates and Growing Season

25 years with a frost

Across 25 years with a frost, the median last spring frost at Ukiah Muni AP falls on 6 March and the median first autumn frost on 16 November, which leaves a median of 250 days between them.

Fitted over all years, the growing season changes by +5.2 days per decade at this station.

Frost dates and growing season at Ukiah Muni AP
Measure	Median, all years	Earliest period	Recent period (2001 to 2025)	Recent against earliest	Fitted trend
Last spring frost	6 March	n/a	6 March	n/a	-6.0 days per decade
First autumn frost	16 November	n/a	16 November	n/a	-0.9 days per decade
Growing days	250 days	n/a	250 days	n/a	+5.2 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for Ukiah Muni AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ukiah Muni AP 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 2026-10-17 (17 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).