Adel Weather Records (USC00350036)

Record envelope, standing records and threshold days for Adel (USC00350036), Oregon, United States, with 71 years of record.

Key Facts for Adel

Adel (USC00350036) is a weather station in Oregon, United States at 42.18 latitude and -119.90 longitude, 1,399 m (4,590 ft) above sea level.
The station reports from 1956 to 2026, 71 years of record.
1,464 records set at Adel still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Adel set a daily record high maximum temperature of 30.6 C (87.1 F) on 12 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Oregon, United States, 42.18 latitude, -119.90 longitude.
Elevation: 1,399 m (4,590 ft).
Period of record: 1956 to 2026, 71 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

20 days at or beyond a record

The band shows the record high and record low for each calendar day at Adel. The lines show the 2026 daily maximum and minimum. 20 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Adel, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.8 C (64.0 F)	-24.4 C (-11.9 F)	15.0 C (59.0 F)	-8.9 C (16.0 F)
Feb	21.7 C (71.1 F)	-31.1 C (-24.0 F)	18.3 C (64.9 F)	-8.3 C (17.1 F)
Mar	28.3 C (82.9 F)	-20.0 C (-4.0 F)	28.3 C (82.9 F)	-2.8 C (27.0 F)
Apr	31.7 C (89.1 F)	-10.6 C (12.9 F)	22.8 C (73.0 F)	-7.2 C (19.0 F)
May	36.7 C (98.1 F)	-7.8 C (18.0 F)	32.2 C (90.0 F)	-1.1 C (30.0 F)
Jun	42.2 C (108.0 F)	-1.7 C (28.9 F)	35.0 C (95.0 F)	2.2 C (36.0 F)
Jul	41.7 C (107.1 F)	1.1 C (34.0 F)	36.7 C (98.1 F)	6.7 C (44.1 F)
Aug	40.0 C (104.0 F)	-0.6 C (30.9 F)	38.3 C (100.9 F)	3.9 C (39.0 F)
Sep	38.3 C (100.9 F)	-6.7 C (19.9 F)	31.7 C (89.1 F)	1.7 C (35.1 F)
Oct	33.9 C (93.0 F)	-14.4 C (6.1 F)	31.7 C (89.1 F)	-5.6 C (21.9 F)
Nov	25.0 C (77.0 F)	-21.7 C (-7.1 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-31.1 C (-24.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Adel still stand. 1990 holds the most, with 55.

Standing records at Adel by the year they were set
Year set	Standing records
1956	26
1958	23
1959	32
1963	32
1964	35
1965	26
1966	34
1967	31
1968	34
1969	26
1970	28
1971	51
1972	44
1973	28
1974	36
1975	32
1976	30
1977	31
1978	41
1979	35
1980	29
1981	21
1982	20
1983	16
1984	15
1985	22
1986	21
1987	43
1988	39
1989	38
1990	55
1991	10
1992	14
1993	5
1994	11
1995	14
1996	12
1997	7
1998	6
1999	7
2000	14
2001	12
2002	14
2003	10
2004	3
2005	8
2006	14
2007	14
2008	21
2009	16
2010	15
2011	25
2012	12
2013	16
2014	7
2015	35
2016	15
2017	21
2018	13
2019	15
2020	24
2022	5
2023	17
2024	16
2025	24
2026	18

All-Time Record Progression

5 new records

5 all-time records were set at Adel between 6 March 1992 and 4 February 2025. Each dot is a new record.

When Adel set new all-time records
Date	Kind	Detail
1992-03-06	Record daily snowfall	Record daily snowfall 30.5 cm (12.0 in)
2009-06-04	Record daily precipitation	Record daily precipitation 44.5 mm (1.8 in)
2020-07-21	Record high minimum temperature	Record high minimum temperature 22.8 C (73.0 F)
2020-07-27	Record high minimum temperature	Record high minimum temperature 23.3 C (73.9 F)
2025-02-04	Record daily precipitation	Record daily precipitation 48.0 mm (1.9 in)

Wettest Day of Each Month

Feb: 48.0 mm (1.9 in)

The wettest day on record for each calendar month at Adel. The most was 48.0 mm (1.9 in) on 4 February 2025.

Record daily precipitation for each month at Adel
Month	Record daily precipitation (mm)	Date
Jan	30.0 mm (1.2 in)	21 January 1967
Feb	48.0 mm (1.9 in)	4 February 2025
Mar	25.7 mm (1.0 in)	12 March 1971
Apr	35.6 mm (1.4 in)	22 April 2004
May	26.4 mm (1.0 in)	11 May 1958
Jun	44.5 mm (1.8 in)	4 June 2009
Jul	42.4 mm (1.7 in)	27 July 2017
Aug	22.9 mm (0.9 in)	11 August 1965
Sep	29.7 mm (1.2 in)	16 September 1977
Oct	27.9 mm (1.1 in)	11 October 2000
Nov	20.3 mm (0.8 in)	28 November 1970
Dec	42.4 mm (1.7 in)	23 December 1964

Period of Record Coverage

1956 to 2026

67 years of record at Adel, 1956 to 2026. 48 years have data for under 90 percent of days and are left out of rankings: 1956, 1957, 1958, 1963, 1977, 1978, 1982, 1983 and others.

Days with data per year at Adel
Year	Days with data	Share of year	Complete
1956	290	79%	No
1957	64	18%	No
1958	277	76%	No
1959	357	98%	Yes
1963	224	61%	No
1964	365	100%	Yes
1965	365	100%	Yes
1966	361	99%	Yes
1967	364	100%	Yes
1968	363	99%	Yes
1969	362	99%	Yes
1970	353	97%	Yes
1971	348	95%	Yes
1972	352	96%	Yes
1973	347	95%	Yes
1974	355	97%	Yes
1975	360	99%	Yes
1976	365	100%	Yes
1977	273	75%	No
1978	299	82%	No
1979	362	99%	Yes
1980	360	98%	Yes
1981	360	99%	Yes
1982	317	87%	No
1983	315	86%	No
1984	237	65%	No
1985	171	47%	No
1986	200	55%	No
1987	313	86%	No
1988	335	92%	Yes
1989	333	91%	Yes
1990	322	88%	No
1991	159	44%	No
1992	223	61%	No
1993	95	26%	No
1994	189	52%	No
1995	175	48%	No
1996	106	29%	No
1997	183	50%	No
1998	148	41%	No
1999	223	61%	No
2000	275	75%	No
2001	266	73%	No
2002	216	59%	No
2003	277	76%	No
2004	307	84%	No
2005	303	83%	No
2006	262	72%	No
2007	296	81%	No
2008	301	82%	No
2009	227	62%	No
2010	218	60%	No
2011	234	64%	No
2012	240	66%	No
2013	199	55%	No
2014	185	51%	No
2015	228	62%	No
2016	215	59%	No
2017	230	63%	No
2018	228	62%	No
2019	171	47%	No
2020	145	40%	No
2022	110	30%	No
2023	195	53%	No
2024	278	76%	No
2025	308	84%	No
2026	267	73%	No

Latest Records

Latest records at Adel
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 October 2026	Adel, US	daily high max (Provisional)	30.6 C (87.1 F)	0.6 C (1.1 F)	11 years	10 of 100 (Routine)
11 October 2026	Adel, US	daily low min (Tie, Provisional)	-4.4 C (24.1 F)	tie	56 years	6 of 100 (Routine)
8 October 2026	Adel, US	daily high max (Tie, Provisional)	30.0 C (86.0 F)	tie	60 years	6 of 100 (Routine)
22 August 2026	Adel, US	daily high min (Provisional)	15.6 C (60.1 F)	1.2 C (2.2 F)	48 years	24 of 100 (Routine)
21 August 2026	Adel, US	daily high min (Tie, Provisional)	15.6 C (60.1 F)	tie	48 years	5 of 100 (Routine)
10 August 2026	Adel, US	daily high max	38.3 C (100.9 F)	1.6 C (2.9 F)	67 years	30 of 100 (Routine)
11 May 2026	Adel, US	daily high max	32.2 C (90.0 F)	1.6 C (2.9 F)	39 years	20 of 100 (Routine)
17 April 2026	Adel, US	daily low min	-7.2 C (19.0 F)	0.5 C (0.9 F)	53 years	24 of 100 (Routine)
16 April 2026	Adel, US	daily low min (Tie)	-6.7 C (19.9 F)	tie	51 years	5 of 100 (Routine)
2 April 2026	Adel, US	daily rain	7.6 mm (0.30 in)	5.8 mm (0.23 in)	0 years	18 of 100 (Routine)
25 March 2026	Adel, US	daily high min	9.4 C (48.9 F)	0.5 C (0.9 F)	36 years	18 of 100 (Routine)
25 March 2026	Adel, US	daily high max (Tie)	21.7 C (71.1 F)	tie	19 years	3 of 100 (Routine)
24 March 2026	Adel, US	daily high max	21.1 C (70.0 F)	0.5 C (0.9 F)	36 years	17 of 100 (Routine)
23 March 2026	Adel, US	monthly high max (Tie)	28.3 C (82.9 F)	tie	0 years	4 of 100 (Routine)
21 March 2026	Adel, US	monthly high max	28.3 C (82.9 F)	1.6 C (2.9 F)	0 years	20 of 100 (Routine)
20 March 2026	Adel, US	monthly high max	26.7 C (80.1 F)	0.6 C (1.1 F)	0 years	18 of 100 (Routine)
19 March 2026	Adel, US	monthly high max	26.1 C (79.0 F)	0.5 C (0.9 F)	0 years	17 of 100 (Routine)
18 March 2026	Adel, US	monthly high max	25.6 C (78.1 F)	0.6 C (1.1 F)	59 years	35 of 100 (Notable)
17 March 2026	Adel, US	daily high max	23.9 C (75.0 F)	0.6 C (1.1 F)	19 years	13 of 100 (Routine)
14 March 2026	Adel, US	daily high min	4.4 C (39.9 F)	0.5 C (0.9 F)	25 years	15 of 100 (Routine)

Climate Trend

21 complete years, 1959 to 1990

One stripe for each of 21 complete years at Adel, 1959 to 1990. Blue stripes are years cooler than the station's own mean of 9.7 C (49.4 F); red stripes are warmer. The coolest year was 1964, at 8.5 C (47.3 F), and the warmest was 1988, at 11.0 C (51.9 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Adel as warming stripes, 1959 to 1990
Year	Annual mean temperature	Difference from the station mean
1959	9.8 C	+0.08 C
1964	8.5 C	-1.18 C
1965	8.8 C	-0.90 C
1966	9.2 C	-0.45 C
1967	9.3 C	-0.34 C
1968	9.8 C	+0.07 C
1969	9.4 C	-0.27 C
1970	9.5 C	-0.21 C
1971	8.8 C	-0.91 C
1972	9.3 C	-0.35 C
1973	10.3 C	+0.62 C
1974	10.2 C	+0.50 C
1975	9.2 C	-0.45 C
1976	10.2 C	+0.47 C
1979	10.0 C	+0.36 C
1980	10.4 C	+0.68 C
1981	10.2 C	+0.49 C
1987	10.9 C	+1.24 C
1988	11.0 C	+1.35 C
1989	9.4 C	-0.26 C
1990	9.2 C	-0.45 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

1956 to 2026

Yearly extremes at Adel: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.2 C (108.0 F)	1988	37.2 C (99.0 F)	67
Coldest night (TNn)	-31.1 C (-24.0 F)	1989	-17.8 C (0.0 F)	67
Wettest day (Rx1day)	48.0 mm (1.9 in)	2025	21.7 mm (0.9 in)	66
Wettest five days (Rx5day)	107.7 mm (4.2 in)	1964	28.7 mm (1.1 in)	66
Longest dry spell (CDD)	151 days	1998	51 days	66

Hottest day (TXx)

The hottest day of the year at Adel, 1956 to 2026. The record is 42.2 C (108.0 F) in 1988, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Adel by year
Year	Hottest day (TXx)
1956	33.9 C (93.0 F)
1957	27.8 C (82.0 F)
1958	36.1 C (97.0 F)
1959	37.8 C (100.0 F)
1963	37.2 C (99.0 F)
1964	37.8 C (100.0 F)
1965	35.6 C (96.1 F)
1966	36.7 C (98.1 F)
1967	37.2 C (99.0 F)
1968	39.4 C (102.9 F)
1969	36.1 C (97.0 F)
1970	36.1 C (97.0 F)
1971	36.7 C (98.1 F)
1972	37.8 C (100.0 F)
1973	37.8 C (100.0 F)
1974	37.2 C (99.0 F)
1975	40.0 C (104.0 F)
1976	37.8 C (100.0 F)
1977	38.3 C (100.9 F)
1978	41.7 C (107.1 F)
1979	39.4 C (102.9 F)
1980	38.9 C (102.0 F)
1981	39.4 C (102.9 F)
1982	36.7 C (98.1 F)
1983	38.9 C (102.0 F)
1984	38.3 C (100.9 F)
1985	40.6 C (105.1 F)
1986	36.7 C (98.1 F)
1987	38.9 C (102.0 F)
1988	42.2 C (108.0 F)
1989	35.6 C (96.1 F)
1990	40.0 C (104.0 F)
1991	30.0 C (86.0 F)
1992	38.3 C (100.9 F)
1993	30.0 C (86.0 F)
1994	37.2 C (99.0 F)
1995	33.9 C (93.0 F)
1996	31.7 C (89.1 F)
1997	35.6 C (96.1 F)
1998	26.1 C (79.0 F)
1999	36.7 C (98.1 F)
2000	33.3 C (91.9 F)
2001	38.3 C (100.9 F)
2002	36.1 C (97.0 F)
2003	35.0 C (95.0 F)
2004	35.6 C (96.1 F)
2005	37.2 C (99.0 F)
2006	37.8 C (100.0 F)
2007	37.2 C (99.0 F)
2008	35.6 C (96.1 F)
2009	38.3 C (100.9 F)
2010	36.1 C (97.0 F)
2011	36.7 C (98.1 F)
2012	38.3 C (100.9 F)
2013	36.7 C (98.1 F)
2014	37.8 C (100.0 F)
2015	38.3 C (100.9 F)
2016	39.4 C (102.9 F)
2017	37.8 C (100.0 F)
2018	40.0 C (104.0 F)
2019	28.9 C (84.0 F)
2020	40.0 C (104.0 F)
2022	38.9 C (102.0 F)
2023	37.2 C (99.0 F)
2024	39.4 C (102.9 F)
2025	36.7 C (98.1 F)
2026	38.3 C (100.9 F)

Coldest night (TNn)

The coldest night of the year at Adel, 1956 to 2026. The record is -31.1 C (-24.0 F) in 1989, marked on the chart; the median year is -17.8 C (0.0 F).

Coldest night (TNn) at Adel by year
Year	Coldest night (TNn)
1956	-18.9 C (-2.0 F)
1957	-7.2 C (19.0 F)
1958	-11.1 C (12.0 F)
1959	-18.9 C (-2.0 F)
1963	-16.7 C (1.9 F)
1964	-17.2 C (1.0 F)
1965	-17.8 C (0.0 F)
1966	-17.8 C (0.0 F)
1967	-19.4 C (-2.9 F)
1968	-18.9 C (-2.0 F)
1969	-14.4 C (6.1 F)
1970	-22.2 C (-8.0 F)
1971	-24.4 C (-11.9 F)
1972	-30.0 C (-22.0 F)
1973	-17.8 C (0.0 F)
1974	-23.3 C (-9.9 F)
1975	-17.2 C (1.0 F)
1976	-17.8 C (0.0 F)
1977	-21.1 C (-6.0 F)
1978	-26.7 C (-16.1 F)
1979	-19.4 C (-2.9 F)
1980	-16.7 C (1.9 F)
1981	-13.3 C (8.1 F)
1982	-20.6 C (-5.1 F)
1983	-11.1 C (12.0 F)
1984	-15.6 C (3.9 F)
1985	-17.8 C (0.0 F)
1986	-11.7 C (10.9 F)
1987	-17.2 C (1.0 F)
1988	-17.2 C (1.0 F)
1989	-31.1 C (-24.0 F)
1990	-31.1 C (-24.0 F)
1991	-12.8 C (9.0 F)
1992	-16.7 C (1.9 F)
1993	-20.6 C (-5.1 F)
1994	-15.6 C (3.9 F)
1995	-13.3 C (8.1 F)
1996	-16.1 C (3.0 F)
1997	-17.8 C (0.0 F)
1998	-21.7 C (-7.1 F)
1999	-16.1 C (3.0 F)
2000	-13.9 C (7.0 F)
2001	-16.1 C (3.0 F)
2002	-18.9 C (-2.0 F)
2003	-13.3 C (8.1 F)
2004	-15.0 C (5.0 F)
2005	-16.7 C (1.9 F)
2006	-17.2 C (1.0 F)
2007	-16.7 C (1.9 F)
2008	-18.9 C (-2.0 F)
2009	-21.1 C (-6.0 F)
2010	-17.2 C (1.0 F)
2011	-22.2 C (-8.0 F)
2012	-16.1 C (3.0 F)
2013	-25.6 C (-14.1 F)
2014	-16.1 C (3.0 F)
2015	-21.7 C (-7.1 F)
2016	-22.2 C (-8.0 F)
2017	-22.8 C (-9.0 F)
2018	-19.4 C (-2.9 F)
2019	-17.2 C (1.0 F)
2020	-12.8 C (9.0 F)
2022	-17.8 C (0.0 F)
2023	-17.8 C (0.0 F)
2024	-11.1 C (12.0 F)
2025	-21.1 C (-6.0 F)
2026	-8.9 C (16.0 F)

Wettest day (Rx1day)

The wettest day of the year at Adel, 1956 to 2026. The record is 48.0 mm (1.9 in) in 2025, marked on the chart; the median year is 21.7 mm (0.9 in).

Wettest day (Rx1day) at Adel by year
Year	Wettest day (Rx1day)
1956	12.7 mm (0.5 in)
1957	11.7 mm (0.5 in)
1958	26.4 mm (1.0 in)
1959	19.1 mm (0.8 in)
1963	39.4 mm (1.6 in)
1964	42.4 mm (1.7 in)
1965	22.9 mm (0.9 in)
1966	13.0 mm (0.5 in)
1967	30.0 mm (1.2 in)
1968	21.6 mm (0.9 in)
1969	26.7 mm (1.1 in)
1970	20.3 mm (0.8 in)
1971	25.7 mm (1.0 in)
1972	27.9 mm (1.1 in)
1973	20.8 mm (0.8 in)
1974	23.4 mm (0.9 in)
1975	25.1 mm (1.0 in)
1976	23.9 mm (0.9 in)
1977	42.4 mm (1.7 in)
1978	30.2 mm (1.2 in)
1979	24.1 mm (0.9 in)
1980	25.7 mm (1.0 in)
1981	28.2 mm (1.1 in)
1982	17.0 mm (0.7 in)
1983	26.4 mm (1.0 in)
1984	8.9 mm (0.35 in)
1985	17.0 mm (0.7 in)
1986	41.9 mm (1.6 in)
1987	20.8 mm (0.8 in)
1988	22.9 mm (0.9 in)
1989	20.3 mm (0.8 in)
1990	24.9 mm (1.0 in)
1991	20.3 mm (0.8 in)
1992	11.9 mm (0.5 in)
1993	24.4 mm (1.0 in)
1994	8.9 mm (0.35 in)
1995	0.0 mm (0.00 in)
1996	n/a
1997	0.0 mm (0.00 in)
1998	8.9 mm (0.35 in)
1999	21.8 mm (0.9 in)
2000	27.9 mm (1.1 in)
2001	16.0 mm (0.6 in)
2002	15.7 mm (0.6 in)
2003	24.4 mm (1.0 in)
2004	35.6 mm (1.4 in)
2005	25.4 mm (1.0 in)
2006	8.9 mm (0.35 in)
2007	10.2 mm (0.4 in)
2008	39.4 mm (1.6 in)
2009	44.5 mm (1.8 in)
2010	26.7 mm (1.1 in)
2011	21.6 mm (0.9 in)
2012	20.3 mm (0.8 in)
2013	17.8 mm (0.7 in)
2014	13.2 mm (0.5 in)
2015	22.6 mm (0.9 in)
2016	20.6 mm (0.8 in)
2017	42.4 mm (1.7 in)
2018	19.1 mm (0.8 in)
2019	36.8 mm (1.4 in)
2020	14.0 mm (0.6 in)
2022	11.4 mm (0.4 in)
2023	14.2 mm (0.6 in)
2024	20.3 mm (0.8 in)
2025	48.0 mm (1.9 in)
2026	7.6 mm (0.30 in)

Wettest five days (Rx5day)

The wettest five days of the year at Adel, 1956 to 2026. The record is 107.7 mm (4.2 in) in 1964, marked on the chart; the median year is 28.7 mm (1.1 in).

Wettest five days (Rx5day) at Adel by year
Year	Wettest five days (Rx5day)
1956	22.9 mm (0.9 in)
1957	15.5 mm (0.6 in)
1958	26.4 mm (1.0 in)
1959	28.0 mm (1.1 in)
1963	66.4 mm (2.6 in)
1964	107.7 mm (4.2 in)
1965	24.9 mm (1.0 in)
1966	32.1 mm (1.3 in)
1967	31.8 mm (1.3 in)
1968	34.1 mm (1.3 in)
1969	49.1 mm (1.9 in)
1970	37.6 mm (1.5 in)
1971	47.0 mm (1.9 in)
1972	39.0 mm (1.5 in)
1973	26.5 mm (1.0 in)
1974	39.3 mm (1.5 in)
1975	36.1 mm (1.4 in)
1976	48.3 mm (1.9 in)
1977	44.5 mm (1.8 in)
1978	42.2 mm (1.7 in)
1979	36.6 mm (1.4 in)
1980	56.4 mm (2.2 in)
1981	47.1 mm (1.9 in)
1982	28.9 mm (1.1 in)
1983	51.1 mm (2.0 in)
1984	13.1 mm (0.5 in)
1985	27.2 mm (1.1 in)
1986	100.4 mm (4.0 in)
1987	29.0 mm (1.1 in)
1988	40.6 mm (1.6 in)
1989	27.9 mm (1.1 in)
1990	40.1 mm (1.6 in)
1991	34.8 mm (1.4 in)
1992	21.3 mm (0.8 in)
1993	24.4 mm (1.0 in)
1994	0.3 mm (0.01 in)
1995	0.0 mm (0.00 in)
1996	n/a
1997	0.0 mm (0.00 in)
1998	8.9 mm (0.35 in)
1999	21.8 mm (0.9 in)
2000	29.2 mm (1.1 in)
2001	18.5 mm (0.7 in)
2002	28.4 mm (1.1 in)
2003	24.4 mm (1.0 in)
2004	38.4 mm (1.5 in)
2005	45.9 mm (1.8 in)
2006	38.6 mm (1.5 in)
2007	15.6 mm (0.6 in)
2008	40.9 mm (1.6 in)
2009	72.1 mm (2.8 in)
2010	26.7 mm (1.1 in)
2011	21.1 mm (0.8 in)
2012	61.8 mm (2.4 in)
2013	15.5 mm (0.6 in)
2014	17.5 mm (0.7 in)
2015	36.7 mm (1.4 in)
2016	24.4 mm (1.0 in)
2017	25.4 mm (1.0 in)
2018	19.1 mm (0.8 in)
2019	36.8 mm (1.4 in)
2020	11.9 mm (0.5 in)
2022	13.5 mm (0.5 in)
2023	7.9 mm (0.31 in)
2024	9.5 mm (0.37 in)
2025	28.4 mm (1.1 in)
2026	10.4 mm (0.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Adel, 1956 to 2026. The record is 151 days in 1998, marked on the chart; the median year is 51 days.

Longest dry spell (CDD) at Adel by year
Year	Longest dry spell (CDD)
1956	47 days
1957	10 days
1958	41 days
1959	111 days
1963	51 days
1964	70 days
1965	82 days
1966	66 days
1967	40 days
1968	57 days
1969	57 days
1970	67 days
1971	36 days
1972	70 days
1973	62 days
1974	82 days
1975	44 days
1976	47 days
1977	38 days
1978	62 days
1979	55 days
1980	42 days
1981	78 days
1982	30 days
1983	54 days
1984	82 days
1985	53 days
1986	71 days
1987	103 days
1988	35 days
1989	73 days
1990	46 days
1991	21 days
1992	70 days
1993	26 days
1994	75 days
1995	56 days
1996	n/a
1997	93 days
1998	151 days
1999	78 days
2000	37 days
2001	67 days
2002	86 days
2003	50 days
2004	62 days
2005	81 days
2006	22 days
2007	32 days
2008	73 days
2009	101 days
2010	30 days
2011	29 days
2012	18 days
2013	24 days
2014	19 days
2015	32 days
2016	15 days
2017	25 days
2018	60 days
2019	13 days
2020	20 days
2022	25 days
2023	6 days
2024	11 days
2025	21 days
2026	15 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

21 years with a frost

Across 21 years with a frost, the median last spring frost at Adel falls on 29 May and the median first autumn frost on 19 September, which leaves a median of 122 days between them.

Frost dates and growing season at Adel
Measure	Median, all years	Earliest period	Recent period (1959 to 1990)	Recent against earliest	Fitted trend
Last spring frost	29 May	n/a	29 May	n/a	n/a
First autumn frost	19 September	n/a	19 September	n/a	n/a
Growing days	122 days	n/a	122 days	n/a	n/a

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 Adel standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Adel 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).