Clarence Cannon Dam Weather Records (USC00231600)

Record envelope, standing records and threshold days for Clarence Cannon Dam (USC00231600), Missouri, United States, with 38 years of record.

Key Facts for Clarence Cannon Dam

Clarence Cannon Dam (USC00231600) is a weather station in Missouri, United States at 39.53 latitude and -91.64 longitude, 214 m (702 ft) above sea level.
The station reports from 1989 to 2026, 38 years of record.
1,464 records set at Clarence Cannon Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Clarence Cannon Dam set a daily record high maximum temperature of 31.1 C (88.0 F) on 11 October 2026 (provisional).

Provisional Records

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

About the Station

Location: Missouri, United States, 39.53 latitude, -91.64 longitude.
Elevation: 214 m (702 ft).
Period of record: 1989 to 2026, 38 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 Clarence Cannon Dam. 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 Clarence Cannon Dam, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	21.1 C (70.0 F)	-24.4 C (-11.9 F)	18.3 C (64.9 F)	-19.4 C (-2.9 F)
Feb	26.7 C (80.1 F)	-27.2 C (-17.0 F)	20.0 C (68.0 F)	-12.8 C (9.0 F)
Mar	31.7 C (89.1 F)	-21.7 C (-7.1 F)	31.7 C (89.1 F)	-12.2 C (10.0 F)
Apr	33.3 C (91.9 F)	-7.2 C (19.0 F)	31.1 C (88.0 F)	2.2 C (36.0 F)
May	33.9 C (93.0 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	6.7 C (44.1 F)	33.3 C (91.9 F)	12.8 C (55.0 F)
Jul	41.1 C (106.0 F)	9.4 C (48.9 F)	37.8 C (100.0 F)	16.1 C (61.0 F)
Aug	40.6 C (105.1 F)	8.3 C (46.9 F)	35.6 C (96.1 F)	12.8 C (55.0 F)
Sep	39.4 C (102.9 F)	-2.8 C (27.0 F)	38.9 C (102.0 F)	10.6 C (51.1 F)
Oct	34.4 C (93.9 F)	-5.0 C (23.0 F)	32.2 C (90.0 F)	6.7 C (44.1 F)
Nov	27.8 C (82.0 F)	-16.7 C (1.9 F)	n/a	n/a
Dec	22.8 C (73.0 F)	-28.9 C (-20.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Clarence Cannon Dam still stand. 1989 holds the most, with 82.

Standing records at Clarence Cannon Dam by the year they were set
Year set	Standing records
1989	82
1990	69
1991	68
1992	58
1993	40
1994	36
1995	55
1996	63
1997	51
1998	42
1999	40
2000	47
2001	37
2002	32
2003	38
2004	37
2005	41
2006	40
2007	50
2008	26
2009	46
2010	26
2011	43
2012	43
2013	33
2014	34
2015	24
2016	25
2017	27
2018	30
2019	19
2020	24
2021	16
2022	27
2023	14
2024	25
2025	28
2026	28

All-Time Record Progression

1 new records

1 all-time records were set at Clarence Cannon Dam between 14 January 2019 and 14 January 2019. Each dot is a new record.

Wettest Day of Each Month

Sep: 156.2 mm (6.1 in)

The wettest day on record for each calendar month at Clarence Cannon Dam. The most was 156.2 mm (6.1 in) on 1 September 2003.

Record daily precipitation for each month at Clarence Cannon Dam
Month	Record daily precipitation (mm)	Date
Jan	63.5 mm (2.5 in)	29 January 2001
Feb	125.2 mm (4.9 in)	21 February 1997
Mar	66.5 mm (2.6 in)	27 March 2018
Apr	79.2 mm (3.1 in)	28 April 2009
May	73.7 mm (2.9 in)	24 May 1995
Jun	103.1 mm (4.1 in)	15 June 2017
Jul	135.9 mm (5.4 in)	20 July 2010
Aug	135.1 mm (5.3 in)	10 August 1992
Sep	156.2 mm (6.1 in)	1 September 2003
Oct	94.5 mm (3.7 in)	2 October 2014
Nov	60.2 mm (2.4 in)	18 November 2015
Dec	55.9 mm (2.2 in)	10 December 2003

Period of Record Coverage

1989 to 2026

38 years of record at Clarence Cannon Dam, 1989 to 2026. 31 years have data for under 90 percent of days and are left out of rankings: 1989, 1993, 1997, 1999, 2000, 2001, 2002, 2003 and others.

Days with data per year at Clarence Cannon Dam
Year	Days with data	Share of year	Complete
1989	267	73%	No
1990	364	100%	Yes
1991	363	99%	Yes
1992	357	98%	Yes
1993	328	90%	No
1994	345	95%	Yes
1995	349	96%	Yes
1996	348	95%	Yes
1997	321	88%	No
1998	333	91%	Yes
1999	324	89%	No
2000	316	86%	No
2001	316	87%	No
2002	316	87%	No
2003	316	87%	No
2004	326	89%	No
2005	327	90%	No
2006	319	87%	No
2007	308	84%	No
2008	309	84%	No
2009	312	85%	No
2010	289	79%	No
2011	267	73%	No
2012	219	60%	No
2013	193	53%	No
2014	178	49%	No
2015	187	51%	No
2016	194	53%	No
2017	187	51%	No
2018	192	53%	No
2019	175	48%	No
2020	149	41%	No
2021	106	29%	No
2022	185	51%	No
2023	174	48%	No
2024	192	52%	No
2025	208	57%	No
2026	177	48%	No

Latest Records

Latest records at Clarence Cannon Dam
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 October 2026	Clarence Cannon Dam, US	daily high max (Provisional)	31.1 C (88.0 F)	2.8 C (5.0 F)	1 year	7 of 100 (Routine)
8 October 2026	Clarence Cannon Dam, US	daily high max (Provisional)	30.0 C (86.0 F)	0.6 C (1.1 F)	15 years	7 of 100 (Routine)
1 October 2026	Clarence Cannon Dam, US	monthly high min (Tie, Provisional)	21.7 C (71.1 F)	tie	18 years	4 of 100 (Routine)
20 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	35.6 C (96.1 F)	2.3 C (4.1 F)	25 years	14 of 100 (Routine)
20 September 2026	Clarence Cannon Dam, US	daily high min (Provisional)	21.7 C (71.1 F)	1.7 C (3.1 F)	8 years	8 of 100 (Routine)
19 September 2026	Clarence Cannon Dam, US	daily high min (Provisional)	23.3 C (73.9 F)	3.3 C (5.9 F)	8 years	11 of 100 (Routine)
19 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	35.0 C (95.0 F)	1.1 C (2.0 F)	7 years	7 of 100 (Routine)
18 September 2026	Clarence Cannon Dam, US	daily high min (Provisional)	23.9 C (75.0 F)	2.8 C (5.0 F)	11 years	11 of 100 (Routine)
18 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	36.7 C (98.1 F)	2.8 C (5.0 F)	0 years	8 of 100 (Routine)
17 September 2026	Clarence Cannon Dam, US	daily high min (Provisional)	21.1 C (70.0 F)	1.7 C (3.1 F)	33 years	16 of 100 (Routine)
16 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	35.6 C (96.1 F)	1.2 C (2.2 F)	0 years	5 of 100 (Routine)
9 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	36.7 C (98.1 F)	2.8 C (5.0 F)	24 years	15 of 100 (Routine)
6 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	38.3 C (100.9 F)	1.1 C (2.0 F)	36 years	15 of 100 (Routine)
5 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	37.8 C (100.0 F)	1.1 C (2.0 F)	36 years	15 of 100 (Routine)
4 September 2026	Clarence Cannon Dam, US	monthly high min (Provisional)	25.6 C (78.1 F)	0.6 C (1.1 F)	15 years	18 of 100 (Routine)
3 September 2026	Clarence Cannon Dam, US	daily high max (Provisional)	38.9 C (102.0 F)	3.3 C (5.9 F)	25 years	16 of 100 (Routine)
3 September 2026	Clarence Cannon Dam, US	monthly high min (Tie, Provisional)	25.0 C (77.0 F)	tie	15 years	4 of 100 (Routine)
12 August 2026	Clarence Cannon Dam, US	daily high min	25.0 C (77.0 F)	0.6 C (1.1 F)	20 years	10 of 100 (Routine)
11 August 2026	Clarence Cannon Dam, US	daily high min	24.4 C (75.9 F)	1.1 C (2.0 F)	20 years	12 of 100 (Routine)
2 August 2026	Clarence Cannon Dam, US	daily low max	21.1 C (70.0 F)	6.1 C (11.0 F)	36 years	29 of 100 (Routine)

Extremes by Year

1989 to 2026

Yearly extremes at Clarence Cannon Dam: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.1 C (106.0 F)	2005	37.2 C (99.0 F)	38
Coldest night (TNn)	-28.9 C (-20.0 F)	1989	-19.7 C (-3.5 F)	38
Wettest day (Rx1day)	156.2 mm (6.1 in)	2003	68.7 mm (2.7 in)	38
Wettest five days (Rx5day)	195.7 mm (7.7 in)	1991	100.5 mm (4.0 in)	38
Longest dry spell (CDD)	44 days	1999	19 days	38

Hottest day (TXx)

The hottest day of the year at Clarence Cannon Dam, 1989 to 2026. The record is 41.1 C (106.0 F) in 2005, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Clarence Cannon Dam by year
Year	Hottest day (TXx)
1989	37.8 C (100.0 F)
1990	37.8 C (100.0 F)
1991	38.3 C (100.9 F)
1992	34.4 C (93.9 F)
1993	35.6 C (96.1 F)
1994	37.2 C (99.0 F)
1995	38.3 C (100.9 F)
1996	37.2 C (99.0 F)
1997	38.3 C (100.9 F)
1998	36.7 C (98.1 F)
1999	40.0 C (104.0 F)
2000	36.7 C (98.1 F)
2001	37.8 C (100.0 F)
2002	37.2 C (99.0 F)
2003	40.0 C (104.0 F)
2004	34.4 C (93.9 F)
2005	41.1 C (106.0 F)
2006	39.4 C (102.9 F)
2007	38.9 C (102.0 F)
2008	35.6 C (96.1 F)
2009	36.1 C (97.0 F)
2010	36.7 C (98.1 F)
2011	40.6 C (105.1 F)
2012	40.0 C (104.0 F)
2013	36.7 C (98.1 F)
2014	34.4 C (93.9 F)
2015	35.0 C (95.0 F)
2016	36.7 C (98.1 F)
2017	37.2 C (99.0 F)
2018	35.0 C (95.0 F)
2019	34.4 C (93.9 F)
2020	34.4 C (93.9 F)
2021	32.8 C (91.0 F)
2022	38.3 C (100.9 F)
2023	39.4 C (102.9 F)
2024	37.2 C (99.0 F)
2025	35.6 C (96.1 F)
2026	38.9 C (102.0 F)

Coldest night (TNn)

The coldest night of the year at Clarence Cannon Dam, 1989 to 2026. The record is -28.9 C (-20.0 F) in 1989, marked on the chart; the median year is -19.7 C (-3.5 F).

Coldest night (TNn) at Clarence Cannon Dam by year
Year	Coldest night (TNn)
1989	-28.9 C (-20.0 F)
1990	-18.3 C (-0.9 F)
1991	-17.8 C (0.0 F)
1992	-15.0 C (5.0 F)
1993	-18.3 C (-0.9 F)
1994	-23.9 C (-11.0 F)
1995	-17.8 C (0.0 F)
1996	-27.2 C (-17.0 F)
1997	-23.9 C (-11.0 F)
1998	-17.8 C (0.0 F)
1999	-22.8 C (-9.0 F)
2000	-19.4 C (-2.9 F)
2001	-21.7 C (-7.1 F)
2002	-17.2 C (1.0 F)
2003	-20.6 C (-5.1 F)
2004	-20.0 C (-4.0 F)
2005	-17.2 C (1.0 F)
2006	-18.3 C (-0.9 F)
2007	-18.9 C (-2.0 F)
2008	-18.9 C (-2.0 F)
2009	-21.1 C (-6.0 F)
2010	-19.4 C (-2.9 F)
2011	-24.4 C (-11.9 F)
2012	-12.8 C (9.0 F)
2013	-18.3 C (-0.9 F)
2014	-25.0 C (-13.0 F)
2015	-19.4 C (-2.9 F)
2016	-17.2 C (1.0 F)
2017	-21.1 C (-6.0 F)
2018	-23.9 C (-11.0 F)
2019	-24.4 C (-11.9 F)
2020	-21.1 C (-6.0 F)
2021	-20.0 C (-4.0 F)
2022	-20.0 C (-4.0 F)
2023	-15.6 C (3.9 F)
2024	-20.0 C (-4.0 F)
2025	-22.2 C (-8.0 F)
2026	-19.4 C (-2.9 F)

Wettest day (Rx1day)

The wettest day of the year at Clarence Cannon Dam, 1989 to 2026. The record is 156.2 mm (6.1 in) in 2003, marked on the chart; the median year is 68.7 mm (2.7 in).

Wettest day (Rx1day) at Clarence Cannon Dam by year
Year	Wettest day (Rx1day)
1989	63.5 mm (2.5 in)
1990	88.6 mm (3.5 in)
1991	126.7 mm (5.0 in)
1992	135.1 mm (5.3 in)
1993	104.6 mm (4.1 in)
1994	57.9 mm (2.3 in)
1995	73.7 mm (2.9 in)
1996	76.2 mm (3.0 in)
1997	125.2 mm (4.9 in)
1998	52.3 mm (2.1 in)
1999	50.8 mm (2.0 in)
2000	68.6 mm (2.7 in)
2001	97.8 mm (3.9 in)
2002	94.0 mm (3.7 in)
2003	156.2 mm (6.1 in)
2004	68.8 mm (2.7 in)
2005	42.4 mm (1.7 in)
2006	63.0 mm (2.5 in)
2007	68.1 mm (2.7 in)
2008	106.7 mm (4.2 in)
2009	79.2 mm (3.1 in)
2010	135.9 mm (5.4 in)
2011	49.3 mm (1.9 in)
2012	29.2 mm (1.1 in)
2013	65.8 mm (2.6 in)
2014	94.5 mm (3.7 in)
2015	60.2 mm (2.4 in)
2016	51.6 mm (2.0 in)
2017	103.1 mm (4.1 in)
2018	95.3 mm (3.8 in)
2019	59.7 mm (2.4 in)
2020	64.8 mm (2.6 in)
2021	58.4 mm (2.3 in)
2022	82.3 mm (3.2 in)
2023	45.7 mm (1.8 in)
2024	46.5 mm (1.8 in)
2025	79.2 mm (3.1 in)
2026	43.7 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Clarence Cannon Dam, 1989 to 2026. The record is 195.7 mm (7.7 in) in 1991, marked on the chart; the median year is 100.5 mm (4.0 in).

Wettest five days (Rx5day) at Clarence Cannon Dam by year
Year	Wettest five days (Rx5day)
1989	127.3 mm (5.0 in)
1990	135.6 mm (5.3 in)
1991	195.7 mm (7.7 in)
1992	158.7 mm (6.2 in)
1993	163.5 mm (6.4 in)
1994	121.9 mm (4.8 in)
1995	146.1 mm (5.8 in)
1996	98.2 mm (3.9 in)
1997	125.2 mm (4.9 in)
1998	85.6 mm (3.4 in)
1999	80.8 mm (3.2 in)
2000	84.1 mm (3.3 in)
2001	123.4 mm (4.9 in)
2002	147.1 mm (5.8 in)
2003	186.9 mm (7.4 in)
2004	158.2 mm (6.2 in)
2005	58.1 mm (2.3 in)
2006	83.4 mm (3.3 in)
2007	132.2 mm (5.2 in)
2008	144.0 mm (5.7 in)
2009	166.6 mm (6.6 in)
2010	176.8 mm (7.0 in)
2011	65.6 mm (2.6 in)
2012	17.3 mm (0.7 in)
2013	91.4 mm (3.6 in)
2014	0.8 mm (0.03 in)
2015	102.8 mm (4.0 in)
2016	58.7 mm (2.3 in)
2017	109.5 mm (4.3 in)
2018	68.8 mm (2.7 in)
2019	74.4 mm (2.9 in)
2020	110.7 mm (4.4 in)
2021	52.1 mm (2.1 in)
2022	96.3 mm (3.8 in)
2023	59.7 mm (2.4 in)
2024	47.8 mm (1.9 in)
2025	85.6 mm (3.4 in)
2026	68.3 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Clarence Cannon Dam, 1989 to 2026. The record is 44 days in 1999, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Clarence Cannon Dam by year
Year	Longest dry spell (CDD)
1989	21 days
1990	27 days
1991	24 days
1992	18 days
1993	22 days
1994	23 days
1995	25 days
1996	26 days
1997	14 days
1998	17 days
1999	44 days
2000	18 days
2001	16 days
2002	32 days
2003	17 days
2004	26 days
2005	21 days
2006	27 days
2007	24 days
2008	13 days
2009	16 days
2010	19 days
2011	14 days
2012	11 days
2013	5 days
2014	5 days
2015	5 days
2016	26 days
2017	19 days
2018	16 days
2019	13 days
2020	17 days
2021	17 days
2022	23 days
2023	21 days
2024	30 days
2025	15 days
2026	18 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.

Download the Data

Data for Clarence Cannon Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Clarence Cannon Dam 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).