Stillwater Rgnl AP Weather Records (USW00003965)

Record envelope, standing records and threshold days for Stillwater Rgnl AP (USW00003965), Oklahoma, United States, with 31 years of record.

Key Facts for Stillwater Rgnl AP

Stillwater Rgnl AP (USW00003965) is a weather station in Oklahoma, United States at 36.16 latitude and -97.09 longitude, 293 m (961 ft) above sea level.
The station reports from 1996 to 2026, 31 years of record.
1,464 records set at Stillwater Rgnl AP still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Oklahoma, United States, 36.16 latitude, -97.09 longitude.
Elevation: 293 m (961 ft).
Period of record: 1996 to 2026, 31 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

22 days at or beyond a record

The band shows the record high and record low for each calendar day at Stillwater Rgnl AP. The lines show the 2026 daily maximum and minimum. 22 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Stillwater Rgnl AP, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	27.8 C (82.0 F)	-20.5 C (-4.9 F)	18.3 C (64.9 F)	-18.8 C (-1.8 F)
Feb	32.2 C (90.0 F)	-29.4 C (-20.9 F)	27.8 C (82.0 F)	-16.6 C (2.1 F)
Mar	34.4 C (93.9 F)	-17.7 C (0.1 F)	31.7 C (89.1 F)	-2.1 C (28.2 F)
Apr	38.9 C (102.0 F)	-5.5 C (22.1 F)	31.7 C (89.1 F)	-2.1 C (28.2 F)
May	37.8 C (100.0 F)	0.0 C (32.0 F)	35.0 C (95.0 F)	6.1 C (43.0 F)
Jun	41.1 C (106.0 F)	8.3 C (46.9 F)	34.4 C (93.9 F)	15.6 C (60.1 F)
Jul	44.4 C (111.9 F)	11.7 C (53.1 F)	38.9 C (102.0 F)	19.4 C (66.9 F)
Aug	45.6 C (114.1 F)	10.0 C (50.0 F)	38.3 C (100.9 F)	16.7 C (62.1 F)
Sep	42.8 C (109.0 F)	1.1 C (34.0 F)	34.4 C (93.9 F)	11.7 C (53.1 F)
Oct	36.7 C (98.1 F)	-5.6 C (21.9 F)	33.9 C (93.0 F)	0.0 C (32.0 F)
Nov	32.2 C (90.0 F)	-10.5 C (13.1 F)	27.8 C (82.0 F)	-6.7 C (19.9 F)
Dec	29.4 C (84.9 F)	-18.8 C (-1.8 F)	29.4 C (84.9 F)	-10.6 C (12.9 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Stillwater Rgnl AP still stand. 2011 holds the most, with 107.

Standing records at Stillwater Rgnl AP by the year they were set
Year set	Standing records
1996	7
1997	54
1998	55
1999	45
2000	68
2001	33
2002	39
2003	49
2004	49
2005	32
2006	90
2007	30
2008	38
2009	67
2010	45
2011	107
2012	60
2013	51
2014	62
2015	42
2016	41
2017	38
2018	39
2019	32
2020	38
2021	51
2022	68
2023	39
2024	59
2025	36

Wettest Day of Each Month

Jun: 164.3 mm (6.5 in)

The wettest day on record for each calendar month at Stillwater Rgnl AP. The most was 164.3 mm (6.5 in) on 1 June 2007.

Record daily precipitation for each month at Stillwater Rgnl AP
Month	Record daily precipitation (mm)	Date
Jan	67.8 mm (2.7 in)	30 January 2002
Feb	55.6 mm (2.2 in)	3 February 2012
Mar	64.3 mm (2.5 in)	4 March 2004
Apr	98.6 mm (3.9 in)	29 April 2017
May	129.0 mm (5.1 in)	20 May 2019
Jun	164.3 mm (6.5 in)	1 June 2007
Jul	74.9 mm (2.9 in)	29 July 2013
Aug	72.6 mm (2.9 in)	23 August 2002
Sep	85.6 mm (3.4 in)	22 September 2019
Oct	78.7 mm (3.1 in)	4 October 2017
Nov	84.3 mm (3.3 in)	3 November 2024
Dec	55.9 mm (2.2 in)	26 December 2018

Period of Record Coverage

1996 to 2025

30 years of record at Stillwater Rgnl AP, 1996 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 1996.

Days with data per year at Stillwater Rgnl AP
Year	Days with data	Share of year	Complete
1996	60	16%	No
1997	356	98%	Yes
1998	365	100%	Yes
1999	364	100%	Yes
2000	362	99%	Yes
2001	354	97%	Yes
2002	355	97%	Yes
2003	364	100%	Yes
2004	365	100%	Yes
2005	342	94%	Yes
2006	357	98%	Yes
2007	345	95%	Yes
2008	356	97%	Yes
2009	363	99%	Yes
2010	362	99%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	364	100%	Yes
2018	363	99%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	365	100%	Yes
2022	365	100%	Yes
2023	364	100%	Yes
2024	366	100%	Yes
2025	363	99%	Yes

Latest Records

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

Climate Trend

27 complete years, 1997 to 2025

One stripe for each of 27 complete years at Stillwater Rgnl AP, 1997 to 2025. Blue stripes are years cooler than the station's own mean of 16.1 C (61.0 F); red stripes are warmer. The coolest year was 1997, at 14.5 C (58.2 F), and the warmest was 2024, at 18.0 C (64.4 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Stillwater Rgnl AP as warming stripes, 1997 to 2025
Year	Annual mean temperature	Difference from the station mean
1997	14.5 C	-1.61 C
1998	16.4 C	+0.28 C
1999	16.1 C	-0.09 C
2000	15.4 C	-0.78 C
2001	16.0 C	-0.12 C
2002	15.0 C	-1.11 C
2003	15.2 C	-0.96 C
2004	15.4 C	-0.74 C
2006	17.5 C	+1.34 C
2008	15.7 C	-0.46 C
2009	15.6 C	-0.56 C
2010	16.1 C	-0.05 C
2011	16.5 C	+0.40 C
2012	17.8 C	+1.61 C
2013	14.9 C	-1.21 C
2014	15.3 C	-0.86 C
2015	16.0 C	-0.15 C
2016	16.8 C	+0.65 C
2017	16.6 C	+0.50 C
2018	15.6 C	-0.50 C
2019	16.0 C	-0.11 C
2020	16.4 C	+0.29 C
2021	16.7 C	+0.57 C
2022	16.8 C	+0.62 C
2023	17.1 C	+0.97 C
2024	18.0 C	+1.86 C
2025	16.3 C	+0.14 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

1996 to 2026

Yearly extremes at Stillwater Rgnl AP: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	2012	40.6 C (105.1 F)	31
Coldest night (TNn)	-29.4 C (-20.9 F)	2011	-16.0 C (3.2 F)	31
Wettest day (Rx1day)	164.3 mm (6.5 in)	2007	68.8 mm (2.7 in)	29
Wettest five days (Rx5day)	211.0 mm (8.3 in)	2019	103.9 mm (4.1 in)	29
Longest dry spell (CDD)	52 days	2005	32 days	29

Hottest day (TXx)

The hottest day of the year at Stillwater Rgnl AP, 1996 to 2026. The record is 45.6 C (114.1 F) in 2012, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Stillwater Rgnl AP by year
Year	Hottest day (TXx)
1996	25.6 C (78.1 F)
1997	37.2 C (99.0 F)
1998	42.8 C (109.0 F)
1999	42.8 C (109.0 F)
2000	42.8 C (109.0 F)
2001	40.6 C (105.1 F)
2002	40.0 C (104.0 F)
2003	42.2 C (108.0 F)
2004	37.8 C (100.0 F)
2005	38.9 C (102.0 F)
2006	43.9 C (111.0 F)
2007	40.0 C (104.0 F)
2008	41.1 C (106.0 F)
2009	42.8 C (109.0 F)
2010	42.2 C (108.0 F)
2011	45.0 C (113.0 F)
2012	45.6 C (114.1 F)
2013	39.4 C (102.9 F)
2014	39.4 C (102.9 F)
2015	40.6 C (105.1 F)
2016	38.9 C (102.0 F)
2017	41.1 C (106.0 F)
2018	43.3 C (109.9 F)
2019	39.4 C (102.9 F)
2020	40.0 C (104.0 F)
2021	38.9 C (102.0 F)
2022	44.4 C (111.9 F)
2023	41.7 C (107.1 F)
2024	40.6 C (105.1 F)
2025	38.9 C (102.0 F)
2026	42.2 C (108.0 F)

Coldest night (TNn)

The coldest night of the year at Stillwater Rgnl AP, 1996 to 2026. The record is -29.4 C (-20.9 F) in 2011, marked on the chart; the median year is -16.0 C (3.2 F).

Coldest night (TNn) at Stillwater Rgnl AP by year
Year	Coldest night (TNn)
1996	-13.3 C (8.1 F)
1997	-17.2 C (1.0 F)
1998	-14.4 C (6.1 F)
1999	-13.3 C (8.1 F)
2000	-17.2 C (1.0 F)
2001	-14.4 C (6.1 F)
2002	-15.6 C (3.9 F)
2003	-14.4 C (6.1 F)
2004	-14.4 C (6.1 F)
2005	-16.1 C (3.0 F)
2006	-16.1 C (3.0 F)
2007	-15.6 C (3.9 F)
2008	-14.4 C (6.1 F)
2009	-15.6 C (3.9 F)
2010	-16.1 C (3.0 F)
2011	-29.4 C (-20.9 F)
2012	-11.7 C (10.9 F)
2013	-16.0 C (3.2 F)
2014	-19.3 C (-2.7 F)
2015	-14.3 C (6.3 F)
2016	-18.8 C (-1.8 F)
2017	-18.2 C (-0.8 F)
2018	-17.1 C (1.2 F)
2019	-12.7 C (9.1 F)
2020	-11.0 C (12.2 F)
2021	-27.1 C (-16.8 F)
2022	-16.6 C (2.1 F)
2023	-11.6 C (11.1 F)
2024	-20.5 C (-4.9 F)
2025	-18.8 C (-1.8 F)
2026	-16.1 C (3.0 F)

Wettest day (Rx1day)

The wettest day of the year at Stillwater Rgnl AP, 1996 to 2026. The record is 164.3 mm (6.5 in) in 2007, marked on the chart; the median year is 68.8 mm (2.7 in).

Wettest day (Rx1day) at Stillwater Rgnl AP by year
Year	Wettest day (Rx1day)
1996	n/a
1997	n/a
1998	77.5 mm (3.1 in)
1999	59.9 mm (2.4 in)
2000	59.2 mm (2.3 in)
2001	68.8 mm (2.7 in)
2002	72.6 mm (2.9 in)
2003	40.1 mm (1.6 in)
2004	64.3 mm (2.5 in)
2005	55.1 mm (2.2 in)
2006	42.7 mm (1.7 in)
2007	164.3 mm (6.5 in)
2008	86.4 mm (3.4 in)
2009	47.5 mm (1.9 in)
2010	88.6 mm (3.5 in)
2011	53.1 mm (2.1 in)
2012	77.0 mm (3.0 in)
2013	74.9 mm (2.9 in)
2014	73.7 mm (2.9 in)
2015	71.9 mm (2.8 in)
2016	52.3 mm (2.1 in)
2017	98.6 mm (3.9 in)
2018	69.1 mm (2.7 in)
2019	129.0 mm (5.1 in)
2020	51.3 mm (2.0 in)
2021	46.0 mm (1.8 in)
2022	48.0 mm (1.9 in)
2023	55.9 mm (2.2 in)
2024	84.3 mm (3.3 in)
2025	52.3 mm (2.1 in)
2026	79.8 mm (3.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Stillwater Rgnl AP, 1996 to 2026. The record is 211.0 mm (8.3 in) in 2019, marked on the chart; the median year is 103.9 mm (4.1 in).

Wettest five days (Rx5day) at Stillwater Rgnl AP by year
Year	Wettest five days (Rx5day)
1996	n/a
1997	n/a
1998	103.9 mm (4.1 in)
1999	109.2 mm (4.3 in)
2000	85.2 mm (3.4 in)
2001	101.8 mm (4.0 in)
2002	90.5 mm (3.6 in)
2003	61.7 mm (2.4 in)
2004	104.6 mm (4.1 in)
2005	88.6 mm (3.5 in)
2006	76.0 mm (3.0 in)
2007	197.3 mm (7.8 in)
2008	132.9 mm (5.2 in)
2009	98.4 mm (3.9 in)
2010	89.9 mm (3.5 in)
2011	55.6 mm (2.2 in)
2012	97.3 mm (3.8 in)
2013	110.4 mm (4.3 in)
2014	109.1 mm (4.3 in)
2015	93.0 mm (3.7 in)
2016	72.0 mm (2.8 in)
2017	114.3 mm (4.5 in)
2018	116.1 mm (4.6 in)
2019	211.0 mm (8.3 in)
2020	112.7 mm (4.4 in)
2021	100.1 mm (3.9 in)
2022	137.6 mm (5.4 in)
2023	88.6 mm (3.5 in)
2024	153.6 mm (6.0 in)
2025	106.7 mm (4.2 in)
2026	160.2 mm (6.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Stillwater Rgnl AP, 1996 to 2026. The record is 52 days in 2005, marked on the chart; the median year is 32 days.

Longest dry spell (CDD) at Stillwater Rgnl AP by year
Year	Longest dry spell (CDD)
1996	n/a
1997	n/a
1998	22 days
1999	30 days
2000	46 days
2001	27 days
2002	30 days
2003	36 days
2004	25 days
2005	52 days
2006	48 days
2007	31 days
2008	26 days
2009	38 days
2010	37 days
2011	32 days
2012	46 days
2013	31 days
2014	34 days
2015	27 days
2016	25 days
2017	37 days
2018	40 days
2019	28 days
2020	29 days
2021	39 days
2022	39 days
2023	28 days
2024	37 days
2025	37 days
2026	24 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

27 years with a frost

Across 27 years with a frost, the median last spring frost at Stillwater Rgnl AP falls on 8 April and the median first autumn frost on 27 October, which leaves a median of 204 days between them.

Fitted over all years, the growing season changes by +0.4 days per decade at this station.

Frost dates and growing season at Stillwater Rgnl AP
Measure	Median, all years	Earliest period	Recent period (1997 to 2025)	Recent against earliest	Fitted trend
Last spring frost	8 April	n/a	8 April	n/a	+1.2 days per decade
First autumn frost	27 October	n/a	27 October	n/a	+1.5 days per decade
Growing days	204 days	n/a	204 days	n/a	+0.4 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 Stillwater Rgnl AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Stillwater Rgnl 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 2026-10-14 (14 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).