McCook Muni AP Weather Records (USW00094040)

Record envelope, standing records and threshold days for McCook Muni AP (USW00094040), Nebraska, United States, with 30 years of record.

Key Facts for McCook Muni AP

McCook Muni AP (USW00094040) is a weather station in Nebraska, United States at 40.20 latitude and -100.59 longitude, 779 m (2,557 ft) above sea level.
The station reports from 1997 to 2026, 30 years of record.
1,464 records set at McCook 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: Nebraska, United States, 40.20 latitude, -100.59 longitude.
Elevation: 779 m (2,557 ft).
Period of record: 1997 to 2026, 30 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

31 days at or beyond a record

The band shows the record high and record low for each calendar day at McCook Muni AP. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at McCook Muni AP, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.0 C (77.0 F)	-26.6 C (-15.9 F)	17.8 C (64.0 F)	-22.7 C (-8.9 F)
Feb	27.8 C (82.0 F)	-31.0 C (-23.8 F)	24.4 C (75.9 F)	-31.0 C (-23.8 F)
Mar	33.9 C (93.0 F)	-23.2 C (-9.8 F)	31.7 C (89.1 F)	-7.1 C (19.2 F)
Apr	36.1 C (97.0 F)	-16.0 C (3.2 F)	32.8 C (91.0 F)	-6.0 C (21.2 F)
May	41.1 C (106.0 F)	-4.4 C (24.1 F)	32.8 C (91.0 F)	0.6 C (33.1 F)
Jun	46.1 C (115.0 F)	3.9 C (39.0 F)	40.6 C (105.1 F)	6.7 C (44.1 F)
Jul	43.9 C (111.0 F)	7.8 C (46.0 F)	40.6 C (105.1 F)	15.0 C (59.0 F)
Aug	42.8 C (109.0 F)	5.6 C (42.1 F)	38.9 C (102.0 F)	13.3 C (55.9 F)
Sep	41.1 C (106.0 F)	-1.6 C (29.1 F)	38.3 C (100.9 F)	5.6 C (42.1 F)
Oct	36.1 C (97.0 F)	-16.6 C (2.1 F)	32.8 C (91.0 F)	-3.3 C (26.1 F)
Nov	31.7 C (89.1 F)	-20.6 C (-5.1 F)	27.8 C (82.0 F)	-13.3 C (8.1 F)
Dec	25.6 C (78.1 F)	-26.7 C (-16.1 F)	25.6 C (78.1 F)	-11.7 C (10.9 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at McCook Muni AP still stand. 2002 holds the most, with 72.

Standing records at McCook Muni AP by the year they were set
Year set	Standing records
1997	49
1998	57
1999	49
2000	71
2001	38
2002	72
2003	50
2004	60
2005	50
2006	55
2007	45
2008	37
2009	50
2010	30
2011	58
2012	70
2013	55
2014	60
2015	49
2016	32
2017	40
2018	46
2019	54
2020	43
2021	46
2022	45
2023	43
2024	50
2025	60

Wettest Day of Each Month

May: 153.9 mm (6.1 in)

The wettest day on record for each calendar month at McCook Muni AP. The most was 153.9 mm (6.1 in) on 26 May 2023.

Record daily precipitation for each month at McCook Muni AP
Month	Record daily precipitation (mm)	Date
Jan	23.1 mm (0.9 in)	21 January 2018
Feb	23.1 mm (0.9 in)	2 February 2016
Mar	41.9 mm (1.6 in)	13 March 2021
Apr	116.8 mm (4.6 in)	16 April 2016
May	153.9 mm (6.1 in)	26 May 2023
Jun	65.5 mm (2.6 in)	19 June 2018
Jul	74.2 mm (2.9 in)	17 July 2018
Aug	56.4 mm (2.2 in)	3 August 2010
Sep	127.3 mm (5.0 in)	16 September 2025
Oct	43.4 mm (1.7 in)	28 October 2000
Nov	39.9 mm (1.6 in)	17 November 2015
Dec	31.5 mm (1.2 in)	29 December 2006

Period of Record Coverage

1997 to 2025

29 years of record at McCook Muni AP, 1997 to 2025. Every year has data for at least 90 percent of its days.

Days with data per year at McCook Muni AP
Year	Days with data	Share of year	Complete
1997	363	99%	Yes
1998	364	100%	Yes
1999	357	98%	Yes
2000	365	100%	Yes
2001	362	99%	Yes
2002	361	99%	Yes
2003	364	100%	Yes
2004	365	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	365	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	364	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	365	100%	Yes
2021	363	99%	Yes
2022	365	100%	Yes
2023	362	99%	Yes
2024	357	98%	Yes
2025	365	100%	Yes

Latest Records

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

Climate Trend

29 complete years, 1997 to 2025

One stripe for each of 29 complete years at McCook Muni AP, 1997 to 2025. Blue stripes are years cooler than the station's own mean of 11.6 C (52.9 F); red stripes are warmer. The coolest year was 2009, at 10.3 C (50.6 F), and the warmest was 2024, at 13.1 C (55.5 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at McCook Muni AP as warming stripes, 1997 to 2025
Year	Annual mean temperature	Difference from the station mean
1997	10.8 C	-0.78 C
1998	12.0 C	+0.36 C
1999	11.7 C	+0.08 C
2000	11.5 C	-0.09 C
2001	12.5 C	+0.92 C
2002	12.4 C	+0.78 C
2003	11.6 C	-0.01 C
2004	11.4 C	-0.20 C
2005	11.9 C	+0.29 C
2006	12.3 C	+0.66 C
2007	10.9 C	-0.69 C
2008	10.5 C	-1.13 C
2009	10.3 C	-1.28 C
2010	11.3 C	-0.33 C
2011	10.8 C	-0.84 C
2012	12.8 C	+1.17 C
2013	11.0 C	-0.57 C
2014	10.7 C	-0.87 C
2015	12.6 C	+0.96 C
2016	12.3 C	+0.69 C
2017	12.0 C	+0.44 C
2018	10.6 C	-1.02 C
2019	10.4 C	-1.24 C
2020	11.9 C	+0.26 C
2021	11.9 C	+0.29 C
2022	11.6 C	-0.03 C
2023	11.6 C	+0.01 C
2024	13.1 C	+1.47 C
2025	12.2 C	+0.60 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

1997 to 2026

Yearly extremes at McCook Muni AP: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.1 C (115.0 F)	2012	41.1 C (106.0 F)	30
Coldest night (TNn)	-31.0 C (-23.8 F)	2025	-23.2 C (-9.8 F)	30
Wettest day (Rx1day)	153.9 mm (6.1 in)	2023	46.0 mm (1.8 in)	29
Wettest five days (Rx5day)	186.4 mm (7.3 in)	2023	76.5 mm (3.0 in)	29
Longest dry spell (CDD)	83 days	2023	42 days	29

Hottest day (TXx)

The hottest day of the year at McCook Muni AP, 1997 to 2026. The record is 46.1 C (115.0 F) in 2012, marked on the chart; the median year is 41.1 C (106.0 F).

Hottest day (TXx) at McCook Muni AP by year
Year	Hottest day (TXx)
1997	40.0 C (104.0 F)
1998	42.2 C (108.0 F)
1999	38.9 C (102.0 F)
2000	42.2 C (108.0 F)
2001	43.9 C (111.0 F)
2002	41.7 C (107.1 F)
2003	42.8 C (109.0 F)
2004	39.4 C (102.9 F)
2005	42.8 C (109.0 F)
2006	43.9 C (111.0 F)
2007	38.9 C (102.0 F)
2008	42.8 C (109.0 F)
2009	38.3 C (100.9 F)
2010	40.0 C (104.0 F)
2011	40.6 C (105.1 F)
2012	46.1 C (115.0 F)
2013	42.2 C (108.0 F)
2014	40.0 C (104.0 F)
2015	41.1 C (106.0 F)
2016	40.0 C (104.0 F)
2017	41.7 C (107.1 F)
2018	41.1 C (106.0 F)
2019	40.0 C (104.0 F)
2020	38.9 C (102.0 F)
2021	42.2 C (108.0 F)
2022	43.9 C (111.0 F)
2023	39.4 C (102.9 F)
2024	41.1 C (106.0 F)
2025	40.6 C (105.1 F)
2026	43.9 C (111.0 F)

Coldest night (TNn)

The coldest night of the year at McCook Muni AP, 1997 to 2026. The record is -31.0 C (-23.8 F) in 2025, marked on the chart; the median year is -23.2 C (-9.8 F).

Coldest night (TNn) at McCook Muni AP by year
Year	Coldest night (TNn)
1997	-23.3 C (-9.9 F)
1998	-26.7 C (-16.1 F)
1999	-18.3 C (-0.9 F)
2000	-20.6 C (-5.1 F)
2001	-16.7 C (1.9 F)
2002	-22.2 C (-8.0 F)
2003	-22.2 C (-8.0 F)
2004	-26.1 C (-15.0 F)
2005	-25.0 C (-13.0 F)
2006	-20.5 C (-4.9 F)
2007	-23.8 C (-10.8 F)
2008	-23.2 C (-9.8 F)
2009	-21.6 C (-6.9 F)
2010	-21.6 C (-6.9 F)
2011	-26.0 C (-14.8 F)
2012	-23.2 C (-9.8 F)
2013	-23.2 C (-9.8 F)
2014	-26.0 C (-14.8 F)
2015	-20.5 C (-4.9 F)
2016	-26.6 C (-15.9 F)
2017	-24.3 C (-11.7 F)
2018	-21.0 C (-5.8 F)
2019	-23.2 C (-9.8 F)
2020	-19.3 C (-2.7 F)
2021	-29.9 C (-21.8 F)
2022	-26.0 C (-14.8 F)
2023	-19.3 C (-2.7 F)
2024	-26.6 C (-15.9 F)
2025	-31.0 C (-23.8 F)
2026	-23.3 C (-9.9 F)

Wettest day (Rx1day)

The wettest day of the year at McCook Muni AP, 1997 to 2026. The record is 153.9 mm (6.1 in) in 2023, marked on the chart; the median year is 46.0 mm (1.8 in).

Wettest day (Rx1day) at McCook Muni AP by year
Year	Wettest day (Rx1day)
1997	n/a
1998	29.7 mm (1.2 in)
1999	43.9 mm (1.7 in)
2000	43.4 mm (1.7 in)
2001	46.0 mm (1.8 in)
2002	40.9 mm (1.6 in)
2003	38.9 mm (1.5 in)
2004	57.4 mm (2.3 in)
2005	58.7 mm (2.3 in)
2006	31.5 mm (1.2 in)
2007	75.9 mm (3.0 in)
2008	130.3 mm (5.1 in)
2009	43.2 mm (1.7 in)
2010	56.4 mm (2.2 in)
2011	65.8 mm (2.6 in)
2012	37.1 mm (1.5 in)
2013	32.5 mm (1.3 in)
2014	64.8 mm (2.6 in)
2015	43.2 mm (1.7 in)
2016	116.8 mm (4.6 in)
2017	31.2 mm (1.2 in)
2018	74.2 mm (2.9 in)
2019	38.9 mm (1.5 in)
2020	38.4 mm (1.5 in)
2021	64.5 mm (2.5 in)
2022	47.8 mm (1.9 in)
2023	153.9 mm (6.1 in)
2024	42.7 mm (1.7 in)
2025	127.3 mm (5.0 in)
2026	47.0 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at McCook Muni AP, 1997 to 2026. The record is 186.4 mm (7.3 in) in 2023, marked on the chart; the median year is 76.5 mm (3.0 in).

Wettest five days (Rx5day) at McCook Muni AP by year
Year	Wettest five days (Rx5day)
1997	n/a
1998	46.9 mm (1.8 in)
1999	76.5 mm (3.0 in)
2000	79.5 mm (3.1 in)
2001	66.0 mm (2.6 in)
2002	47.7 mm (1.9 in)
2003	53.9 mm (2.1 in)
2004	78.8 mm (3.1 in)
2005	109.1 mm (4.3 in)
2006	50.6 mm (2.0 in)
2007	135.4 mm (5.3 in)
2008	159.3 mm (6.3 in)
2009	83.9 mm (3.3 in)
2010	61.0 mm (2.4 in)
2011	79.8 mm (3.1 in)
2012	37.4 mm (1.5 in)
2013	32.5 mm (1.3 in)
2014	108.7 mm (4.3 in)
2015	94.3 mm (3.7 in)
2016	136.8 mm (5.4 in)
2017	73.3 mm (2.9 in)
2018	95.8 mm (3.8 in)
2019	56.9 mm (2.2 in)
2020	51.1 mm (2.0 in)
2021	93.2 mm (3.7 in)
2022	51.6 mm (2.0 in)
2023	186.4 mm (7.3 in)
2024	71.7 mm (2.8 in)
2025	140.3 mm (5.5 in)
2026	56.6 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at McCook Muni AP, 1997 to 2026. The record is 83 days in 2023, marked on the chart; the median year is 42 days.

Longest dry spell (CDD) at McCook Muni AP by year
Year	Longest dry spell (CDD)
1997	n/a
1998	52 days
1999	51 days
2000	35 days
2001	26 days
2002	71 days
2003	58 days
2004	33 days
2005	35 days
2006	54 days
2007	39 days
2008	40 days
2009	43 days
2010	25 days
2011	41 days
2012	41 days
2013	32 days
2014	62 days
2015	39 days
2016	49 days
2017	66 days
2018	24 days
2019	33 days
2020	44 days
2021	40 days
2022	65 days
2023	83 days
2024	48 days
2025	62 days
2026	42 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

29 years with a frost

Across 29 years with a frost, the median last spring frost at McCook Muni AP falls on 3 May and the median first autumn frost on 11 October, which leaves a median of 160 days between them.

Fitted over all years, the growing season changes by +4.7 days per decade at this station.

Frost dates and growing season at McCook Muni AP
Measure	Median, all years	Earliest period	Recent period (1997 to 2025)	Recent against earliest	Fitted trend
Last spring frost	3 May	n/a	3 May	n/a	-2.2 days per decade
First autumn frost	11 October	n/a	11 October	n/a	+2.4 days per decade
Growing days	160 days	n/a	160 days	n/a	+4.7 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 McCook Muni AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for McCook 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 2026-10-14 (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).