Hayward Muni AP Weather Records (USW00094973)

Record envelope, standing records and threshold days for Hayward Muni AP (USW00094973), Wisconsin, United States, with 31 years of record.

Key Facts for Hayward Muni AP

Hayward Muni AP (USW00094973) is a weather station in Wisconsin, United States at 46.03 latitude and -91.44 longitude, 369 m (1,210 ft) above sea level.
The station reports from 1996 to 2026, 31 years of record.
1,464 records set at Hayward Muni AP still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Hayward Muni AP set a daily record high minimum temperature of 20.6 C (69.1 F) on 31 August 2026 (provisional).

Provisional Records

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

About the Station

Location: Wisconsin, United States, 46.03 latitude, -91.44 longitude.
Elevation: 369 m (1,210 ft).
Period of record: 1996 to 2026, 31 years.
Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

13 days at or beyond a record

The band shows the record high and record low for each calendar day at Hayward Muni AP. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Hayward Muni AP, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.6 C (51.1 F)	-39.0 C (-38.2 F)	3.3 C (37.9 F)	-39.0 C (-38.2 F)
Feb	15.6 C (60.1 F)	-38.8 C (-37.8 F)	10.0 C (50.0 F)	-23.9 C (-11.0 F)
Mar	27.2 C (81.0 F)	-34.3 C (-29.7 F)	20.6 C (69.1 F)	-25.6 C (-14.1 F)
Apr	30.0 C (86.0 F)	-18.8 C (-1.8 F)	25.0 C (77.0 F)	-12.2 C (10.0 F)
May	36.7 C (98.1 F)	-8.3 C (17.1 F)	30.6 C (87.1 F)	-5.0 C (23.0 F)
Jun	35.6 C (96.1 F)	-2.2 C (28.0 F)	31.1 C (88.0 F)	2.8 C (37.0 F)
Jul	40.6 C (105.1 F)	1.7 C (35.1 F)	33.3 C (91.9 F)	4.4 C (39.9 F)
Aug	37.8 C (100.0 F)	0.0 C (32.0 F)	29.4 C (84.9 F)	3.3 C (37.9 F)
Sep	35.0 C (95.0 F)	-5.6 C (21.9 F)	30.0 C (86.0 F)	1.1 C (34.0 F)
Oct	30.0 C (86.0 F)	-12.7 C (9.1 F)	23.9 C (75.0 F)	-2.2 C (28.0 F)
Nov	22.8 C (73.0 F)	-25.5 C (-13.9 F)	n/a	n/a
Dec	15.0 C (59.0 F)	-35.6 C (-32.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Hayward Muni AP still stand. 2007 holds the most, with 79.

Standing records at Hayward Muni AP by the year they were set
Year set	Standing records
1996	34
1997	53
1998	46
1999	45
2000	65
2001	41
2002	50
2003	66
2004	43
2005	65
2006	65
2007	79
2008	41
2009	55
2010	41
2011	33
2012	56
2013	59
2014	66
2015	32
2016	28
2017	53
2018	38
2019	24
2020	43
2021	50
2022	35
2023	48
2024	36
2025	49
2026	25

All-Time Record Progression

1 new records

1 all-time records were set at Hayward Muni AP between 24 January 2026 and 24 January 2026. Each dot is a new record.

Wettest Day of Each Month

Jul: 150.4 mm (5.9 in)

The wettest day on record for each calendar month at Hayward Muni AP. The most was 150.4 mm (5.9 in) on 11 July 2016.

Record daily precipitation for each month at Hayward Muni AP
Month	Record daily precipitation (mm)	Date
Jan	18.5 mm (0.7 in)	24 January 2010
Feb	22.4 mm (0.9 in)	20 February 2017
Mar	38.1 mm (1.5 in)	12 March 2002
Apr	75.2 mm (3.0 in)	18 April 2004
May	61.7 mm (2.4 in)	24 May 2012
Jun	98.3 mm (3.9 in)	17 June 2018
Jul	150.4 mm (5.9 in)	11 July 2016
Aug	95.5 mm (3.8 in)	2 August 2011
Sep	84.6 mm (3.3 in)	22 September 2017
Oct	120.9 mm (4.8 in)	4 October 2005
Nov	72.1 mm (2.8 in)	1 November 2000
Dec	21.1 mm (0.8 in)	4 December 2013

Period of Record Coverage

1996 to 2026

31 years of record at Hayward Muni AP, 1996 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1996, 2026.

Days with data per year at Hayward Muni AP
Year	Days with data	Share of year	Complete
1996	184	50%	No
1997	362	99%	Yes
1998	365	100%	Yes
1999	361	99%	Yes
2000	362	99%	Yes
2001	358	98%	Yes
2002	365	100%	Yes
2003	363	99%	Yes
2004	365	100%	Yes
2005	363	99%	Yes
2006	359	98%	Yes
2007	365	100%	Yes
2008	352	96%	Yes
2009	364	100%	Yes
2010	362	99%	Yes
2011	364	100%	Yes
2012	365	100%	Yes
2013	360	99%	Yes
2014	353	97%	Yes
2015	357	98%	Yes
2016	365	100%	Yes
2017	365	100%	Yes
2018	363	99%	Yes
2019	340	93%	Yes
2020	365	100%	Yes
2021	340	93%	Yes
2022	364	100%	Yes
2023	362	99%	Yes
2024	336	92%	Yes
2025	354	97%	Yes
2026	274	75%	No

Latest Records

Latest records at Hayward Muni AP
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 August 2026	Hayward Muni AP, US	daily high min (Provisional)	20.6 C (69.1 F)	2.3 C (4.1 F)	16 years	12 of 100 (Routine)
24 August 2026	Hayward Muni AP, US	daily low min (Tie, Provisional)	4.4 C (39.9 F)	tie	17 years	2 of 100 (Routine)
22 July 2026	Hayward Muni AP, US	daily low min	4.4 C (39.9 F)	1.7 C (3.1 F)	25 years	14 of 100 (Routine)
14 July 2026	Hayward Muni AP, US	daily high min (Tie)	18.3 C (64.9 F)	tie	28 years	2 of 100 (Routine)
13 July 2026	Hayward Muni AP, US	daily high min	21.1 C (70.0 F)	0.5 C (0.9 F)	12 years	7 of 100 (Routine)
29 June 2026	Hayward Muni AP, US	daily high min	21.7 C (71.1 F)	2.3 C (4.1 F)	24 years	14 of 100 (Routine)
19 June 2026	Hayward Muni AP, US	daily low max	18.9 C (66.0 F)	0.5 C (0.9 F)	27 years	12 of 100 (Routine)
17 June 2026	Hayward Muni AP, US	daily low max	16.7 C (62.1 F)	2.2 C (4.0 F)	25 years	14 of 100 (Routine)
6 May 2026	Hayward Muni AP, US	daily low max	6.1 C (43.0 F)	3.3 C (5.9 F)	24 years	15 of 100 (Routine)
26 April 2026	Hayward Muni AP, US	daily high min (Tie)	5.6 C (42.1 F)	tie	1 year	0 of 100 (Routine)
23 April 2026	Hayward Muni AP, US	daily high min	14.4 C (57.9 F)	6.1 C (11.0 F)	4 years	15 of 100 (Routine)
13 April 2026	Hayward Muni AP, US	daily high min (Tie)	8.9 C (48.0 F)	tie	0 years	0 of 100 (Routine)
22 March 2026	Hayward Muni AP, US	daily high max	16.1 C (61.0 F)	0.5 C (0.9 F)	13 years	7 of 100 (Routine)
21 March 2026	Hayward Muni AP, US	daily high max	20.6 C (69.1 F)	2.8 C (5.0 F)	13 years	11 of 100 (Routine)
17 March 2026	Hayward Muni AP, US	daily low max	-8.9 C (16.0 F)	2.9 C (5.2 F)	3 years	7 of 100 (Routine)
17 March 2026	Hayward Muni AP, US	daily low min	-25.6 C (-14.1 F)	0.1 C (0.2 F)	12 years	6 of 100 (Routine)
9 March 2026	Hayward Muni AP, US	daily high min	5.6 C (42.1 F)	5.0 C (9.0 F)	9 years	11 of 100 (Routine)
3 March 2026	Hayward Muni AP, US	daily high min	0.0 C (32.0 F)	1.0 C (1.8 F)	1 year	4 of 100 (Routine)
15 February 2026	Hayward Muni AP, US	daily high max	8.3 C (46.9 F)	2.7 C (4.9 F)	28 years	15 of 100 (Routine)
14 February 2026	Hayward Muni AP, US	daily high max	8.9 C (48.0 F)	2.8 C (5.0 F)	8 years	9 of 100 (Routine)

Climate Trend

26 complete years, 1997 to 2025

One stripe for each of 26 complete years at Hayward Muni AP, 1997 to 2025. Blue stripes are years cooler than the station's own mean of 5.4 C (41.8 F); red stripes are warmer. The coolest year was 2014, at 3.3 C (37.9 F), and the warmest was 2006, at 7.8 C (46.1 F). The strongest colour marks a difference of 2.4 C (4.3 F).

Annual mean temperature at Hayward Muni AP as warming stripes, 1997 to 2025
Year	Annual mean temperature	Difference from the station mean
1997	4.1 C	-1.36 C
1998	6.8 C	+1.35 C
1999	5.6 C	+0.18 C
2000	4.7 C	-0.70 C
2001	5.3 C	-0.13 C
2002	4.9 C	-0.56 C
2003	4.2 C	-1.28 C
2004	5.0 C	-0.45 C
2005	6.7 C	+1.24 C
2006	7.8 C	+2.40 C
2007	6.9 C	+1.47 C
2008	4.9 C	-0.53 C
2009	4.1 C	-1.33 C
2010	6.0 C	+0.52 C
2011	5.4 C	-0.02 C
2012	6.9 C	+1.43 C
2013	3.7 C	-1.74 C
2014	3.3 C	-2.16 C
2015	5.9 C	+0.46 C
2016	6.7 C	+1.29 C
2017	5.6 C	+0.17 C
2018	5.0 C	-0.48 C
2020	5.6 C	+0.20 C
2022	4.3 C	-1.12 C
2023	6.4 C	+1.00 C
2025	5.7 C	+0.23 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 Hayward Muni AP: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	2006	33.3 C (91.9 F)	31
Coldest night (TNn)	-39.0 C (-38.2 F)	2026	-33.2 C (-27.8 F)	31
Wettest day (Rx1day)	150.4 mm (5.9 in)	2016	52.8 mm (2.1 in)	29
Wettest five days (Rx5day)	173.0 mm (6.8 in)	2016	88.7 mm (3.5 in)	28
Longest dry spell (CDD)	45 days	2024	27 days	29

Hottest day (TXx)

The hottest day of the year at Hayward Muni AP, 1996 to 2026. The record is 40.6 C (105.1 F) in 2006, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Hayward Muni AP by year
Year	Hottest day (TXx)
1996	31.1 C (88.0 F)
1997	32.2 C (90.0 F)
1998	32.2 C (90.0 F)
1999	35.6 C (96.1 F)
2000	31.7 C (89.1 F)
2001	33.9 C (93.0 F)
2002	32.8 C (91.0 F)
2003	32.2 C (90.0 F)
2004	33.3 C (91.9 F)
2005	37.8 C (100.0 F)
2006	40.6 C (105.1 F)
2007	35.0 C (95.0 F)
2008	32.8 C (91.0 F)
2009	33.3 C (91.9 F)
2010	32.8 C (91.0 F)
2011	34.4 C (93.9 F)
2012	35.0 C (95.0 F)
2013	35.6 C (96.1 F)
2014	31.7 C (89.1 F)
2015	33.3 C (91.9 F)
2016	32.2 C (90.0 F)
2017	33.3 C (91.9 F)
2018	35.6 C (96.1 F)
2019	31.7 C (89.1 F)
2020	33.3 C (91.9 F)
2021	35.6 C (96.1 F)
2022	35.6 C (96.1 F)
2023	35.0 C (95.0 F)
2024	33.3 C (91.9 F)
2025	32.8 C (91.0 F)
2026	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Hayward Muni AP, 1996 to 2026. The record is -39.0 C (-38.2 F) in 2026, marked on the chart; the median year is -33.2 C (-27.8 F).

Coldest night (TNn) at Hayward Muni AP by year
Year	Coldest night (TNn)
1996	-35.6 C (-32.1 F)
1997	-37.8 C (-36.0 F)
1998	-32.2 C (-26.0 F)
1999	-33.3 C (-27.9 F)
2000	-33.9 C (-29.0 F)
2001	-31.1 C (-24.0 F)
2002	-27.2 C (-17.0 F)
2003	-32.2 C (-26.0 F)
2004	-34.4 C (-29.9 F)
2005	-35.0 C (-31.0 F)
2006	-32.1 C (-25.8 F)
2007	-32.7 C (-26.9 F)
2008	-31.6 C (-24.9 F)
2009	-36.0 C (-32.8 F)
2010	-33.8 C (-28.8 F)
2011	-35.5 C (-31.9 F)
2012	-29.3 C (-20.7 F)
2013	-33.2 C (-27.8 F)
2014	-34.9 C (-30.8 F)
2015	-34.9 C (-30.8 F)
2016	-29.9 C (-21.8 F)
2017	-31.6 C (-24.9 F)
2018	-31.6 C (-24.9 F)
2019	-36.0 C (-32.8 F)
2020	-29.9 C (-21.8 F)
2021	-38.8 C (-37.8 F)
2022	-34.3 C (-29.7 F)
2023	-31.0 C (-23.8 F)
2024	-27.1 C (-16.8 F)
2025	-33.2 C (-27.8 F)
2026	-39.0 C (-38.2 F)

Wettest day (Rx1day)

The wettest day of the year at Hayward Muni AP, 1996 to 2026. The record is 150.4 mm (5.9 in) in 2016, marked on the chart; the median year is 52.8 mm (2.1 in).

Wettest day (Rx1day) at Hayward Muni AP by year
Year	Wettest day (Rx1day)
1996	n/a
1997	n/a
1998	35.3 mm (1.4 in)
1999	60.7 mm (2.4 in)
2000	75.7 mm (3.0 in)
2001	42.7 mm (1.7 in)
2002	69.3 mm (2.7 in)
2003	40.4 mm (1.6 in)
2004	75.2 mm (3.0 in)
2005	120.9 mm (4.8 in)
2006	32.0 mm (1.3 in)
2007	81.8 mm (3.2 in)
2008	37.6 mm (1.5 in)
2009	26.9 mm (1.1 in)
2010	79.5 mm (3.1 in)
2011	95.5 mm (3.8 in)
2012	61.7 mm (2.4 in)
2013	88.6 mm (3.5 in)
2014	38.1 mm (1.5 in)
2015	68.8 mm (2.7 in)
2016	150.4 mm (5.9 in)
2017	84.6 mm (3.3 in)
2018	98.3 mm (3.9 in)
2019	47.5 mm (1.9 in)
2020	51.3 mm (2.0 in)
2021	52.8 mm (2.1 in)
2022	36.6 mm (1.4 in)
2023	46.0 mm (1.8 in)
2024	38.6 mm (1.5 in)
2025	34.0 mm (1.3 in)
2026	43.0 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Hayward Muni AP, 1996 to 2026. The record is 173.0 mm (6.8 in) in 2016, marked on the chart; the median year is 88.7 mm (3.5 in).

Wettest five days (Rx5day) at Hayward Muni AP by year
Year	Wettest five days (Rx5day)
1996	n/a
1997	n/a
1998	70.9 mm (2.8 in)
1999	69.6 mm (2.7 in)
2000	85.9 mm (3.4 in)
2001	81.8 mm (3.2 in)
2002	93.2 mm (3.7 in)
2003	64.3 mm (2.5 in)
2004	89.9 mm (3.5 in)
2005	142.8 mm (5.6 in)
2006	117.1 mm (4.6 in)
2007	127.8 mm (5.0 in)
2008	59.5 mm (2.3 in)
2009	51.0 mm (2.0 in)
2010	95.0 mm (3.7 in)
2011	120.1 mm (4.7 in)
2012	87.4 mm (3.4 in)
2013	109.4 mm (4.3 in)
2014	82.1 mm (3.2 in)
2015	96.5 mm (3.8 in)
2016	173.0 mm (6.8 in)
2017	106.0 mm (4.2 in)
2018	139.5 mm (5.5 in)
2019	86.3 mm (3.4 in)
2020	104.8 mm (4.1 in)
2021	114.0 mm (4.5 in)
2022	57.9 mm (2.3 in)
2023	64.2 mm (2.5 in)
2024	77.3 mm (3.0 in)
2025	51.3 mm (2.0 in)
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Hayward Muni AP, 1996 to 2026. The record is 45 days in 2024, marked on the chart; the median year is 27 days.

Longest dry spell (CDD) at Hayward Muni AP by year
Year	Longest dry spell (CDD)
1996	n/a
1997	n/a
1998	27 days
1999	30 days
2000	31 days
2001	17 days
2002	27 days
2003	30 days
2004	35 days
2005	19 days
2006	18 days
2007	40 days
2008	30 days
2009	22 days
2010	42 days
2011	19 days
2012	21 days
2013	13 days
2014	24 days
2015	20 days
2016	22 days
2017	18 days
2018	38 days
2019	27 days
2020	35 days
2021	25 days
2022	34 days
2023	36 days
2024	45 days
2025	41 days
2026	2 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

26 years with a frost

Across 26 years with a frost, the median last spring frost at Hayward Muni AP falls on 25 May and the median first autumn frost on 16 September, which leaves a median of 116 days between them.

Fitted over all years, the growing season changes by +8.9 days per decade at this station.

Frost dates and growing season at Hayward Muni AP
Measure	Median, all years	Earliest period	Recent period (1997 to 2025)	Recent against earliest	Fitted trend
Last spring frost	25 May	n/a	25 May	n/a	-5.1 days per decade
First autumn frost	16 September	n/a	16 September	n/a	+3.8 days per decade
Growing days	116 days	n/a	116 days	n/a	+8.9 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 Hayward Muni AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hayward 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 2026-10-13 (13 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).