Lapeer Wwtp Weather Records (USC00204655)

Record envelope, standing records and threshold days for Lapeer Wwtp (USC00204655), Michigan, United States, with 79 years of record.

Key Facts for Lapeer Wwtp

Lapeer Wwtp (USC00204655) is a weather station in Michigan, United States at 43.06 latitude and -83.31 longitude, 250 m (820 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
1,464 records set at Lapeer Wwtp still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Lapeer Wwtp set a daily record high maximum temperature of 30.0 C (86.0 F) on 13 October 2026 (provisional).

Provisional Records

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

About the Station

Location: Michigan, United States, 43.06 latitude, -83.31 longitude.
Elevation: 250 m (820 ft).
Period of record: 1948 to 2026, 79 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

10 days at or beyond a record

The band shows the record high and record low for each calendar day at Lapeer Wwtp. The lines show the 2026 daily maximum and minimum. 10 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Lapeer Wwtp, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.9 C (66.0 F)	-32.2 C (-26.0 F)	16.1 C (61.0 F)	-27.2 C (-17.0 F)
Feb	23.3 C (73.9 F)	-31.1 C (-24.0 F)	13.9 C (57.0 F)	-22.2 C (-8.0 F)
Mar	30.6 C (87.1 F)	-27.2 C (-17.0 F)	23.9 C (75.0 F)	-12.2 C (10.0 F)
Apr	30.6 C (87.1 F)	-15.6 C (3.9 F)	27.2 C (81.0 F)	-5.0 C (23.0 F)
May	33.9 C (93.0 F)	-5.0 C (23.0 F)	32.2 C (90.0 F)	-0.6 C (30.9 F)
Jun	37.8 C (100.0 F)	-0.6 C (30.9 F)	32.2 C (90.0 F)	6.7 C (44.1 F)
Jul	37.8 C (100.0 F)	2.2 C (36.0 F)	37.2 C (99.0 F)	9.4 C (48.9 F)
Aug	37.2 C (99.0 F)	-1.7 C (28.9 F)	31.7 C (89.1 F)	11.7 C (53.1 F)
Sep	36.7 C (98.1 F)	-3.9 C (25.0 F)	34.4 C (93.9 F)	4.4 C (39.9 F)
Oct	31.7 C (89.1 F)	-8.3 C (17.1 F)	30.0 C (86.0 F)	1.7 C (35.1 F)
Nov	26.7 C (80.1 F)	-17.2 C (1.0 F)	n/a	n/a
Dec	20.6 C (69.1 F)	-26.1 C (-15.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Lapeer Wwtp still stand. 1976 holds the most, with 38.

Standing records at Lapeer Wwtp by the year they were set
Year set	Standing records
1949	5
1950	28
1951	28
1952	16
1953	29
1954	14
1955	27
1956	17
1957	13
1958	10
1959	22
1960	25
1961	12
1962	26
1963	34
1964	36
1965	37
1966	22
1967	22
1968	19
1969	7
1970	16
1971	15
1972	23
1973	18
1974	20
1975	15
1976	38
1977	29
1978	16
1979	33
1980	13
1981	23
1982	26
1983	20
1984	16
1985	12
1986	14
1987	15
1988	30
1989	24
1990	21
1991	25
1992	11
1993	2
1994	20
1995	20
1996	10
1997	17
1998	18
1999	19
2000	28
2001	18
2002	19
2003	7
2004	12
2005	13
2006	16
2007	12
2008	7
2010	11
2011	22
2012	27
2013	15
2014	30
2015	28
2016	13
2017	23
2018	21
2019	15
2020	13
2021	18
2022	12
2023	14
2024	14
2025	17
2026	11

All-Time Record Progression

9 new records

9 all-time records were set at Lapeer Wwtp between 11 January 1984 and 24 June 2025. Each dot is a new record.

When Lapeer Wwtp set new all-time records
Date	Kind	Detail
1984-01-11	Record low minimum temperature	Record low minimum temperature -32.2 C (-26.0 F)
1987-07-20	Record high minimum temperature	Record high minimum temperature 25.6 C (78.1 F)
1988-06-26	Record high maximum temperature	Record high maximum temperature 37.8 C (100.0 F)
1989-07-09	Record high minimum temperature	Record high minimum temperature 26.1 C (79.0 F)
1994-01-16	Record low maximum temperature	Record low maximum temperature -16.7 C (1.9 F)
1994-01-19	Record low maximum temperature	Record low maximum temperature -19.4 C (-2.9 F)
2000-12-12	Record daily snowfall	Record daily snowfall 35.6 cm (14.0 in)
2014-02-06	Record snow depth	Record snow depth 53.3 cm (21.0 in)
2025-06-24	Record high minimum temperature	Record high minimum temperature 26.7 C (80.1 F)

Wettest Day of Each Month

Jul: 134.1 mm (5.3 in)

The wettest day on record for each calendar month at Lapeer Wwtp. The most was 134.1 mm (5.3 in) on 21 July 1948.

Record daily precipitation for each month at Lapeer Wwtp
Month	Record daily precipitation (mm)	Date
Jan	38.9 mm (1.5 in)	11 January 2020
Feb	69.9 mm (2.8 in)	16 February 1954
Mar	39.9 mm (1.6 in)	26 March 2021
Apr	64.5 mm (2.5 in)	10 April 2013
May	66.8 mm (2.6 in)	21 May 1996
Jun	75.2 mm (3.0 in)	18 June 1996
Jul	134.1 mm (5.3 in)	21 July 1948
Aug	68.8 mm (2.7 in)	1 August 1979
Sep	94.5 mm (3.7 in)	4 September 1981
Oct	89.7 mm (3.5 in)	1 October 1981
Nov	51.3 mm (2.0 in)	17 November 1952
Dec	48.0 mm (1.9 in)	29 December 2025

Period of Record Coverage

1949 to 2026

78 years of record at Lapeer Wwtp, 1949 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 1949, 1975, 1982, 1983, 1984, 1993, 2008, 2009 and others.

Days with data per year at Lapeer Wwtp
Year	Days with data	Share of year	Complete
1949	31	8%	No
1950	355	97%	Yes
1951	360	99%	Yes
1952	365	100%	Yes
1953	362	99%	Yes
1954	363	99%	Yes
1955	359	98%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	356	98%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	362	99%	Yes
1962	362	99%	Yes
1963	365	100%	Yes
1964	365	100%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	363	99%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	364	100%	Yes
1972	365	100%	Yes
1973	363	99%	Yes
1974	357	98%	Yes
1975	294	81%	No
1976	362	99%	Yes
1977	361	99%	Yes
1978	337	92%	Yes
1979	364	100%	Yes
1980	335	92%	Yes
1981	359	98%	Yes
1982	325	89%	No
1983	300	82%	No
1984	268	73%	No
1985	348	95%	Yes
1986	361	99%	Yes
1987	360	99%	Yes
1988	353	96%	Yes
1989	358	98%	Yes
1990	355	97%	Yes
1991	356	98%	Yes
1992	354	97%	Yes
1993	61	17%	No
1994	362	99%	Yes
1995	363	99%	Yes
1996	334	91%	Yes
1997	363	99%	Yes
1998	358	98%	Yes
1999	364	100%	Yes
2000	364	99%	Yes
2001	365	100%	Yes
2002	362	99%	Yes
2003	365	100%	Yes
2004	365	100%	Yes
2005	335	92%	Yes
2006	364	100%	Yes
2007	334	92%	Yes
2008	212	58%	No
2009	61	17%	No
2010	362	99%	Yes
2011	350	96%	Yes
2012	356	97%	Yes
2013	363	99%	Yes
2014	350	96%	Yes
2015	356	98%	Yes
2016	364	99%	Yes
2017	361	99%	Yes
2018	363	99%	Yes
2019	360	99%	Yes
2020	364	99%	Yes
2021	363	99%	Yes
2022	357	98%	Yes
2023	363	99%	Yes
2024	365	100%	Yes
2025	364	100%	Yes
2026	286	78%	No

Latest Records

Latest records at Lapeer Wwtp
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 October 2026	Lapeer Wwtp, US	daily high max (Provisional)	30.0 C (86.0 F)	2.2 C (4.0 F)	51 years	25 of 100 (Routine)
2 September 2026	Lapeer Wwtp, US	daily high min (Tie, Provisional)	21.1 C (70.0 F)	tie	16 years	2 of 100 (Routine)
15 July 2026	Lapeer Wwtp, US	daily high min (Tie)	23.3 C (73.9 F)	tie	48 years	5 of 100 (Routine)
15 July 2026	Lapeer Wwtp, US	daily high max (Tie)	37.2 C (99.0 F)	tie	31 years	4 of 100 (Routine)
3 July 2026	Lapeer Wwtp, US	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	52 years	23 of 100 (Routine)
2 July 2026	Lapeer Wwtp, US	all-time high min (Tie)	26.7 C (80.1 F)	tie	1 year	6 of 100 (Routine)
19 May 2026	Lapeer Wwtp, US	daily high min	18.3 C (64.9 F)	1.1 C (2.0 F)	55 years	25 of 100 (Routine)
19 May 2026	Lapeer Wwtp, US	daily high max	32.2 C (90.0 F)	1.1 C (2.0 F)	29 years	16 of 100 (Routine)
15 April 2026	Lapeer Wwtp, US	daily high min (Tie)	14.4 C (57.9 F)	tie	49 years	5 of 100 (Routine)
4 April 2026	Lapeer Wwtp, US	daily rain	55.4 mm (2.2 in)	13.2 mm (0.5 in)	3 years	22 of 100 (Routine)
1 April 2026	Lapeer Wwtp, US	daily high max (Tie)	25.0 C (77.0 F)	tie	40 years	4 of 100 (Routine)
10 March 2026	Lapeer Wwtp, US	daily high max	23.3 C (73.9 F)	2.2 C (4.0 F)	9 years	12 of 100 (Routine)
19 February 2026	Lapeer Wwtp, US	daily rain	11.2 mm (0.4 in)	0.8 mm (0.03 in)	52 years	20 of 100 (Routine)
17 February 2026	Lapeer Wwtp, US	daily high max	13.9 C (57.0 F)	2.2 C (4.0 F)	27 years	18 of 100 (Routine)
31 January 2026	Lapeer Wwtp, US	daily low min	-26.7 C (-16.1 F)	2.3 C (4.1 F)	7 years	12 of 100 (Routine)
25 January 2026	Lapeer Wwtp, US	daily low min	-27.2 C (-17.0 F)	0.5 C (0.9 F)	22 years	13 of 100 (Routine)
24 January 2026	Lapeer Wwtp, US	daily low max	-15.6 C (3.9 F)	1.2 C (2.2 F)	63 years	27 of 100 (Routine)
24 January 2026	Lapeer Wwtp, US	daily low min	-26.7 C (-16.1 F)	0.6 C (1.1 F)	63 years	25 of 100 (Routine)
10 January 2026	Lapeer Wwtp, US	daily high max	16.1 C (61.0 F)	2.8 C (5.0 F)	76 years	33 of 100 (Routine)
7 January 2026	Lapeer Wwtp, US	daily rain	19.1 mm (0.8 in)	12.7 mm (0.5 in)	31 years	20 of 100 (Routine)

Climate Trend

63 complete years, 1950 to 2025

One stripe for each of 63 complete years at Lapeer Wwtp, 1950 to 2025. Blue stripes are years cooler than the station's own mean of 8.7 C (47.6 F); red stripes are warmer. The coolest year was 1997, at 7.4 C (45.3 F), and the warmest was 2024, at 10.8 C (51.4 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Lapeer Wwtp as warming stripes, 1950 to 2025
Year	Annual mean temperature	Difference from the station mean
1950	7.7 C	-0.99 C
1951	8.1 C	-0.62 C
1952	8.8 C	+0.12 C
1953	9.5 C	+0.85 C
1954	8.9 C	+0.21 C
1955	9.4 C	+0.67 C
1956	8.3 C	-0.34 C
1957	8.3 C	-0.36 C
1959	8.6 C	-0.04 C
1960	7.7 C	-0.98 C
1961	8.4 C	-0.28 C
1962	7.6 C	-1.07 C
1963	8.1 C	-0.57 C
1964	9.3 C	+0.58 C
1965	8.2 C	-0.46 C
1966	8.1 C	-0.55 C
1967	8.0 C	-0.65 C
1968	8.7 C	+0.05 C
1969	8.3 C	-0.35 C
1970	8.6 C	-0.05 C
1971	9.0 C	+0.36 C
1972	7.7 C	-0.94 C
1973	9.5 C	+0.86 C
1974	8.2 C	-0.47 C
1977	7.5 C	-1.16 C
1979	8.1 C	-0.55 C
1981	7.9 C	-0.75 C
1982	7.7 C	-1.02 C
1983	7.9 C	-0.79 C
1985	8.2 C	-0.53 C
1986	8.5 C	-0.16 C
1987	9.9 C	+1.20 C
1988	9.4 C	+0.74 C
1989	8.4 C	-0.29 C
1990	9.7 C	+1.06 C
1991	9.9 C	+1.19 C
1992	8.2 C	-0.45 C
1994	7.6 C	-1.12 C
1995	7.6 C	-1.04 C
1997	7.4 C	-1.27 C
1998	10.2 C	+1.54 C
1999	8.9 C	+0.22 C
2000	8.0 C	-0.68 C
2001	9.2 C	+0.50 C
2002	8.8 C	+0.08 C
2003	7.5 C	-1.15 C
2004	8.1 C	-0.57 C
2006	9.3 C	+0.65 C
2010	9.3 C	+0.63 C
2011	9.0 C	+0.29 C
2012	10.4 C	+1.75 C
2013	8.1 C	-0.58 C
2015	8.4 C	-0.30 C
2016	9.8 C	+1.09 C
2017	9.3 C	+0.65 C
2018	8.8 C	+0.14 C
2019	8.5 C	-0.23 C
2020	9.6 C	+0.89 C
2021	10.0 C	+1.27 C
2022	8.9 C	+0.19 C
2023	10.0 C	+1.31 C
2024	10.8 C	+2.09 C
2025	9.0 C	+0.32 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1950 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 63 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Lapeer Wwtp
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.2) per decade	0.2 F (0.1 to 0.4) per decade	1950 to 2025	63	Rise
Mean daily maximum	0.07 C (-0.02 to 0.16) per decade	0.12 F (-0.04 to 0.28) per decade	1950 to 2025	63	Not clearly different from zero
Mean daily minimum	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.5) per decade	1950 to 2025	63	Rise

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

1948 to 2026

Yearly extremes at Lapeer Wwtp: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1988	34.2 C (93.5 F)	78
Coldest night (TNn)	-32.2 C (-26.0 F)	1984	-23.9 C (-11.0 F)	78
Wettest day (Rx1day)	134.1 mm (5.3 in)	1948	47.0 mm (1.9 in)	79
Wettest five days (Rx5day)	183.7 mm (7.2 in)	1985	75.3 mm (3.0 in)	79
Longest dry spell (CDD)	48 days	1969	17 days	79

Hottest day (TXx)

The hottest day of the year at Lapeer Wwtp, 1948 to 2026. The record is 37.8 C (100.0 F) in 1988, marked on the chart; the median year is 34.2 C (93.5 F).

Hottest day (TXx) at Lapeer Wwtp by year
Year	Hottest day (TXx)
1948	n/a
1949	16.7 C (62.1 F)
1950	31.7 C (89.1 F)
1951	32.8 C (91.0 F)
1952	35.6 C (96.1 F)
1953	36.7 C (98.1 F)
1954	34.4 C (93.9 F)
1955	36.7 C (98.1 F)
1956	34.4 C (93.9 F)
1957	33.3 C (91.9 F)
1958	31.7 C (89.1 F)
1959	33.3 C (91.9 F)
1960	35.0 C (95.0 F)
1961	33.3 C (91.9 F)
1962	32.8 C (91.0 F)
1963	36.1 C (97.0 F)
1964	35.6 C (96.1 F)
1965	36.1 C (97.0 F)
1966	36.1 C (97.0 F)
1967	32.2 C (90.0 F)
1968	33.9 C (93.0 F)
1969	33.3 C (91.9 F)
1970	32.8 C (91.0 F)
1971	37.2 C (99.0 F)
1972	33.9 C (93.0 F)
1973	33.9 C (93.0 F)
1974	33.9 C (93.0 F)
1975	35.6 C (96.1 F)
1976	32.8 C (91.0 F)
1977	35.6 C (96.1 F)
1978	33.9 C (93.0 F)
1979	34.4 C (93.9 F)
1980	32.2 C (90.0 F)
1981	33.9 C (93.0 F)
1982	32.2 C (90.0 F)
1983	33.9 C (93.0 F)
1984	33.3 C (91.9 F)
1985	31.7 C (89.1 F)
1986	32.8 C (91.0 F)
1987	35.6 C (96.1 F)
1988	37.8 C (100.0 F)
1989	34.4 C (93.9 F)
1990	34.4 C (93.9 F)
1991	33.3 C (91.9 F)
1992	32.2 C (90.0 F)
1993	15.6 C (60.1 F)
1994	35.0 C (95.0 F)
1995	37.2 C (99.0 F)
1996	34.4 C (93.9 F)
1997	35.0 C (95.0 F)
1998	35.0 C (95.0 F)
1999	33.9 C (93.0 F)
2000	32.2 C (90.0 F)
2001	37.2 C (99.0 F)
2002	34.4 C (93.9 F)
2003	35.6 C (96.1 F)
2004	31.7 C (89.1 F)
2005	32.8 C (91.0 F)
2006	36.1 C (97.0 F)
2007	35.0 C (95.0 F)
2008	33.3 C (91.9 F)
2009	20.0 C (68.0 F)
2010	34.4 C (93.9 F)
2011	36.1 C (97.0 F)
2012	37.2 C (99.0 F)
2013	35.0 C (95.0 F)
2014	33.9 C (93.0 F)
2015	32.8 C (91.0 F)
2016	34.4 C (93.9 F)
2017	33.9 C (93.0 F)
2018	34.4 C (93.9 F)
2019	34.4 C (93.9 F)
2020	35.0 C (95.0 F)
2021	32.8 C (91.0 F)
2022	35.6 C (96.1 F)
2023	33.3 C (91.9 F)
2024	33.9 C (93.0 F)
2025	35.0 C (95.0 F)
2026	37.2 C (99.0 F)

Coldest night (TNn)

The coldest night of the year at Lapeer Wwtp, 1948 to 2026. The record is -32.2 C (-26.0 F) in 1984, marked on the chart; the median year is -23.9 C (-11.0 F).

Coldest night (TNn) at Lapeer Wwtp by year
Year	Coldest night (TNn)
1948	n/a
1949	-16.7 C (1.9 F)
1950	-22.2 C (-8.0 F)
1951	-27.8 C (-18.0 F)
1952	-17.8 C (0.0 F)
1953	-17.8 C (0.0 F)
1954	-21.7 C (-7.1 F)
1955	-22.2 C (-8.0 F)
1956	-20.6 C (-5.1 F)
1957	-22.8 C (-9.0 F)
1958	-25.0 C (-13.0 F)
1959	-26.1 C (-15.0 F)
1960	-24.4 C (-11.9 F)
1961	-26.1 C (-15.0 F)
1962	-28.9 C (-20.0 F)
1963	-27.2 C (-17.0 F)
1964	-25.6 C (-14.1 F)
1965	-23.3 C (-9.9 F)
1966	-26.1 C (-15.0 F)
1967	-29.4 C (-20.9 F)
1968	-24.4 C (-11.9 F)
1969	-21.1 C (-6.0 F)
1970	-25.0 C (-13.0 F)
1971	-22.8 C (-9.0 F)
1972	-26.7 C (-16.1 F)
1973	-26.1 C (-15.0 F)
1974	-27.2 C (-17.0 F)
1975	-23.9 C (-11.0 F)
1976	-30.6 C (-23.1 F)
1977	-29.4 C (-20.9 F)
1978	-26.1 C (-15.0 F)
1979	-28.3 C (-18.9 F)
1980	-24.4 C (-11.9 F)
1981	-26.7 C (-16.1 F)
1982	-27.8 C (-18.0 F)
1983	-22.2 C (-8.0 F)
1984	-32.2 C (-26.0 F)
1985	-25.0 C (-13.0 F)
1986	-23.3 C (-9.9 F)
1987	-21.1 C (-6.0 F)
1988	-20.0 C (-4.0 F)
1989	-21.1 C (-6.0 F)
1990	-20.6 C (-5.1 F)
1991	-20.6 C (-5.1 F)
1992	-22.8 C (-9.0 F)
1993	-21.7 C (-7.1 F)
1994	-31.1 C (-24.0 F)
1995	-22.8 C (-9.0 F)
1996	-23.9 C (-11.0 F)
1997	-22.2 C (-8.0 F)
1998	-15.0 C (5.0 F)
1999	-22.2 C (-8.0 F)
2000	-26.1 C (-15.0 F)
2001	-23.3 C (-9.9 F)
2002	-20.0 C (-4.0 F)
2003	-26.7 C (-16.1 F)
2004	-26.7 C (-16.1 F)
2005	-25.0 C (-13.0 F)
2006	-17.8 C (0.0 F)
2007	-21.7 C (-7.1 F)
2008	-21.7 C (-7.1 F)
2009	-13.9 C (7.0 F)
2010	-21.1 C (-6.0 F)
2011	-23.9 C (-11.0 F)
2012	-16.7 C (1.9 F)
2013	-19.4 C (-2.9 F)
2014	-27.8 C (-18.0 F)
2015	-31.1 C (-24.0 F)
2016	-22.2 C (-8.0 F)
2017	-26.1 C (-15.0 F)
2018	-25.6 C (-14.1 F)
2019	-24.4 C (-11.9 F)
2020	-18.9 C (-2.0 F)
2021	-25.6 C (-14.1 F)
2022	-23.9 C (-11.0 F)
2023	-18.9 C (-2.0 F)
2024	-19.4 C (-2.9 F)
2025	-20.6 C (-5.1 F)
2026	-27.2 C (-17.0 F)

Wettest day (Rx1day)

The wettest day of the year at Lapeer Wwtp, 1948 to 2026. The record is 134.1 mm (5.3 in) in 1948, marked on the chart; the median year is 47.0 mm (1.9 in).

Wettest day (Rx1day) at Lapeer Wwtp by year
Year	Wettest day (Rx1day)
1948	134.1 mm (5.3 in)
1949	35.6 mm (1.4 in)
1950	59.7 mm (2.4 in)
1951	40.1 mm (1.6 in)
1952	51.3 mm (2.0 in)
1953	40.6 mm (1.6 in)
1954	69.9 mm (2.8 in)
1955	40.6 mm (1.6 in)
1956	55.1 mm (2.2 in)
1957	72.6 mm (2.9 in)
1958	50.8 mm (2.0 in)
1959	44.5 mm (1.8 in)
1960	59.9 mm (2.4 in)
1961	47.0 mm (1.9 in)
1962	72.4 mm (2.9 in)
1963	38.6 mm (1.5 in)
1964	39.9 mm (1.6 in)
1965	40.9 mm (1.6 in)
1966	39.6 mm (1.6 in)
1967	37.8 mm (1.5 in)
1968	39.4 mm (1.6 in)
1969	31.5 mm (1.2 in)
1970	41.9 mm (1.6 in)
1971	34.0 mm (1.3 in)
1972	40.6 mm (1.6 in)
1973	41.7 mm (1.6 in)
1974	43.9 mm (1.7 in)
1975	52.3 mm (2.1 in)
1976	41.7 mm (1.6 in)
1977	33.0 mm (1.3 in)
1978	28.7 mm (1.1 in)
1979	68.8 mm (2.7 in)
1980	47.0 mm (1.9 in)
1981	94.5 mm (3.7 in)
1982	52.3 mm (2.1 in)
1983	52.8 mm (2.1 in)
1984	52.6 mm (2.1 in)
1985	72.4 mm (2.9 in)
1986	86.9 mm (3.4 in)
1987	35.6 mm (1.4 in)
1988	54.1 mm (2.1 in)
1989	39.4 mm (1.6 in)
1990	41.9 mm (1.6 in)
1991	36.1 mm (1.4 in)
1992	55.4 mm (2.2 in)
1993	12.2 mm (0.5 in)
1994	58.9 mm (2.3 in)
1995	44.7 mm (1.8 in)
1996	75.2 mm (3.0 in)
1997	53.6 mm (2.1 in)
1998	33.0 mm (1.3 in)
1999	32.8 mm (1.3 in)
2000	61.5 mm (2.4 in)
2001	47.0 mm (1.9 in)
2002	26.7 mm (1.1 in)
2003	32.0 mm (1.3 in)
2004	43.9 mm (1.7 in)
2005	76.5 mm (3.0 in)
2006	60.7 mm (2.4 in)
2007	30.7 mm (1.2 in)
2008	91.4 mm (3.6 in)
2009	14.2 mm (0.6 in)
2010	39.1 mm (1.5 in)
2011	59.7 mm (2.4 in)
2012	31.2 mm (1.2 in)
2013	69.1 mm (2.7 in)
2014	44.7 mm (1.8 in)
2015	42.4 mm (1.7 in)
2016	43.2 mm (1.7 in)
2017	58.2 mm (2.3 in)
2018	43.7 mm (1.7 in)
2019	56.6 mm (2.2 in)
2020	52.1 mm (2.1 in)
2021	52.6 mm (2.1 in)
2022	57.2 mm (2.3 in)
2023	81.3 mm (3.2 in)
2024	93.2 mm (3.7 in)
2025	49.0 mm (1.9 in)
2026	55.4 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Lapeer Wwtp, 1948 to 2026. The record is 183.7 mm (7.2 in) in 1985, marked on the chart; the median year is 75.3 mm (3.0 in).

Wettest five days (Rx5day) at Lapeer Wwtp by year
Year	Wettest five days (Rx5day)
1948	137.4 mm (5.4 in)
1949	48.2 mm (1.9 in)
1950	102.7 mm (4.0 in)
1951	63.5 mm (2.5 in)
1952	71.4 mm (2.8 in)
1953	70.1 mm (2.8 in)
1954	71.7 mm (2.8 in)
1955	49.5 mm (1.9 in)
1956	94.1 mm (3.7 in)
1957	72.6 mm (2.9 in)
1958	53.1 mm (2.1 in)
1959	77.7 mm (3.1 in)
1960	80.2 mm (3.2 in)
1961	72.7 mm (2.9 in)
1962	125.1 mm (4.9 in)
1963	43.5 mm (1.7 in)
1964	47.8 mm (1.9 in)
1965	47.0 mm (1.9 in)
1966	50.5 mm (2.0 in)
1967	77.5 mm (3.1 in)
1968	103.9 mm (4.1 in)
1969	51.8 mm (2.0 in)
1970	57.0 mm (2.2 in)
1971	53.3 mm (2.1 in)
1972	66.1 mm (2.6 in)
1973	71.4 mm (2.8 in)
1974	85.4 mm (3.4 in)
1975	124.2 mm (4.9 in)
1976	62.7 mm (2.5 in)
1977	47.1 mm (1.9 in)
1978	53.0 mm (2.1 in)
1979	106.9 mm (4.2 in)
1980	80.6 mm (3.2 in)
1981	118.6 mm (4.7 in)
1982	84.8 mm (3.3 in)
1983	77.3 mm (3.0 in)
1984	74.7 mm (2.9 in)
1985	183.7 mm (7.2 in)
1986	111.8 mm (4.4 in)
1987	64.1 mm (2.5 in)
1988	57.4 mm (2.3 in)
1989	75.4 mm (3.0 in)
1990	79.8 mm (3.1 in)
1991	47.7 mm (1.9 in)
1992	67.6 mm (2.7 in)
1993	18.3 mm (0.7 in)
1994	95.5 mm (3.8 in)
1995	62.2 mm (2.4 in)
1996	80.5 mm (3.2 in)
1997	80.0 mm (3.1 in)
1998	81.8 mm (3.2 in)
1999	61.3 mm (2.4 in)
2000	159.5 mm (6.3 in)
2001	75.5 mm (3.0 in)
2002	45.0 mm (1.8 in)
2003	75.3 mm (3.0 in)
2004	85.8 mm (3.4 in)
2005	90.8 mm (3.6 in)
2006	82.6 mm (3.3 in)
2007	66.5 mm (2.6 in)
2008	123.7 mm (4.9 in)
2009	18.8 mm (0.7 in)
2010	63.0 mm (2.5 in)
2011	99.4 mm (3.9 in)
2012	43.9 mm (1.7 in)
2013	117.9 mm (4.6 in)
2014	74.4 mm (2.9 in)
2015	58.7 mm (2.3 in)
2016	74.4 mm (2.9 in)
2017	77.8 mm (3.1 in)
2018	65.0 mm (2.6 in)
2019	90.9 mm (3.6 in)
2020	98.7 mm (3.9 in)
2021	81.8 mm (3.2 in)
2022	78.8 mm (3.1 in)
2023	104.7 mm (4.1 in)
2024	144.9 mm (5.7 in)
2025	71.2 mm (2.8 in)
2026	92.2 mm (3.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Lapeer Wwtp, 1948 to 2026. The record is 48 days in 1969, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Lapeer Wwtp by year
Year	Longest dry spell (CDD)
1948	18 days
1949	15 days
1950	16 days
1951	18 days
1952	21 days
1953	18 days
1954	21 days
1955	17 days
1956	23 days
1957	32 days
1958	30 days
1959	18 days
1960	17 days
1961	28 days
1962	21 days
1963	23 days
1964	17 days
1965	15 days
1966	17 days
1967	25 days
1968	16 days
1969	48 days
1970	17 days
1971	21 days
1972	13 days
1973	27 days
1974	14 days
1975	12 days
1976	14 days
1977	13 days
1978	15 days
1979	16 days
1980	16 days
1981	15 days
1982	16 days
1983	16 days
1984	13 days
1985	12 days
1986	23 days
1987	24 days
1988	27 days
1989	21 days
1990	12 days
1991	14 days
1992	13 days
1993	10 days
1994	14 days
1995	23 days
1996	15 days
1997	17 days
1998	22 days
1999	29 days
2000	18 days
2001	48 days
2002	20 days
2003	13 days
2004	15 days
2005	30 days
2006	17 days
2007	15 days
2008	19 days
2009	11 days
2010	18 days
2011	13 days
2012	11 days
2013	18 days
2014	16 days
2015	17 days
2016	13 days
2017	11 days
2018	16 days
2019	18 days
2020	15 days
2021	24 days
2022	16 days
2023	22 days
2024	16 days
2025	17 days
2026	11 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

63 years with a frost

Across 63 years with a frost, the median last spring frost at Lapeer Wwtp falls on 8 May and the median first autumn frost on 5 October, which leaves a median of 151 days between them.

In 1989 to 2025 the median growing season was 160 days. That is 27 days more than in 1950 to 1985.

Fitted over all years, the growing season changes by +5.8 days per decade at this station.

Frost dates and growing season at Lapeer Wwtp
Measure	Median, all years	Earliest period (1950 to 1985)	Recent period (1989 to 2025)	Recent against earliest	Fitted trend
Last spring frost	8 May	16 May	30 April	16 days earlier	-2.0 days per decade
First autumn frost	5 October	24 September	15 October	21 days later	+3.8 days per decade
Growing days	151 days	133 days	160 days	27 days more	+5.8 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.

Rainfall Return Levels

72 years, 1949 to 2025

A day with at least 47.0 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 104.1 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Lapeer Wwtp: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	47.0 mm (1.9 in)
5 years	60.9 mm (2.4 in)
10 years	70.6 mm (2.8 in)
25 years	83.6 mm (3.3 in)
50 years	93.6 mm (3.7 in)
100 years	104.1 mm (4.1 in)	Longer than the 72 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 72 years of values from 1949 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 94.5 mm (3.7 in) in 1981; 93.2 mm (3.7 in) in 2024; 86.9 mm (3.4 in) in 1986.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2010 to 2025 against 1961 to 1990

Over 2010 to 2025, Lapeer Wwtp had a mean temperature of 9.3 C (48.8 F) and 868.4 mm (34.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Harrow Cda (Canada, 119 km away), Albion (United States, 413 km away) and Norwalk Wwtp (United States, 208 km away).

Climate twins of Lapeer Wwtp: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Harrow Cda	Canada	119 km (74 mi)	8.9 C (48.1 F)	873.2 mm (34.4 in)	0.57
Albion	United States	413 km (257 mi)	9.0 C (48.1 F)	892.3 mm (35.1 in)	0.57
Norwalk Wwtp	United States	208 km (129 mi)	9.5 C (49.0 F)	905.1 mm (35.6 in)	0.58

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Lapeer Wwtp standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lapeer Wwtp 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).