Tenants Harbor Weather Records (USC00176881)

Record envelope, standing records and threshold days for Tenants Harbor (USC00176881), Maine, United States, with 30 years of record.

Key Facts for Tenants Harbor

Tenants Harbor (USC00176881) is a weather station in Maine, United States at 43.99 latitude and -69.22 longitude, 6 m (21 ft) above sea level.
The station reports from 1989 to 2018, 30 years of record.
1,464 records set at Tenants Harbor still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.

About the Station

Location: Maine, United States, 43.99 latitude, -69.22 longitude.
Elevation: 6 m (21 ft).
Period of record: 1989 to 2018, 30 years.
Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Tenants Harbor. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Tenants Harbor, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.8 C (55.0 F)	-24.4 C (-11.9 F)	n/a	n/a
Feb	15.0 C (59.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Mar	18.3 C (64.9 F)	-18.3 C (-0.9 F)	n/a	n/a
Apr	23.9 C (75.0 F)	-10.0 C (14.0 F)	n/a	n/a
May	31.1 C (88.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jun	31.7 C (89.1 F)	2.8 C (37.0 F)	n/a	n/a
Jul	32.8 C (91.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	31.7 C (89.1 F)	7.2 C (45.0 F)	n/a	n/a
Sep	30.6 C (87.1 F)	1.1 C (34.0 F)	n/a	n/a
Oct	27.2 C (81.0 F)	-2.8 C (27.0 F)	n/a	n/a
Nov	20.6 C (69.1 F)	-12.2 C (10.0 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-23.9 C (-11.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tenants Harbor still stand. 2017 holds the most, with 96.

Standing records at Tenants Harbor by the year they were set
Year set	Standing records
1989	53
1990	54
1991	60
1992	69
1993	53
1994	44
1995	43
1996	59
1997	36
1998	32
1999	44
2000	48
2001	35
2002	49
2003	57
2004	32
2005	45
2006	44
2007	40
2008	30
2009	39
2010	46
2011	40
2012	48
2013	33
2014	47
2015	28
2016	71
2017	96
2018	89

Wettest Day of Each Month

Sep: 150.9 mm (5.9 in)

The wettest day on record for each calendar month at Tenants Harbor. The most was 150.9 mm (5.9 in) on 30 September 2015.

Record daily precipitation for each month at Tenants Harbor
Month	Record daily precipitation (mm)	Date
Jan	101.3 mm (4.0 in)	24 January 1998
Feb	74.4 mm (2.9 in)	24 February 2010
Mar	82.6 mm (3.3 in)	19 March 1991
Apr	85.6 mm (3.4 in)	16 April 2007
May	57.9 mm (2.3 in)	23 May 2005
Jun	80.0 mm (3.1 in)	21 June 2015
Jul	77.5 mm (3.1 in)	22 July 2010
Aug	66.0 mm (2.6 in)	12 August 1990
Sep	150.9 mm (5.9 in)	30 September 2015
Oct	106.7 mm (4.2 in)	8 October 2005
Nov	107.4 mm (4.2 in)	15 November 1995
Dec	62.2 mm (2.4 in)	10 December 2014

Period of Record Coverage

1989 to 2018

30 years of record at Tenants Harbor, 1989 to 2018. 5 years have data for under 90 percent of days and are left out of rankings: 1989, 1990, 2008, 2015, 2018.

Days with data per year at Tenants Harbor
Year	Days with data	Share of year	Complete
1989	210	58%	No
1990	328	90%	No
1991	356	98%	Yes
1992	363	99%	Yes
1993	361	99%	Yes
1994	363	99%	Yes
1995	362	99%	Yes
1996	364	99%	Yes
1997	364	100%	Yes
1998	364	100%	Yes
1999	358	98%	Yes
2000	345	94%	Yes
2001	360	99%	Yes
2002	362	99%	Yes
2003	363	99%	Yes
2004	363	99%	Yes
2005	360	99%	Yes
2006	365	100%	Yes
2007	355	97%	Yes
2008	328	90%	No
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	354	97%	Yes
2013	364	100%	Yes
2014	365	100%	Yes
2015	245	67%	No
2016	340	93%	Yes
2017	351	96%	Yes
2018	268	73%	No

Latest Records

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

Climate Trend

22 complete years, 1991 to 2017

One stripe for each of 22 complete years at Tenants Harbor, 1991 to 2017. Blue stripes are years cooler than the station's own mean of 7.7 C (45.8 F); red stripes are warmer. The coolest year was 2004, at 6.7 C (44.0 F), and the warmest was 2010, at 8.7 C (47.6 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Tenants Harbor as warming stripes, 1991 to 2017
Year	Annual mean temperature	Difference from the station mean
1991	8.2 C	+0.55 C
1992	6.8 C	-0.85 C
1993	7.0 C	-0.62 C
1994	7.6 C	-0.11 C
1995	7.6 C	-0.06 C
1996	7.2 C	-0.45 C
1997	7.4 C	-0.28 C
1998	8.4 C	+0.74 C
1999	8.7 C	+1.02 C
2001	7.9 C	+0.22 C
2002	8.0 C	+0.29 C
2003	6.9 C	-0.76 C
2004	6.7 C	-1.00 C
2005	7.3 C	-0.35 C
2006	8.5 C	+0.83 C
2007	7.2 C	-0.43 C
2009	7.1 C	-0.56 C
2010	8.7 C	+1.03 C
2011	8.2 C	+0.56 C
2013	7.4 C	-0.24 C
2014	7.6 C	-0.07 C
2017	8.1 C	+0.46 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

1989 to 2018

Yearly extremes at Tenants Harbor: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.8 C (91.0 F)	2018	28.9 C (84.0 F)	30
Coldest night (TNn)	-24.4 C (-11.9 F)	2004	-19.4 C (-2.9 F)	30
Wettest day (Rx1day)	150.9 mm (5.9 in)	2015	64.3 mm (2.5 in)	30
Wettest five days (Rx5day)	199.9 mm (7.9 in)	2005	100.9 mm (4.0 in)	30
Longest dry spell (CDD)	31 days	1996	16 days	30

Hottest day (TXx)

The hottest day of the year at Tenants Harbor, 1989 to 2018. The record is 32.8 C (91.0 F) in 2018, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Tenants Harbor by year
Year	Hottest day (TXx)
1989	28.9 C (84.0 F)
1990	28.3 C (82.9 F)
1991	28.9 C (84.0 F)
1992	27.2 C (81.0 F)
1993	27.8 C (82.0 F)
1994	28.9 C (84.0 F)
1995	29.4 C (84.9 F)
1996	26.1 C (79.0 F)
1997	30.6 C (87.1 F)
1998	28.9 C (84.0 F)
1999	31.7 C (89.1 F)
2000	27.2 C (81.0 F)
2001	28.3 C (82.9 F)
2002	31.1 C (88.0 F)
2003	28.9 C (84.0 F)
2004	26.1 C (79.0 F)
2005	30.0 C (86.0 F)
2006	31.1 C (88.0 F)
2007	31.1 C (88.0 F)
2008	25.6 C (78.1 F)
2009	27.2 C (81.0 F)
2010	30.6 C (87.1 F)
2011	29.4 C (84.9 F)
2012	28.3 C (82.9 F)
2013	28.3 C (82.9 F)
2014	27.2 C (81.0 F)
2015	31.7 C (89.1 F)
2016	30.6 C (87.1 F)
2017	31.7 C (89.1 F)
2018	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Tenants Harbor, 1989 to 2018. The record is -24.4 C (-11.9 F) in 2004, marked on the chart; the median year is -19.4 C (-2.9 F).

Coldest night (TNn) at Tenants Harbor by year
Year	Coldest night (TNn)
1989	-17.8 C (0.0 F)
1990	-17.8 C (0.0 F)
1991	-17.8 C (0.0 F)
1992	-18.3 C (-0.9 F)
1993	-23.3 C (-9.9 F)
1994	-23.3 C (-9.9 F)
1995	-21.7 C (-7.1 F)
1996	-19.4 C (-2.9 F)
1997	-21.7 C (-7.1 F)
1998	-16.7 C (1.9 F)
1999	-22.8 C (-9.0 F)
2000	-17.8 C (0.0 F)
2001	-15.0 C (5.0 F)
2002	-15.0 C (5.0 F)
2003	-22.2 C (-8.0 F)
2004	-24.4 C (-11.9 F)
2005	-22.2 C (-8.0 F)
2006	-16.7 C (1.9 F)
2007	-18.9 C (-2.0 F)
2008	-17.2 C (1.0 F)
2009	-19.4 C (-2.9 F)
2010	-16.7 C (1.9 F)
2011	-21.7 C (-7.1 F)
2012	-17.2 C (1.0 F)
2013	-18.9 C (-2.0 F)
2014	-23.3 C (-9.9 F)
2015	-21.7 C (-7.1 F)
2016	-20.6 C (-5.1 F)
2017	-23.9 C (-11.0 F)
2018	-23.3 C (-9.9 F)

Wettest day (Rx1day)

The wettest day of the year at Tenants Harbor, 1989 to 2018. The record is 150.9 mm (5.9 in) in 2015, marked on the chart; the median year is 64.3 mm (2.5 in).

Wettest day (Rx1day) at Tenants Harbor by year
Year	Wettest day (Rx1day)
1989	50.5 mm (2.0 in)
1990	66.0 mm (2.6 in)
1991	82.6 mm (3.3 in)
1992	68.1 mm (2.7 in)
1993	45.7 mm (1.8 in)
1994	106.2 mm (4.2 in)
1995	107.4 mm (4.2 in)
1996	50.8 mm (2.0 in)
1997	48.0 mm (1.9 in)
1998	101.3 mm (4.0 in)
1999	43.2 mm (1.7 in)
2000	65.0 mm (2.6 in)
2001	44.5 mm (1.8 in)
2002	52.1 mm (2.1 in)
2003	46.0 mm (1.8 in)
2004	53.3 mm (2.1 in)
2005	106.7 mm (4.2 in)
2006	61.2 mm (2.4 in)
2007	85.6 mm (3.4 in)
2008	145.5 mm (5.7 in)
2009	54.4 mm (2.1 in)
2010	77.5 mm (3.1 in)
2011	34.0 mm (1.3 in)
2012	74.7 mm (2.9 in)
2013	56.6 mm (2.2 in)
2014	73.7 mm (2.9 in)
2015	150.9 mm (5.9 in)
2016	63.5 mm (2.5 in)
2017	47.8 mm (1.9 in)
2018	105.9 mm (4.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tenants Harbor, 1989 to 2018. The record is 199.9 mm (7.9 in) in 2005, marked on the chart; the median year is 100.9 mm (4.0 in).

Wettest five days (Rx5day) at Tenants Harbor by year
Year	Wettest five days (Rx5day)
1989	68.0 mm (2.7 in)
1990	86.3 mm (3.4 in)
1991	119.6 mm (4.7 in)
1992	83.6 mm (3.3 in)
1993	75.9 mm (3.0 in)
1994	140.2 mm (5.5 in)
1995	120.1 mm (4.7 in)
1996	113.8 mm (4.5 in)
1997	80.3 mm (3.2 in)
1998	152.5 mm (6.0 in)
1999	62.0 mm (2.4 in)
2000	127.2 mm (5.0 in)
2001	83.9 mm (3.3 in)
2002	77.8 mm (3.1 in)
2003	69.1 mm (2.7 in)
2004	53.6 mm (2.1 in)
2005	199.9 mm (7.9 in)
2006	96.0 mm (3.8 in)
2007	141.9 mm (5.6 in)
2008	155.4 mm (6.1 in)
2009	89.5 mm (3.5 in)
2010	129.3 mm (5.1 in)
2011	63.0 mm (2.5 in)
2012	105.8 mm (4.2 in)
2013	92.4 mm (3.6 in)
2014	110.7 mm (4.4 in)
2015	150.9 mm (5.9 in)
2016	111.1 mm (4.4 in)
2017	74.8 mm (2.9 in)
2018	105.9 mm (4.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tenants Harbor, 1989 to 2018. The record is 31 days in 1996, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Tenants Harbor by year
Year	Longest dry spell (CDD)
1989	14 days
1990	14 days
1991	20 days
1992	15 days
1993	12 days
1994	21 days
1995	25 days
1996	31 days
1997	18 days
1998	20 days
1999	13 days
2000	12 days
2001	21 days
2002	16 days
2003	17 days
2004	16 days
2005	15 days
2006	20 days
2007	15 days
2008	18 days
2009	12 days
2010	19 days
2011	13 days
2012	19 days
2013	14 days
2014	13 days
2015	16 days
2016	15 days
2017	14 days
2018	9 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Tenants Harbor falls on 22 April and the median first autumn frost on 31 October, which leaves a median of 190 days between them.

Frost dates and growing season at Tenants Harbor
Measure	Median, all years	Earliest period	Recent period (1991 to 2017)	Recent against earliest	Fitted trend
Last spring frost	22 April	n/a	22 April	n/a	n/a
First autumn frost	31 October	n/a	31 October	n/a	n/a
Growing days	190 days	n/a	190 days	n/a	n/a

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 Tenants Harbor standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tenants Harbor 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 2026-10-17 (17 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).