Island Pond Weather Records (USC00434120)

Record envelope, standing records and threshold days for Island Pond (USC00434120), Vermont, United States, with 37 years of record.

Key Facts for Island Pond

Island Pond (USC00434120) is a weather station in Vermont, United States at 44.81 latitude and -71.89 longitude, 366 m (1,200 ft) above sea level.
The station reports from 1990 to 2026, 37 years of record.
1,464 records set at Island Pond still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Island Pond tied a daily record low minimum temperature of 4.4 C (39.9 F) on 29 August 2026 (provisional).

Provisional Records

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

About the Station

Location: Vermont, United States, 44.81 latitude, -71.89 longitude.
Elevation: 366 m (1,200 ft).
Period of record: 1990 to 2026, 37 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

19 days at or beyond a record

The band shows the record high and record low for each calendar day at Island Pond. The lines show the 2026 daily maximum and minimum. 19 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Island Pond, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.1 C (61.0 F)	-38.3 C (-36.9 F)	5.6 C (42.1 F)	-33.9 C (-29.0 F)
Feb	18.3 C (64.9 F)	-41.7 C (-43.1 F)	5.0 C (41.0 F)	-27.8 C (-18.0 F)
Mar	25.0 C (77.0 F)	-35.0 C (-31.0 F)	19.4 C (66.9 F)	-30.6 C (-23.1 F)
Apr	28.9 C (84.0 F)	-20.6 C (-5.1 F)	22.2 C (72.0 F)	-12.8 C (9.0 F)
May	32.8 C (91.0 F)	-6.1 C (21.0 F)	26.7 C (80.1 F)	-3.3 C (26.1 F)
Jun	32.8 C (91.0 F)	-0.6 C (30.9 F)	31.7 C (89.1 F)	1.7 C (35.1 F)
Jul	33.3 C (91.9 F)	0.0 C (32.0 F)	33.3 C (91.9 F)	6.1 C (43.0 F)
Aug	32.8 C (91.0 F)	1.7 C (35.1 F)	31.1 C (88.0 F)	4.4 C (39.9 F)
Sep	32.8 C (91.0 F)	-5.0 C (23.0 F)	23.9 C (75.0 F)	-0.6 C (30.9 F)
Oct	28.3 C (82.9 F)	-10.6 C (12.9 F)	21.1 C (70.0 F)	-3.3 C (26.1 F)
Nov	23.3 C (73.9 F)	-23.9 C (-11.0 F)	n/a	n/a
Dec	16.1 C (61.0 F)	-32.8 C (-27.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Island Pond still stand. 2002 holds the most, with 68.

Standing records at Island Pond by the year they were set
Year set	Standing records
1990	17
1991	50
1992	67
1993	45
1994	53
1995	37
1996	43
1997	28
1998	31
1999	28
2000	48
2001	47
2002	68
2003	45
2004	39
2005	38
2006	30
2007	40
2008	36
2009	34
2010	48
2011	24
2012	50
2013	31
2014	34
2015	50
2016	29
2017	53
2018	60
2019	27
2020	40
2021	31
2022	35
2023	36
2024	37
2025	37
2026	18

All-Time Record Progression

3 new records

3 all-time records were set at Island Pond between 11 July 2024 and 2 July 2026. Each dot is a new record.

When Island Pond set new all-time records
Date	Kind	Detail
2024-07-11	Record daily precipitation	Record daily precipitation 100.6 mm (4.0 in)
2024-07-30	Record daily precipitation	Record daily precipitation 182.1 mm (7.2 in)
2026-07-02	Record high maximum temperature	Record high maximum temperature 33.3 C (91.9 F)

Wettest Day of Each Month

Jul: 182.1 mm (7.2 in)

The wettest day on record for each calendar month at Island Pond. The most was 182.1 mm (7.2 in) on 30 July 2024.

Record daily precipitation for each month at Island Pond
Month	Record daily precipitation (mm)	Date
Jan	49.3 mm (1.9 in)	9 January 1998
Feb	47.8 mm (1.9 in)	25 February 2016
Mar	65.3 mm (2.6 in)	15 March 1993
Apr	37.3 mm (1.5 in)	29 April 2008
May	55.1 mm (2.2 in)	29 May 2012
Jun	85.1 mm (3.4 in)	12 June 2002
Jul	182.1 mm (7.2 in)	30 July 2024
Aug	100.1 mm (3.9 in)	5 August 1995
Sep	79.8 mm (3.1 in)	5 September 2012
Oct	89.4 mm (3.5 in)	1 October 2010
Nov	56.4 mm (2.2 in)	27 November 1998
Dec	73.9 mm (2.9 in)	18 December 2000

Period of Record Coverage

1990 to 2026

37 years of record at Island Pond, 1990 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1990, 1996, 1997, 1999, 2026.

Days with data per year at Island Pond
Year	Days with data	Share of year	Complete
1990	153	42%	No
1991	361	99%	Yes
1992	361	99%	Yes
1993	345	95%	Yes
1994	351	96%	Yes
1995	337	92%	Yes
1996	315	86%	No
1997	292	80%	No
1998	335	92%	Yes
1999	308	84%	No
2000	363	99%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	364	100%	Yes
2004	354	97%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	360	99%	Yes
2008	364	99%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	361	99%	Yes
2014	359	98%	Yes
2015	363	99%	Yes
2016	363	99%	Yes
2017	364	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	363	99%	Yes
2021	365	100%	Yes
2022	365	100%	Yes
2023	365	100%	Yes
2024	366	100%	Yes
2025	365	100%	Yes
2026	285	78%	No

Latest Records

Latest records at Island Pond
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 August 2026	Island Pond, US	daily low min (Tie, Provisional)	4.4 C (39.9 F)	tie	13 years	1 of 100 (Routine)
15 August 2026	Island Pond, US	daily low min (Tie)	5.0 C (41.0 F)	tie	0 years	0 of 100 (Routine)
8 August 2026	Island Pond, US	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	4 years	5 of 100 (Routine)
7 August 2026	Island Pond, US	daily high max (Tie)	31.1 C (88.0 F)	tie	8 years	1 of 100 (Routine)
6 August 2026	Island Pond, US	daily high max	30.0 C (86.0 F)	0.6 C (1.1 F)	36 years	14 of 100 (Routine)
28 July 2026	Island Pond, US	daily high max	29.4 C (84.9 F)	0.5 C (0.9 F)	19 years	9 of 100 (Routine)
3 July 2026	Island Pond, US	daily high max	31.7 C (89.1 F)	0.6 C (1.1 F)	24 years	11 of 100 (Routine)
2 July 2026	Island Pond, US	all-time high max	33.3 C (91.9 F)	0.5 C (0.9 F)	34 years	34 of 100 (Routine)
19 June 2026	Island Pond, US	daily rain	45.0 mm (1.8 in)	19.1 mm (0.8 in)	28 years	32 of 100 (Routine)
13 June 2026	Island Pond, US	daily high max	31.7 C (89.1 F)	1.1 C (2.0 F)	8 years	7 of 100 (Routine)
11 June 2026	Island Pond, US	daily high min	18.9 C (66.0 F)	1.1 C (2.0 F)	20 years	11 of 100 (Routine)
7 June 2026	Island Pond, US	daily rain	23.6 mm (0.9 in)	1.5 mm (0.06 in)	32 years	13 of 100 (Routine)
5 June 2026	Island Pond, US	daily high max	28.9 C (84.0 F)	0.6 C (1.1 F)	20 years	10 of 100 (Routine)
30 May 2026	Island Pond, US	daily rain	47.2 mm (1.9 in)	28.9 mm (1.1 in)	5 years	39 of 100 (Notable)
25 May 2026	Island Pond, US	daily rain	27.9 mm (1.1 in)	8.1 mm (0.32 in)	12 years	15 of 100 (Routine)
22 May 2026	Island Pond, US	daily low min	-2.8 C (27.0 F)	0.6 C (1.1 F)	24 years	11 of 100 (Routine)
20 May 2026	Island Pond, US	daily high min	15.0 C (59.0 F)	3.3 C (5.9 F)	15 years	13 of 100 (Routine)
7 May 2026	Island Pond, US	daily low max	6.1 C (43.0 F)	1.7 C (3.1 F)	31 years	14 of 100 (Routine)
6 May 2026	Island Pond, US	daily high max (Tie)	25.0 C (77.0 F)	tie	12 years	1 of 100 (Routine)
4 May 2026	Island Pond, US	daily low max (Tie)	6.7 C (44.1 F)	tie	28 years	2 of 100 (Routine)

Climate Trend

31 complete years, 1991 to 2025

One stripe for each of 31 complete years at Island Pond, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 5.1 C (41.2 F); red stripes are warmer. The coolest year was 1992, at 3.2 C (37.7 F), and the warmest was 2012, at 6.8 C (44.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Island Pond as warming stripes, 1991 to 2025
Year	Annual mean temperature	Difference from the station mean
1991	4.6 C	-0.50 C
1992	3.2 C	-1.96 C
1993	3.6 C	-1.52 C
1994	3.5 C	-1.63 C
1998	5.6 C	+0.50 C
2000	4.3 C	-0.87 C
2001	5.3 C	+0.22 C
2002	5.1 C	-0.01 C
2003	4.3 C	-0.83 C
2004	4.3 C	-0.83 C
2005	5.4 C	+0.29 C
2006	6.4 C	+1.31 C
2007	4.4 C	-0.73 C
2008	5.1 C	-0.07 C
2009	4.6 C	-0.49 C
2010	6.3 C	+1.13 C
2011	6.1 C	+0.95 C
2012	6.8 C	+1.64 C
2013	5.4 C	+0.32 C
2014	4.7 C	-0.44 C
2015	4.6 C	-0.51 C
2016	5.9 C	+0.81 C
2017	5.5 C	+0.36 C
2018	5.2 C	+0.04 C
2019	4.3 C	-0.81 C
2020	5.9 C	+0.78 C
2021	5.7 C	+0.54 C
2022	5.3 C	+0.22 C
2023	6.3 C	+1.13 C
2024	6.5 C	+1.42 C
2025	4.7 C	-0.41 C

The annual mean temperature here has risen by 0.5 C (0.2 to 0.8) per decade over 1991 to 2025. In Fahrenheit: 0.9 F (0.4 to 1.4) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Island Pond
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.5 C (0.2 to 0.8) per decade	0.9 F (0.4 to 1.4) per decade	1991 to 2025	31	Rise
Mean daily maximum	0.26 C (0.01 to 0.50) per decade	0.46 F (0.03 to 0.89) per decade	1991 to 2025	31	Rise
Mean daily minimum	0.8 C (0.4 to 1.1) per decade	1.4 F (0.7 to 2.1) per decade	1991 to 2025	31	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

1990 to 2026

Yearly extremes at Island Pond: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.3 C (91.9 F)	2026	31.7 C (89.1 F)	37
Coldest night (TNn)	-41.7 C (-43.1 F)	1993	-33.9 C (-29.0 F)	37
Wettest day (Rx1day)	182.1 mm (7.2 in)	2024	51.6 mm (2.0 in)	37
Wettest five days (Rx5day)	194.5 mm (7.7 in)	2024	86.7 mm (3.4 in)	37
Longest dry spell (CDD)	20 days	2025	12 days	37

Hottest day (TXx)

The hottest day of the year at Island Pond, 1990 to 2026. The record is 33.3 C (91.9 F) in 2026, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Island Pond by year
Year	Hottest day (TXx)
1990	30.0 C (86.0 F)
1991	32.8 C (91.0 F)
1992	30.6 C (87.1 F)
1993	30.6 C (87.1 F)
1994	32.8 C (91.0 F)
1995	32.8 C (91.0 F)
1996	29.4 C (84.9 F)
1997	29.4 C (84.9 F)
1998	31.7 C (89.1 F)
1999	31.7 C (89.1 F)
2000	28.9 C (84.0 F)
2001	32.8 C (91.0 F)
2002	32.8 C (91.0 F)
2003	32.8 C (91.0 F)
2004	28.9 C (84.0 F)
2005	32.2 C (90.0 F)
2006	31.7 C (89.1 F)
2007	31.1 C (88.0 F)
2008	32.2 C (90.0 F)
2009	31.1 C (88.0 F)
2010	32.8 C (91.0 F)
2011	31.7 C (89.1 F)
2012	32.2 C (90.0 F)
2013	31.7 C (89.1 F)
2014	30.6 C (87.1 F)
2015	30.6 C (87.1 F)
2016	30.0 C (86.0 F)
2017	31.7 C (89.1 F)
2018	32.8 C (91.0 F)
2019	31.7 C (89.1 F)
2020	32.8 C (91.0 F)
2021	30.6 C (87.1 F)
2022	30.6 C (87.1 F)
2023	31.7 C (89.1 F)
2024	31.1 C (88.0 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 Island Pond, 1990 to 2026. The record is -41.7 C (-43.1 F) in 1993, marked on the chart; the median year is -33.9 C (-29.0 F).

Coldest night (TNn) at Island Pond by year
Year	Coldest night (TNn)
1990	-20.0 C (-4.0 F)
1991	-31.7 C (-25.1 F)
1992	-32.8 C (-27.0 F)
1993	-41.7 C (-43.1 F)
1994	-38.3 C (-36.9 F)
1995	-35.0 C (-31.0 F)
1996	-35.6 C (-32.1 F)
1997	-37.8 C (-36.0 F)
1998	-33.3 C (-27.9 F)
1999	-37.8 C (-36.0 F)
2000	-34.4 C (-29.9 F)
2001	-30.0 C (-22.0 F)
2002	-28.9 C (-20.0 F)
2003	-40.0 C (-40.0 F)
2004	-37.8 C (-36.0 F)
2005	-33.9 C (-29.0 F)
2006	-26.7 C (-16.1 F)
2007	-35.0 C (-31.0 F)
2008	-35.6 C (-32.1 F)
2009	-37.8 C (-36.0 F)
2010	-28.3 C (-18.9 F)
2011	-32.2 C (-26.0 F)
2012	-27.8 C (-18.0 F)
2013	-32.8 C (-27.0 F)
2014	-34.4 C (-29.9 F)
2015	-37.8 C (-36.0 F)
2016	-31.7 C (-25.1 F)
2017	-31.7 C (-25.1 F)
2018	-36.1 C (-33.0 F)
2019	-31.1 C (-24.0 F)
2020	-33.9 C (-29.0 F)
2021	-31.1 C (-24.0 F)
2022	-33.9 C (-29.0 F)
2023	-31.7 C (-25.1 F)
2024	-26.1 C (-15.0 F)
2025	-32.8 C (-27.0 F)
2026	-33.9 C (-29.0 F)

Wettest day (Rx1day)

The wettest day of the year at Island Pond, 1990 to 2026. The record is 182.1 mm (7.2 in) in 2024, marked on the chart; the median year is 51.6 mm (2.0 in).

Wettest day (Rx1day) at Island Pond by year
Year	Wettest day (Rx1day)
1990	52.1 mm (2.1 in)
1991	43.4 mm (1.7 in)
1992	47.0 mm (1.9 in)
1993	65.3 mm (2.6 in)
1994	34.3 mm (1.4 in)
1995	100.1 mm (3.9 in)
1996	39.4 mm (1.6 in)
1997	56.4 mm (2.2 in)
1998	56.4 mm (2.2 in)
1999	79.2 mm (3.1 in)
2000	73.9 mm (2.9 in)
2001	49.0 mm (1.9 in)
2002	85.1 mm (3.4 in)
2003	49.0 mm (1.9 in)
2004	31.2 mm (1.2 in)
2005	63.0 mm (2.5 in)
2006	57.7 mm (2.3 in)
2007	51.8 mm (2.0 in)
2008	50.3 mm (2.0 in)
2009	51.6 mm (2.0 in)
2010	89.4 mm (3.5 in)
2011	91.2 mm (3.6 in)
2012	79.8 mm (3.1 in)
2013	41.7 mm (1.6 in)
2014	50.0 mm (2.0 in)
2015	55.1 mm (2.2 in)
2016	51.6 mm (2.0 in)
2017	58.7 mm (2.3 in)
2018	49.8 mm (2.0 in)
2019	70.6 mm (2.8 in)
2020	49.8 mm (2.0 in)
2021	42.2 mm (1.7 in)
2022	41.1 mm (1.6 in)
2023	37.3 mm (1.5 in)
2024	182.1 mm (7.2 in)
2025	30.7 mm (1.2 in)
2026	47.2 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Island Pond, 1990 to 2026. The record is 194.5 mm (7.7 in) in 2024, marked on the chart; the median year is 86.7 mm (3.4 in).

Wettest five days (Rx5day) at Island Pond by year
Year	Wettest five days (Rx5day)
1990	85.3 mm (3.4 in)
1991	68.8 mm (2.7 in)
1992	62.7 mm (2.5 in)
1993	123.1 mm (4.8 in)
1994	60.0 mm (2.4 in)
1995	103.9 mm (4.1 in)
1996	65.0 mm (2.6 in)
1997	80.3 mm (3.2 in)
1998	97.4 mm (3.8 in)
1999	87.9 mm (3.5 in)
2000	89.2 mm (3.5 in)
2001	57.9 mm (2.3 in)
2002	110.3 mm (4.3 in)
2003	87.8 mm (3.5 in)
2004	67.0 mm (2.6 in)
2005	132.6 mm (5.2 in)
2006	87.6 mm (3.4 in)
2007	98.3 mm (3.9 in)
2008	97.9 mm (3.9 in)
2009	72.5 mm (2.9 in)
2010	135.4 mm (5.3 in)
2011	141.0 mm (5.6 in)
2012	99.9 mm (3.9 in)
2013	126.7 mm (5.0 in)
2014	65.4 mm (2.6 in)
2015	87.2 mm (3.4 in)
2016	66.8 mm (2.6 in)
2017	97.1 mm (3.8 in)
2018	68.3 mm (2.7 in)
2019	86.7 mm (3.4 in)
2020	71.7 mm (2.8 in)
2021	64.2 mm (2.5 in)
2022	83.3 mm (3.3 in)
2023	75.5 mm (3.0 in)
2024	194.5 mm (7.7 in)
2025	43.7 mm (1.7 in)
2026	82.1 mm (3.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Island Pond, 1990 to 2026. The record is 20 days in 2025, marked on the chart; the median year is 12 days.

Longest dry spell (CDD) at Island Pond by year
Year	Longest dry spell (CDD)
1990	9 days
1991	10 days
1992	12 days
1993	9 days
1994	11 days
1995	17 days
1996	11 days
1997	10 days
1998	11 days
1999	15 days
2000	11 days
2001	17 days
2002	12 days
2003	12 days
2004	15 days
2005	13 days
2006	17 days
2007	13 days
2008	12 days
2009	13 days
2010	16 days
2011	11 days
2012	12 days
2013	13 days
2014	12 days
2015	10 days
2016	8 days
2017	17 days
2018	12 days
2019	11 days
2020	13 days
2021	13 days
2022	10 days
2023	17 days
2024	16 days
2025	20 days
2026	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

31 years with a frost

Across 31 years with a frost, the median last spring frost at Island Pond falls on 25 May and the median first autumn frost on 24 September, which leaves a median of 126 days between them.

Fitted over all years, the growing season changes by +12.2 days per decade at this station.

Frost dates and growing season at Island Pond
Measure	Median, all years	Earliest period	Recent period (1992 to 2025)	Recent against earliest	Fitted trend
Last spring frost	25 May	n/a	26 May	n/a	-4.7 days per decade
First autumn frost	24 September	n/a	25 September	n/a	+7.5 days per decade
Growing days	126 days	n/a	126 days	n/a	+12.2 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

35 years, 1991 to 2025

A day with at least 52.7 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 170.3 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Island Pond: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	52.7 mm (2.1 in)
5 years	72.6 mm (2.9 in)
10 years	89.4 mm (3.5 in)
25 years	116.1 mm (4.6 in)
50 years	140.8 mm (5.5 in)	Longer than the 35 years of record
100 years	170.3 mm (6.7 in)	Longer than the 35 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, 35 years of values from 1991 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: 182.1 mm (7.2 in) in 2024; 100.1 mm (3.9 in) in 1995; 91.2 mm (3.6 in) in 2011.

Download the Data

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