Ilomantsi Potsonvaara Weather Records (FIE00145042)

Record envelope, standing records and threshold days for Ilomantsi Potsonvaara (FIE00145042), Finland, with 45 years of record.

Key Facts for Ilomantsi Potsonvaara

Ilomantsi Potsonvaara (FIE00145042) is a weather station in Finland at 63.14 latitude and 31.05 longitude, 235 m (771 ft) above sea level.
The station reports from 1981 to 2025, 45 years of record.
1,464 records set at Ilomantsi Potsonvaara still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Finland, 63.14 latitude, 31.05 longitude.
Elevation: 235 m (771 ft).
Period of record: 1981 to 2025, 45 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

18 days at or beyond a record

The band shows the record high and record low for each calendar day at Ilomantsi Potsonvaara. The lines show the 2026 daily maximum and minimum. 18 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ilomantsi Potsonvaara, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	3.6 C (38.5 F)	-32.4 C (-26.3 F)	3.6 C (38.5 F)	-22.0 C (-7.6 F)
Feb	4.5 C (40.1 F)	-29.7 C (-21.5 F)	2.7 C (36.9 F)	-19.8 C (-3.6 F)
Mar	12.1 C (53.8 F)	-25.1 C (-13.2 F)	12.1 C (53.8 F)	-14.0 C (6.8 F)
Apr	19.5 C (67.1 F)	-12.3 C (9.9 F)	18.3 C (64.9 F)	-11.7 C (10.9 F)
May	30.8 C (87.4 F)	-6.4 C (20.5 F)	23.0 C (73.4 F)	-4.1 C (24.6 F)
Jun	31.5 C (88.7 F)	-0.5 C (31.1 F)	21.1 C (70.0 F)	6.8 C (44.2 F)
Jul	33.8 C (92.8 F)	3.1 C (37.6 F)	n/a	n/a
Aug	30.8 C (87.4 F)	1.5 C (34.7 F)	n/a	n/a
Sep	25.1 C (77.2 F)	-3.4 C (25.9 F)	n/a	n/a
Oct	17.5 C (63.5 F)	-14.0 C (6.8 F)	n/a	n/a
Nov	9.3 C (48.7 F)	-21.1 C (-6.0 F)	n/a	n/a
Dec	6.7 C (44.1 F)	-27.1 C (-16.8 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ilomantsi Potsonvaara still stand. 2014 holds the most, with 109.

Standing records at Ilomantsi Potsonvaara by the year they were set
Year set	Standing records
2004	30
2005	65
2006	88
2007	71
2008	73
2009	53
2010	104
2011	46
2012	63
2013	63
2014	109
2015	47
2016	79
2017	59
2018	88
2019	72
2020	23
2021	96
2022	63
2023	45
2024	96
2025	31

Wettest Day of Each Month

Jun: 54.6 mm (2.1 in)

The wettest day on record for each calendar month at Ilomantsi Potsonvaara. The most was 54.6 mm (2.1 in) on 17 June 2009.

Record daily precipitation for each month at Ilomantsi Potsonvaara
Month	Record daily precipitation (mm)	Date
Jan	17.6 mm (0.7 in)	12 January 2022
Feb	19.7 mm (0.8 in)	3 February 2019
Mar	15.4 mm (0.6 in)	22 March 2023
Apr	19.2 mm (0.8 in)	7 April 2024
May	35.9 mm (1.4 in)	13 May 2014
Jun	54.6 mm (2.1 in)	17 June 2009
Jul	49.3 mm (1.9 in)	29 July 2022
Aug	34.6 mm (1.4 in)	24 August 2017
Sep	30.3 mm (1.2 in)	13 September 2023
Oct	29.8 mm (1.2 in)	1 October 2019
Nov	20.0 mm (0.8 in)	11 November 2022
Dec	18.2 mm (0.7 in)	4 December 2015

Period of Record Coverage

2004 to 2025

22 years of record at Ilomantsi Potsonvaara, 2004 to 2025. 4 years have data for under 90 percent of days and are left out of rankings: 2004, 2019, 2020, 2025.

Days with data per year at Ilomantsi Potsonvaara
Year	Days with data	Share of year	Complete
2004	190	52%	No
2005	365	100%	Yes
2006	344	94%	Yes
2007	337	92%	Yes
2008	344	94%	Yes
2009	365	100%	Yes
2010	360	99%	Yes
2011	365	100%	Yes
2012	360	98%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	364	99%	Yes
2017	360	99%	Yes
2018	364	100%	Yes
2019	280	77%	No
2020	198	54%	No
2021	361	99%	Yes
2022	365	100%	Yes
2023	365	100%	Yes
2024	366	100%	Yes
2025	156	43%	No

Latest Records

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

Climate Trend

15 complete years, 2005 to 2024

One stripe for each of 15 complete years at Ilomantsi Potsonvaara, 2005 to 2024. Blue stripes are years cooler than the station's own mean of 3.1 C (37.5 F); red stripes are warmer. The coolest year was 2010, at 1.4 C (34.6 F), and the warmest was 2015, at 4.0 C (39.2 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Ilomantsi Potsonvaara as warming stripes, 2005 to 2024
Year	Annual mean temperature	Difference from the station mean
2005	3.2 C	+0.09 C
2009	2.2 C	-0.93 C
2010	1.4 C	-1.66 C
2011	3.5 C	+0.41 C
2012	1.7 C	-1.38 C
2013	3.8 C	+0.73 C
2014	3.8 C	+0.70 C
2015	4.0 C	+0.93 C
2016	3.4 C	+0.33 C
2017	2.7 C	-0.43 C
2018	3.5 C	+0.39 C
2021	2.6 C	-0.48 C
2022	3.5 C	+0.39 C
2023	3.1 C	-0.01 C
2024	3.9 C	+0.86 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

1981 to 2025

Yearly extremes at Ilomantsi Potsonvaara: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.8 C (92.8 F)	2010	28.8 C (83.8 F)	22
Coldest night (TNn)	-32.4 C (-26.3 F)	2006	-25.0 C (-13.0 F)	22
Wettest day (Rx1day)	54.6 mm (2.1 in)	2009	29.7 mm (1.2 in)	18
Wettest five days (Rx5day)	85.9 mm (3.4 in)	2009	58.9 mm (2.3 in)	18
Longest dry spell (CDD)	32 days	2018	17 days	18

Hottest day (TXx)

The hottest day of the year at Ilomantsi Potsonvaara, 1981 to 2025. The record is 33.8 C (92.8 F) in 2010, marked on the chart; the median year is 28.8 C (83.8 F).

Hottest day (TXx) at Ilomantsi Potsonvaara by year
Year	Hottest day (TXx)
1981	n/a
2004	25.3 C (77.5 F)
2005	28.6 C (83.5 F)
2006	29.0 C (84.2 F)
2007	27.3 C (81.1 F)
2008	24.8 C (76.6 F)
2009	26.8 C (80.2 F)
2010	33.8 C (92.8 F)
2011	30.0 C (86.0 F)
2012	30.0 C (86.0 F)
2013	30.1 C (86.2 F)
2014	29.7 C (85.5 F)
2015	25.2 C (77.4 F)
2016	28.3 C (82.9 F)
2017	24.6 C (76.3 F)
2018	30.7 C (87.3 F)
2019	29.0 C (84.2 F)
2020	27.8 C (82.0 F)
2021	31.5 C (88.7 F)
2022	31.4 C (88.5 F)
2023	28.1 C (82.6 F)
2024	29.6 C (85.3 F)
2025	23.0 C (73.4 F)

Coldest night (TNn)

The coldest night of the year at Ilomantsi Potsonvaara, 1981 to 2025. The record is -32.4 C (-26.3 F) in 2006, marked on the chart; the median year is -25.0 C (-13.0 F).

Coldest night (TNn) at Ilomantsi Potsonvaara by year
Year	Coldest night (TNn)
1981	n/a
2004	-17.8 C (0.0 F)
2005	-21.7 C (-7.1 F)
2006	-32.4 C (-26.3 F)
2007	-28.1 C (-18.6 F)
2008	-20.0 C (-4.0 F)
2009	-23.6 C (-10.5 F)
2010	-29.7 C (-21.5 F)
2011	-29.3 C (-20.7 F)
2012	-29.7 C (-21.5 F)
2013	-23.5 C (-10.3 F)
2014	-24.2 C (-11.6 F)
2015	-25.9 C (-14.6 F)
2016	-31.5 C (-24.7 F)
2017	-25.0 C (-13.0 F)
2018	-25.0 C (-13.0 F)
2019	-28.3 C (-18.9 F)
2020	-14.0 C (6.8 F)
2021	-31.3 C (-24.3 F)
2022	-23.2 C (-9.8 F)
2023	-20.2 C (-4.4 F)
2024	-26.4 C (-15.5 F)
2025	-22.0 C (-7.6 F)

Wettest day (Rx1day)

The wettest day of the year at Ilomantsi Potsonvaara, 1981 to 2025. The record is 54.6 mm (2.1 in) in 2009, marked on the chart; the median year is 29.7 mm (1.2 in).

Wettest day (Rx1day) at Ilomantsi Potsonvaara by year
Year	Wettest day (Rx1day)
1981	13.5 mm (0.5 in)
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	54.6 mm (2.1 in)
2010	29.8 mm (1.2 in)
2011	33.6 mm (1.3 in)
2012	26.7 mm (1.1 in)
2013	23.4 mm (0.9 in)
2014	35.9 mm (1.4 in)
2015	29.6 mm (1.2 in)
2016	16.4 mm (0.6 in)
2017	34.6 mm (1.4 in)
2018	20.5 mm (0.8 in)
2019	29.8 mm (1.2 in)
2020	28.1 mm (1.1 in)
2021	29.8 mm (1.2 in)
2022	49.3 mm (1.9 in)
2023	33.6 mm (1.3 in)
2024	24.0 mm (0.9 in)
2025	13.5 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ilomantsi Potsonvaara, 1981 to 2025. The record is 85.9 mm (3.4 in) in 2009, marked on the chart; the median year is 58.9 mm (2.3 in).

Wettest five days (Rx5day) at Ilomantsi Potsonvaara by year
Year	Wettest five days (Rx5day)
1981	19.5 mm (0.8 in)
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	85.9 mm (3.4 in)
2010	61.5 mm (2.4 in)
2011	46.9 mm (1.8 in)
2012	76.4 mm (3.0 in)
2013	65.2 mm (2.6 in)
2014	62.9 mm (2.5 in)
2015	58.4 mm (2.3 in)
2016	36.7 mm (1.4 in)
2017	69.2 mm (2.7 in)
2018	52.6 mm (2.1 in)
2019	48.5 mm (1.9 in)
2020	51.5 mm (2.0 in)
2021	59.3 mm (2.3 in)
2022	61.9 mm (2.4 in)
2023	71.3 mm (2.8 in)
2024	46.4 mm (1.8 in)
2025	26.3 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ilomantsi Potsonvaara, 1981 to 2025. The record is 32 days in 2018, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Ilomantsi Potsonvaara by year
Year	Longest dry spell (CDD)
1981	6 days
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	12 days
2010	17 days
2011	16 days
2012	16 days
2013	31 days
2014	22 days
2015	14 days
2016	23 days
2017	12 days
2018	32 days
2019	20 days
2020	12 days
2021	17 days
2022	18 days
2023	26 days
2024	18 days
2025	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.

Download the Data

Data for Ilomantsi Potsonvaara standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ilomantsi Potsonvaara 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 2026-10-16 (16 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).