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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Perce Threshold Days by Year (CA007055920)

13 fixed thresholds counted per year at Perce (CA007055920): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Perce Thresholds

  • Perce: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1943 with 46.
  • Perce: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1944 with 10.
  • Perce: days with 10 cm (3.9 in) or more of snowfall in 21 years, most in 1941 with 14.
  • Perce: days with a maximum temperature at or below 0 C (32 F) in 14 years, most in 1943 with 111.
  • 13 fixed thresholds have at least one qualifying day at Perce.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Perce Days per year at Perce with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 1944. 01231941: 11942: 11944: 31947: 11941194219441947
Days per year at Perce with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 1944.
Days at or above 30 C (86 F) per year at Perce
YearDaysDecade average
194111.5
194211.5
194431.5
194711.5
First to last qualifying date each year at Perce For each year, a bar from the first to the last day at Perce meeting 30 C (86 F). 1941: 24 July 1941 to 24 July 19411942: 31 August 1942 to 31 August 19421944: 28 June 1944 to 3 August 19441947: 15 August 1947 to 15 August 19471941194219441947JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Perce meeting 30 C (86 F).
First to last qualifying date each year at Perce
YearFirst dateLast date
19411941-07-241941-07-24
19421942-08-311942-08-31
19441944-06-281944-08-03
19471947-08-151947-08-15

Every Fixed Threshold

Fixed thresholds at Perce
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4319441
0 C (32 F): Ice days (max141111943106
0 C (32 F): Frost days (min131981939147
-10 C (14 F): Days with min1396194366
-20 C (-4 F): Days with min1320193914
-30 C (-22 F): Days with min2219431
20 C (68 F): Tropical nights (min2119371
10 mm (0.39 in): Days with 10 mm or more rain2146194315
25 mm (0.98 in): Days with 25 mm or more rain211019443
50 mm (1.97 in): Days with 50 mm or more rain12219372
10 cm (3.9 in): Days with 10 cm or more snowfall211419415
25 cm (9.8 in): Days with 25 cm or more snowfall11319401
50 cm (19.7 in): Days with 50 cm or more snowfall10n/a2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

  • Data for Perce 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). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).