Built 2026-10-19 (19 October 2026)

Red Lake A Threshold Days by Year (CA006016975)

15 fixed thresholds counted per year at Red Lake A (CA006016975): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Red Lake A Thresholds

  • Red Lake A: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1949 with 24.
  • Red Lake A: days with a maximum temperature at or below 0 C (32 F) in 25 years, most in 1972 with 145.
  • Red Lake A: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1970 with 8.
  • Red Lake A: nights with a minimum temperature at or below 0 C (32 F) in 24 years, most in 1979 with 223.
  • 15 fixed thresholds have at least one qualifying day at Red Lake A.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Red Lake A Days per year at Red Lake A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 16 in 1940. 051015201939: 51940: 161941: 141942: 21943: 71944: 31949: 41965: 21966: 41967: 51969: 31970: 111971: 21972: 31973: 11974: 61975: 81976: 141977: 21978: 11979: 21981: 21983: 1419391942194919671971197419771981
Days per year at Red Lake A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 16 in 1940.
Days at or above 30 C (86 F) per year at Red Lake A
YearDaysDecade average
193955
1940167.7
1941147.7
194227.7
194377.7
194437.7
194947.7
196523.5
196643.5
196753.5
196933.5
1970115
197125
197235
197315
197465
197585
1976145
197725
197815
197925
198128
1983148
First to last qualifying date each year at Red Lake A For each year, a bar from the first to the last day at Red Lake A meeting 30 C (86 F). 1939: 29 May 1939 to 7 August 19391940: 4 July 1940 to 5 September 19401941: 18 May 1941 to 5 August 19411942: 11 July 1942 to 17 July 19421943: 4 July 1943 to 11 July 19431944: 29 May 1944 to 8 August 19441949: 10 June 1949 to 17 August 19491965: 12 August 1965 to 13 August 19651966: 10 July 1966 to 17 July 19661967: 20 July 1967 to 5 September 19671969: 12 July 1969 to 22 August 19691970: 5 June 1970 to 13 August 19701971: 7 August 1971 to 8 August 19711972: 18 May 1972 to 30 August 19721973: 27 August 1973 to 27 August 19731974: 28 June 1974 to 20 July 19741975: 4 July 1975 to 31 July 19751976: 31 May 1976 to 7 September 19761977: 13 May 1977 to 26 May 19771978: 29 June 1978 to 29 June 19781979: 9 July 1979 to 20 July 19791981: 6 July 1981 to 7 July 19811983: 11 June 1983 to 2 September 198319391942194919671971197419771981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Red Lake A meeting 30 C (86 F).
First to last qualifying date each year at Red Lake A
YearFirst dateLast date
19391939-05-291939-08-07
19401940-07-041940-09-05
19411941-05-181941-08-05
19421942-07-111942-07-17
19431943-07-041943-07-11
19441944-05-291944-08-08
19491949-06-101949-08-17
19651965-08-121965-08-13
19661966-07-101966-07-17
19671967-07-201967-09-05
19691969-07-121969-08-22
19701970-06-051970-08-13
19711971-08-071971-08-08
19721972-05-181972-08-30
19731973-08-271973-08-27
19741974-06-281974-07-20
19751975-07-041975-07-31
19761976-05-311976-09-07
19771977-05-131977-05-26
19781978-06-291978-06-29
19791979-07-091979-07-20
19811981-07-061981-07-07
19831983-06-111983-09-02

Every Fixed Threshold

Fixed thresholds at Red Lake A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2316194014
35 C (95 F): Days4319411
90 F (32.2 C): Days17719403
0 C (32 F): Ice days (max251451972128
0 C (32 F): Frost days (min242231979208
-10 C (14 F): Days with min241391978107
-20 C (-4 F): Days with min2499197858
-30 C (-22 F): Days with min2439198215
-40 C (-40 F): Days with min11519661
20 C (68 F): Tropical nights (min15319431
10 mm (0.39 in): Days with 10 mm or more rain2624194918
25 mm (0.98 in): Days with 25 mm or more rain25819701
50 mm (1.97 in): Days with 50 mm or more rain3319741
10 cm (3.9 in): Days with 10 cm or more snowfall231019652
25 cm (9.8 in): Days with 25 cm or more snowfall7119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

  • Data for Red Lake A 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).