Birch River Threshold Days by Year (CA005040218)

16 fixed thresholds counted per year at Birch River (CA005040218): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Birch River Thresholds

Birch River: days with 10 mm (0.39 in) or more of precipitation in 13 years, most in 1973 with 22.
Birch River: days with 10 cm (3.9 in) or more of snowfall in 13 years, most in 1979 with 13.
Birch River: days with a maximum temperature at or above 30 C (86 F) in 11 years, most in 1980 with 17.
Birch River: days with a maximum temperature at or above 90 F (32.2 C) in 11 years, most in 1980 with 6.
16 fixed thresholds have at least one qualifying day at Birch River.

Days at or above 30 C (86 F)

11 years with a qualifying day

Days per year at Birch River with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 1980.

For each year, a bar from the first to the last day at Birch River meeting 30 C (86 F).

First to last qualifying date each year at Birch River
Year	First date	Last date
1971	1971-06-04	1971-09-11
1972	1972-06-01	1972-08-29
1973	1973-06-23	1973-08-18
1974	1974-06-24	1974-08-06
1975	1975-06-25	1975-07-29
1976	1976-07-08	1976-09-06
1977	1977-04-26	1977-06-25
1978	1978-05-15	1978-09-03
1979	1979-07-06	1979-09-16
1980	1980-04-18	1980-07-29
1983	1983-06-10	1983-09-01

Every Fixed Threshold

Fixed thresholds at Birch River
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	11	17	1980	13
35 C (95 F): Days	5	1	1972	1
90 F (32.2 C): Days	11	6	1980	2
100 F (37.8 C): Days	1	1	1980	1
0 C (32 F): Ice days (max	11	144	1972	121
0 C (32 F): Frost days (min	11	223	1972	197
-10 C (14 F): Days with min	11	132	1972	105
-20 C (-4 F): Days with min	11	97	1978	59
-30 C (-22 F): Days with min	11	52	1972	28
-40 C (-40 F): Days with min	9	7	1973	1
20 C (68 F): Tropical nights (min	3	1	1975	1
10 mm (0.39 in): Days with 10 mm or more rain	13	22	1973	16
25 mm (0.98 in): Days with 25 mm or more rain	11	5	1977	2
50 mm (1.97 in): Days with 50 mm or more rain	3	2	1980	2
10 cm (3.9 in): Days with 10 cm or more snowfall	13	13	1979	7
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1971.

Download the Data

Data for Birch River 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Birch River Threshold Days by Year (CA005040218)

Key Facts for Birch River Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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