Jonesville 4 N Threshold Days by Year (USC00164734)

15 fixed thresholds counted per year at Jonesville 4 N (USC00164734): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jonesville 4 N Thresholds

Jonesville 4 N: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1961 with 64.
Jonesville 4 N: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1946 with 32.
Jonesville 4 N: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1940 with 13.
Jonesville 4 N: days with 100 mm (3.94 in) or more of precipitation in 20 years, most in 1953 with 3.
15 fixed thresholds have at least one qualifying day at Jonesville 4 N.

Days at or above 30 C (86 F)

14 years with a qualifying day

Days per year at Jonesville 4 N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 169 in 1963.

Days at or above 30 C (86 F) per year at Jonesville 4 N
Year	Days	Decade average
1958	129	139
1959	149	139
1960	142	134.5
1961	115	134.5
1962	152	134.5
1963	169	134.5
1964	132	134.5
1965	144	134.5
1966	120	134.5
1967	122	134.5
1968	120	134.5
1969	129	134.5
1970	138	133
1971	128	133

For each year, a bar from the first to the last day at Jonesville 4 N meeting 30 C (86 F).

First to last qualifying date each year at Jonesville 4 N
Year	First date	Last date
1958	1958-04-24	1958-10-11
1959	1959-04-30	1959-10-13
1960	1960-04-08	1960-10-14
1961	1961-04-26	1961-10-14
1962	1962-04-29	1962-10-21
1963	1963-03-14	1963-10-28
1964	1964-04-08	1964-10-19
1965	1965-04-09	1965-10-17
1966	1966-04-01	1966-10-10
1967	1967-03-15	1967-10-25
1968	1968-05-14	1968-10-31
1969	1969-05-20	1969-10-20
1970	1970-04-18	1970-10-09
1971	1971-04-21	1971-11-03

Every Fixed Threshold

Fixed thresholds at Jonesville 4 N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	14	169	1963	128
35 C (95 F): Days	14	55	1962	14
90 F (32.2 C): Days	14	126	1963	85
100 F (37.8 C): Days	6	10	1969	10
0 C (32 F): Ice days (max	7	6	1963	2
0 C (32 F): Frost days (min	14	68	1963	31
-10 C (14 F): Days with min	3	7	1962	1
20 C (68 F): Tropical nights (min	14	117	1959	104
25 C (77 F): Days with min	2	3	1969	3
10 mm (0.39 in): Days with 10 mm or more rain	40	64	1961	46
25 mm (0.98 in): Days with 25 mm or more rain	40	32	1946	21
50 mm (1.97 in): Days with 50 mm or more rain	39	13	1940	6
100 mm (3.94 in): Days with 100 mm or more rain	20	3	1953	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1938	1
10 cm (3.9 in): Days with 10 cm or more snowfall	3	1	1935	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

Data for Jonesville 4 N 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Jonesville 4 N Threshold Days by Year (USC00164734)

Key Facts for Jonesville 4 N Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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