Hillsdale Lake Threshold Days by Year (USC00143686)

17 fixed thresholds counted per year at Hillsdale Lake (USC00143686): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hillsdale Lake Thresholds

Hillsdale Lake: days with 10 mm (0.39 in) or more of precipitation in 18 years, most in 1990 with 37.
Hillsdale Lake: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1993 with 18.
Hillsdale Lake: days with 50 mm (1.97 in) or more of precipitation in 15 years, most in 1997 with 6.
Hillsdale Lake: days with a maximum temperature at or above 30 C (86 F) in 14 years, most in 1991 with 88.
17 fixed thresholds have at least one qualifying day at Hillsdale Lake.

Days at or above 30 C (86 F)

14 years with a qualifying day

Days per year at Hillsdale Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 88 in 1991.

Days at or above 30 C (86 F) per year at Hillsdale Lake
Year	Days	Decade average
1987	72	68
1988	87	68
1989	45	68
1990	63	63.7
1991	88	63.7
1992	35	63.7
1993	57	63.7
1994	66	63.7
1995	67	63.7
1996	58	63.7
1997	62	63.7
1998	84	63.7
1999	57	63.7
2000	82	82

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

First to last qualifying date each year at Hillsdale Lake
Year	First date	Last date
1987	1987-04-19	1987-09-05
1988	1988-05-14	1988-09-23
1989	1989-04-23	1989-10-15
1990	1990-06-06	1990-10-07
1991	1991-05-14	1991-10-18
1992	1992-06-16	1992-09-16
1993	1993-06-14	1993-09-23
1994	1994-05-25	1994-10-02
1995	1995-06-08	1995-10-13
1996	1996-04-12	1996-09-23
1997	1997-05-18	1997-10-07
1998	1998-05-14	1998-09-29
1999	1999-06-05	1999-09-08
2000	2000-05-12	2000-10-04

Every Fixed Threshold

Fixed thresholds at Hillsdale Lake
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	14	88	1991	82
35 C (95 F): Days	12	30	2000	30
40 C (104 F): Days	2	7	2000	7
90 F (32.2 C): Days	14	61	1988	57
100 F (37.8 C): Days	7	18	2000	18
0 C (32 F): Ice days (max	14	37	1993	25
0 C (32 F): Frost days (min	14	125	1996	90
-10 C (14 F): Days with min	14	41	1996	11
-20 C (-4 F): Days with min	7	9	1989	3
20 C (68 F): Tropical nights (min	14	63	1991	43
25 C (77 F): Days with min	4	3	1999	3
10 mm (0.39 in): Days with 10 mm or more rain	18	37	1990	7
25 mm (0.98 in): Days with 25 mm or more rain	18	18	1993	3
50 mm (1.97 in): Days with 50 mm or more rain	15	6	1997	2
100 mm (3.94 in): Days with 100 mm or more rain	4	2	1994	1
10 cm (3.9 in): Days with 10 cm or more snowfall	11	4	1993	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	0	n/a	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1987.

Download the Data

Data for Hillsdale Lake 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Hillsdale Lake Threshold Days by Year (USC00143686)

Key Facts for Hillsdale Lake Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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