Green Hill Weather Records (USC00333362)

Record envelope, standing records and threshold days for Green Hill (USC00333362), Ohio, United States, with 33 years of record.

Key Facts for Green Hill

Green Hill (USC00333362) is a weather station in Ohio, United States at 40.73 latitude and -81.02 longitude, 346 m (1,135 ft) above sea level.
The station reports from 1893 to 1925, 33 years of record.
1,464 records set at Green Hill still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Green Hill set a daily record low maximum temperature of 21.1 C (70.0 F) on 30 June 1925.

About the Station

Location: Ohio, United States, 40.73 latitude, -81.02 longitude.
Elevation: 346 m (1,135 ft).
Period of record: 1893 to 1925, 33 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Green Hill. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Green Hill, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	22.2 C (72.0 F)	-33.9 C (-29.0 F)	n/a	n/a
Feb	20.0 C (68.0 F)	-31.7 C (-25.1 F)	n/a	n/a
Mar	28.3 C (82.9 F)	-23.9 C (-11.0 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-15.6 C (3.9 F)	n/a	n/a
May	36.7 C (98.1 F)	-5.6 C (21.9 F)	n/a	n/a
Jun	40.0 C (104.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	1.7 C (35.1 F)	n/a	n/a
Aug	38.9 C (102.0 F)	1.1 C (34.0 F)	n/a	n/a
Sep	37.2 C (99.0 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-9.4 C (15.1 F)	n/a	n/a
Nov	23.9 C (75.0 F)	-16.7 C (1.9 F)	n/a	n/a
Dec	20.6 C (69.1 F)	-27.8 C (-18.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Green Hill still stand. 1895 holds the most, with 93.

Standing records at Green Hill by the year they were set
Year set	Standing records
1893	58
1894	79
1895	93
1896	72
1897	62
1898	54
1899	56
1900	45
1901	52
1902	32
1903	42
1904	47
1905	35
1906	37
1907	41
1908	33
1909	45
1910	32
1911	43
1912	40
1913	35
1914	55
1915	34
1916	49
1917	54
1918	52
1919	23
1920	28
1921	25
1922	30
1923	30
1924	30
1925	21

Wettest Day of Each Month

Oct: 119.1 mm (4.7 in)

The wettest day on record for each calendar month at Green Hill. The most was 119.1 mm (4.7 in) on 22 October 1919.

Record daily precipitation for each month at Green Hill
Month	Record daily precipitation (mm)	Date
Jan	36.8 mm (1.4 in)	21 January 1904
Feb	51.3 mm (2.0 in)	10 February 1907
Mar	48.3 mm (1.9 in)	3 March 1904
Apr	69.1 mm (2.7 in)	1 April 1904
May	64.5 mm (2.5 in)	12 May 1923
Jun	61.0 mm (2.4 in)	16 June 1920
Jul	50.8 mm (2.0 in)	14 July 1919
Aug	81.0 mm (3.2 in)	28 August 1903
Sep	82.3 mm (3.2 in)	2 September 1912
Oct	119.1 mm (4.7 in)	22 October 1919
Nov	40.4 mm (1.6 in)	5 November 1898
Dec	51.3 mm (2.0 in)	17 December 1903

Period of Record Coverage

1893 to 1925

33 years of record at Green Hill, 1893 to 1925. 1 years have data for under 90 percent of days and are left out of rankings: 1925.

Days with data per year at Green Hill
Year	Days with data	Share of year	Complete
1893	334	92%	Yes
1894	365	100%	Yes
1895	365	100%	Yes
1896	366	100%	Yes
1897	363	99%	Yes
1898	365	100%	Yes
1899	364	100%	Yes
1900	356	98%	Yes
1901	364	100%	Yes
1902	364	100%	Yes
1903	363	99%	Yes
1904	366	100%	Yes
1905	364	100%	Yes
1906	365	100%	Yes
1907	362	99%	Yes
1908	364	99%	Yes
1909	365	100%	Yes
1910	365	100%	Yes
1911	360	99%	Yes
1912	362	99%	Yes
1913	360	99%	Yes
1914	362	99%	Yes
1915	359	98%	Yes
1916	364	99%	Yes
1917	360	99%	Yes
1918	364	100%	Yes
1919	362	99%	Yes
1920	364	99%	Yes
1921	365	100%	Yes
1922	364	100%	Yes
1923	365	100%	Yes
1924	365	100%	Yes
1925	180	49%	No

Latest Records

Latest records at Green Hill
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 June 1925	Green Hill, US	daily low max	21.1 C (70.0 F)	0.6 C (1.1 F)	24 years	11 of 100 (Routine)
25 June 1925	Green Hill, US	daily low max	21.7 C (71.1 F)	0.5 C (0.9 F)	23 years	10 of 100 (Routine)
18 June 1925	Green Hill, US	daily high min	20.0 C (68.0 F)	1.1 C (2.0 F)	4 years	6 of 100 (Routine)
5 June 1925	Green Hill, US	daily high max	34.4 C (93.9 F)	1.6 C (2.9 F)	25 years	13 of 100 (Routine)
25 May 1925	Green Hill, US	daily low max	10.6 C (51.1 F)	1.1 C (2.0 F)	27 years	12 of 100 (Routine)
25 May 1925	Green Hill, US	daily low min	-1.7 C (28.9 F)	1.7 C (3.1 F)	0 years	6 of 100 (Routine)
23 May 1925	Green Hill, US	monthly high min	20.0 C (68.0 F)	1.7 C (3.1 F)	12 years	19 of 100 (Routine)
23 May 1925	Green Hill, US	daily high max	31.1 C (88.0 F)	1.7 C (3.1 F)	4 years	6 of 100 (Routine)
19 May 1925	Green Hill, US	daily low min	-1.7 C (28.9 F)	1.1 C (2.0 F)	10 years	8 of 100 (Routine)
8 May 1925	Green Hill, US	daily low min (Tie)	-2.2 C (28.0 F)	tie	19 years	2 of 100 (Routine)
24 April 1925	Green Hill, US	daily high max	30.6 C (87.1 F)	1.7 C (3.1 F)	10 years	8 of 100 (Routine)
23 April 1925	Green Hill, US	daily high max	30.6 C (87.1 F)	3.9 C (7.0 F)	25 years	15 of 100 (Routine)
23 April 1925	Green Hill, US	daily high min	13.3 C (55.9 F)	1.1 C (2.0 F)	10 years	8 of 100 (Routine)
29 March 1925	Green Hill, US	daily low max (Tie)	0.6 C (33.1 F)	tie	25 years	2 of 100 (Routine)
10 March 1925	Green Hill, US	daily high max (Tie)	19.4 C (66.9 F)	tie	26 years	2 of 100 (Routine)
3 March 1925	Green Hill, US	daily low min	-20.0 C (-4.0 F)	5.0 C (9.0 F)	8 years	13 of 100 (Routine)
28 February 1925	Green Hill, US	daily low min	-18.3 C (-0.9 F)	2.2 C (4.0 F)	24 years	12 of 100 (Routine)
27 February 1925	Green Hill, US	daily low max	-10.0 C (14.0 F)	2.8 C (5.0 F)	5 years	8 of 100 (Routine)
25 February 1925	Green Hill, US	daily high min	3.9 C (39.0 F)	2.8 C (5.0 F)	23 years	12 of 100 (Routine)
23 February 1925	Green Hill, US	monthly high min	8.3 C (46.9 F)	0.5 C (0.9 F)	16 years	17 of 100 (Routine)

Climate Trend

31 complete years, 1894 to 1924

One stripe for each of 31 complete years at Green Hill, 1894 to 1924. Blue stripes are years cooler than the station's own mean of 8.9 C (48.0 F); red stripes are warmer. The coolest year was 1917, at 7.0 C (44.5 F), and the warmest was 1921, at 10.7 C (51.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Green Hill as warming stripes, 1894 to 1924
Year	Annual mean temperature	Difference from the station mean
1894	10.0 C	+1.08 C
1895	8.6 C	-0.34 C
1896	9.6 C	+0.68 C
1897	9.7 C	+0.75 C
1898	9.9 C	+0.98 C
1899	9.4 C	+0.47 C
1900	9.7 C	+0.75 C
1901	8.7 C	-0.25 C
1902	8.7 C	-0.20 C
1903	8.8 C	-0.11 C
1904	7.5 C	-1.37 C
1905	8.3 C	-0.63 C
1906	9.3 C	+0.43 C
1907	7.9 C	-0.99 C
1908	9.4 C	+0.50 C
1909	8.9 C	+0.00 C
1910	8.4 C	-0.51 C
1911	9.7 C	+0.81 C
1912	8.0 C	-0.89 C
1913	9.4 C	+0.53 C
1914	8.6 C	-0.30 C
1915	8.6 C	-0.30 C
1916	8.5 C	-0.46 C
1917	7.0 C	-1.95 C
1918	9.0 C	+0.07 C
1919	9.6 C	+0.65 C
1920	8.3 C	-0.57 C
1921	10.7 C	+1.75 C
1922	9.6 C	+0.65 C
1923	8.8 C	-0.11 C
1924	7.7 C	-1.22 C

The fitted trend in annual mean temperature here over 1894 to 1924 is -0.2 C (-0.5 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.4 F (-1.0 to 0.2) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Green Hill
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.2 C (-0.5 to 0.1) per decade	-0.4 F (-1.0 to 0.2) per decade	1894 to 1924	31	Not clearly different from zero
Mean daily maximum	-0.4 C (-0.8 to -0.1) per decade	-0.8 F (-1.4 to -0.1) per decade	1894 to 1924	31	Fall
Mean daily minimum	0.04 C (-0.31 to 0.39) per decade	0.1 F (-0.6 to 0.7) per decade	1894 to 1924	31	Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1893 to 1925

Yearly extremes at Green Hill: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1895	33.9 C (93.0 F)	33
Coldest night (TNn)	-33.9 C (-29.0 F)	1912	-25.6 C (-14.1 F)	33
Wettest day (Rx1day)	119.1 mm (4.7 in)	1919	46.5 mm (1.8 in)	33
Wettest five days (Rx5day)	145.5 mm (5.7 in)	1919	65.0 mm (2.6 in)	33
Longest dry spell (CDD)	23 days	1924	9 days	33

Hottest day (TXx)

The hottest day of the year at Green Hill, 1893 to 1925. The record is 40.0 C (104.0 F) in 1895, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Green Hill by year
Year	Hottest day (TXx)
1893	36.1 C (97.0 F)
1894	38.9 C (102.0 F)
1895	40.0 C (104.0 F)
1896	34.4 C (93.9 F)
1897	38.9 C (102.0 F)
1898	34.4 C (93.9 F)
1899	35.0 C (95.0 F)
1900	34.4 C (93.9 F)
1901	35.0 C (95.0 F)
1902	32.8 C (91.0 F)
1903	33.9 C (93.0 F)
1904	32.2 C (90.0 F)
1905	32.8 C (91.0 F)
1906	32.2 C (90.0 F)
1907	31.1 C (88.0 F)
1908	33.9 C (93.0 F)
1909	31.7 C (89.1 F)
1910	33.3 C (91.9 F)
1911	37.2 C (99.0 F)
1912	32.2 C (90.0 F)
1913	35.0 C (95.0 F)
1914	36.7 C (98.1 F)
1915	30.6 C (87.1 F)
1916	35.0 C (95.0 F)
1917	33.3 C (91.9 F)
1918	38.9 C (102.0 F)
1919	33.3 C (91.9 F)
1920	30.6 C (87.1 F)
1921	34.4 C (93.9 F)
1922	33.3 C (91.9 F)
1923	33.9 C (93.0 F)
1924	33.9 C (93.0 F)
1925	34.4 C (93.9 F)

Coldest night (TNn)

The coldest night of the year at Green Hill, 1893 to 1925. The record is -33.9 C (-29.0 F) in 1912, marked on the chart; the median year is -25.6 C (-14.1 F).

Coldest night (TNn) at Green Hill by year
Year	Coldest night (TNn)
1893	-25.0 C (-13.0 F)
1894	-27.8 C (-18.0 F)
1895	-25.0 C (-13.0 F)
1896	-21.7 C (-7.1 F)
1897	-27.8 C (-18.0 F)
1898	-24.4 C (-11.9 F)
1899	-31.7 C (-25.1 F)
1900	-28.9 C (-20.0 F)
1901	-26.7 C (-16.1 F)
1902	-24.4 C (-11.9 F)
1903	-25.6 C (-14.1 F)
1904	-30.0 C (-22.0 F)
1905	-27.8 C (-18.0 F)
1906	-26.1 C (-15.0 F)
1907	-30.6 C (-23.1 F)
1908	-21.7 C (-7.1 F)
1909	-26.1 C (-15.0 F)
1910	-27.2 C (-17.0 F)
1911	-17.2 C (1.0 F)
1912	-33.9 C (-29.0 F)
1913	-19.4 C (-2.9 F)
1914	-29.4 C (-20.9 F)
1915	-25.6 C (-14.1 F)
1916	-22.8 C (-9.0 F)
1917	-27.8 C (-18.0 F)
1918	-31.7 C (-25.1 F)
1919	-22.8 C (-9.0 F)
1920	-21.1 C (-6.0 F)
1921	-16.7 C (1.9 F)
1922	-21.1 C (-6.0 F)
1923	-20.6 C (-5.1 F)
1924	-26.1 C (-15.0 F)
1925	-22.8 C (-9.0 F)

Wettest day (Rx1day)

The wettest day of the year at Green Hill, 1893 to 1925. The record is 119.1 mm (4.7 in) in 1919, marked on the chart; the median year is 46.5 mm (1.8 in).

Wettest day (Rx1day) at Green Hill by year
Year	Wettest day (Rx1day)
1893	88.9 mm (3.5 in)
1894	42.2 mm (1.7 in)
1895	36.8 mm (1.4 in)
1896	39.9 mm (1.6 in)
1897	50.8 mm (2.0 in)
1898	63.5 mm (2.5 in)
1899	41.4 mm (1.6 in)
1900	40.1 mm (1.6 in)
1901	58.9 mm (2.3 in)
1902	46.5 mm (1.8 in)
1903	81.0 mm (3.2 in)
1904	69.1 mm (2.7 in)
1905	51.3 mm (2.0 in)
1906	37.3 mm (1.5 in)
1907	51.3 mm (2.0 in)
1908	36.8 mm (1.4 in)
1909	37.3 mm (1.5 in)
1910	50.8 mm (2.0 in)
1911	63.2 mm (2.5 in)
1912	82.3 mm (3.2 in)
1913	46.2 mm (1.8 in)
1914	48.3 mm (1.9 in)
1915	34.3 mm (1.4 in)
1916	43.9 mm (1.7 in)
1917	42.7 mm (1.7 in)
1918	27.4 mm (1.1 in)
1919	119.1 mm (4.7 in)
1920	61.0 mm (2.4 in)
1921	30.2 mm (1.2 in)
1922	63.5 mm (2.5 in)
1923	64.5 mm (2.5 in)
1924	35.1 mm (1.4 in)
1925	21.3 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Green Hill, 1893 to 1925. The record is 145.5 mm (5.7 in) in 1919, marked on the chart; the median year is 65.0 mm (2.6 in).

Wettest five days (Rx5day) at Green Hill by year
Year	Wettest five days (Rx5day)
1893	94.7 mm (3.7 in)
1894	69.6 mm (2.7 in)
1895	83.3 mm (3.3 in)
1896	70.8 mm (2.8 in)
1897	58.6 mm (2.3 in)
1898	104.9 mm (4.1 in)
1899	55.5 mm (2.2 in)
1900	59.9 mm (2.4 in)
1901	91.9 mm (3.6 in)
1902	69.1 mm (2.7 in)
1903	118.6 mm (4.7 in)
1904	88.7 mm (3.5 in)
1905	65.0 mm (2.6 in)
1906	80.3 mm (3.2 in)
1907	43.9 mm (1.7 in)
1908	31.7 mm (1.2 in)
1909	55.9 mm (2.2 in)
1910	28.7 mm (1.1 in)
1911	80.8 mm (3.2 in)
1912	88.4 mm (3.5 in)
1913	142.8 mm (5.6 in)
1914	52.3 mm (2.1 in)
1915	76.7 mm (3.0 in)
1916	56.6 mm (2.2 in)
1917	63.3 mm (2.5 in)
1918	59.0 mm (2.3 in)
1919	145.5 mm (5.7 in)
1920	61.2 mm (2.4 in)
1921	58.2 mm (2.3 in)
1922	55.1 mm (2.2 in)
1923	98.3 mm (3.9 in)
1924	54.9 mm (2.2 in)
1925	31.2 mm (1.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Green Hill, 1893 to 1925. The record is 23 days in 1924, marked on the chart; the median year is 9 days.

Longest dry spell (CDD) at Green Hill by year
Year	Longest dry spell (CDD)
1893	14 days
1894	16 days
1895	20 days
1896	7 days
1897	4 days
1898	8 days
1899	4 days
1900	11 days
1901	6 days
1902	16 days
1903	18 days
1904	9 days
1905	17 days
1906	13 days
1907	8 days
1908	4 days
1909	10 days
1910	18 days
1911	6 days
1912	6 days
1913	3 days
1914	3 days
1915	9 days
1916	9 days
1917	11 days
1918	11 days
1919	14 days
1920	8 days
1921	7 days
1922	5 days
1923	15 days
1924	23 days
1925	22 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

31 years with a frost

Across 31 years with a frost, the median last spring frost at Green Hill falls on 20 May and the median first autumn frost on 28 September, which leaves a median of 132 days between them.

Fitted over all years, the growing season changes by -0.8 days per decade at this station.

Frost dates and growing season at Green Hill
Measure	Median, all years	Earliest period	Recent period (1895 to 1924)	Recent against earliest	Fitted trend
Last spring frost	20 May	n/a	19 May	n/a	+0.4 days per decade
First autumn frost	28 September	n/a	27 September	n/a	-0.4 days per decade
Growing days	132 days	n/a	133 days	n/a	-0.8 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for Green Hill standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Green Hill 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). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).