Ishinomaki Weather Records (JA000047592)

Record envelope, standing records and threshold days for Ishinomaki (JA000047592), Japan, with 76 years of record.

Key Facts for Ishinomaki

Ishinomaki (JA000047592) is a weather station in Japan at 38.43 latitude and 141.30 longitude, 43 m (141 ft) above sea level.
The station reports from 1951 to 2026, 76 years of record.
1,464 records set at Ishinomaki still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ishinomaki set a daily record precipitation of 78.5 mm (3.1 in) on 4 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Japan, 38.43 latitude, 141.30 longitude.
Elevation: 43 m (141 ft).
Period of record: 1951 to 2026, 76 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

3 days at or beyond a record

The band shows the record high and record low for each calendar day at Ishinomaki. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ishinomaki, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-11.1 C (12.0 F)	11.2 C (52.2 F)	-5.7 C (21.7 F)
Feb	19.2 C (66.6 F)	-11.2 C (11.8 F)	14.2 C (57.6 F)	-6.0 C (21.2 F)
Mar	20.7 C (69.3 F)	-8.2 C (17.2 F)	14.6 C (58.3 F)	-2.0 C (28.4 F)
Apr	28.4 C (83.1 F)	-3.0 C (26.6 F)	21.4 C (70.5 F)	3.0 C (37.4 F)
May	30.7 C (87.3 F)	-0.1 C (31.8 F)	27.8 C (82.0 F)	7.8 C (46.0 F)
Jun	34.7 C (94.5 F)	6.9 C (44.4 F)	28.1 C (82.6 F)	11.8 C (53.2 F)
Jul	35.8 C (96.4 F)	8.3 C (46.9 F)	31.4 C (88.5 F)	17.9 C (64.2 F)
Aug	36.8 C (98.2 F)	13.0 C (55.4 F)	30.9 C (87.6 F)	18.2 C (64.8 F)
Sep	34.0 C (93.2 F)	6.9 C (44.4 F)	27.9 C (82.2 F)	14.3 C (57.7 F)
Oct	28.5 C (83.3 F)	0.8 C (33.4 F)	26.9 C (80.4 F)	11.1 C (52.0 F)
Nov	23.7 C (74.7 F)	-4.0 C (24.8 F)	n/a	n/a
Dec	21.9 C (71.4 F)	-8.7 C (16.3 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ishinomaki still stand. 2025 holds the most, with 67.

Standing records at Ishinomaki by the year they were set
Year set	Standing records
1951	23
1952	17
1953	23
1954	27
1955	26
1956	19
1957	11
1958	18
1959	14
1960	22
1961	32
1962	17
1963	14
1964	14
1965	21
1966	29
1967	20
1968	15
1969	42
1970	34
1971	24
1972	14
1973	21
1974	16
1975	8
1976	29
1977	30
1978	20
1979	25
1980	31
1981	40
1982	12
1983	27
1984	33
1985	24
1986	19
1987	33
1988	23
1989	17
1990	19
1991	11
1992	8
1993	25
1994	15
1995	5
1996	5
1997	10
1998	16
1999	10
2000	10
2001	6
2002	15
2003	21
2004	12
2005	9
2006	5
2007	8
2008	7
2009	11
2010	21
2011	8
2012	16
2013	10
2014	5
2015	6
2016	16
2017	13
2018	23
2019	15
2020	20
2021	20
2022	19
2023	39
2024	32
2025	67
2026	22

All-Time Record Progression

9 new records

9 all-time records were set at Ishinomaki between 5 August 1986 and 4 July 2026. Each dot is a new record.

When Ishinomaki set new all-time records
Date	Kind	Detail
1986-08-05	Record daily precipitation	Record daily precipitation 138.0 mm (5.4 in)
1991-10-12	Record daily precipitation	Record daily precipitation 144.0 mm (5.7 in)
2007-08-15	Record high maximum temperature	Record high maximum temperature 36.8 C (98.2 F)
2011-09-21	Record daily precipitation	Record daily precipitation 188.0 mm (7.4 in)
2023-08-07	Record high minimum temperature	Record high minimum temperature 25.9 C (78.6 F)
2023-08-08	Record high minimum temperature	Record high minimum temperature 26.2 C (79.2 F)
2023-08-17	Record high minimum temperature	Record high minimum temperature 26.6 C (79.9 F)
2026-07-01	Record daily precipitation	Record daily precipitation 212.0 mm (8.3 in)
2026-07-04	Record daily precipitation	Record daily precipitation 223.5 mm (8.8 in)

Wettest Day of Each Month

Jul: 223.5 mm (8.8 in)

The wettest day on record for each calendar month at Ishinomaki. The most was 223.5 mm (8.8 in) on 4 July 2026.

Record daily precipitation for each month at Ishinomaki
Month	Record daily precipitation (mm)	Date
Jan	70.5 mm (2.8 in)	16 January 1972
Feb	58.9 mm (2.3 in)	15 February 2021
Mar	60.7 mm (2.4 in)	24 March 1963
Apr	98.5 mm (3.9 in)	15 April 1982
May	74.3 mm (2.9 in)	8 May 1953
Jun	107.8 mm (4.2 in)	28 June 1966
Jul	223.5 mm (8.8 in)	4 July 2026
Aug	138.0 mm (5.4 in)	5 August 1986
Sep	188.0 mm (7.4 in)	21 September 2011
Oct	166.9 mm (6.6 in)	13 October 2019
Nov	114.0 mm (4.5 in)	20 November 1970
Dec	99.5 mm (3.9 in)	24 December 1980

Period of Record Coverage

1951 to 2026

76 years of record at Ishinomaki, 1951 to 2026. 12 years have data for under 90 percent of days and are left out of rankings: 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2020 and others.

Days with data per year at Ishinomaki
Year	Days with data	Share of year	Complete
1951	365	100%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	361	99%	Yes
1955	359	98%	Yes
1956	359	98%	Yes
1957	363	99%	Yes
1958	364	100%	Yes
1959	364	100%	Yes
1960	364	99%	Yes
1961	362	99%	Yes
1962	363	99%	Yes
1963	361	99%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	336	92%	Yes
1991	337	92%	Yes
1992	341	93%	Yes
1993	340	93%	Yes
1994	334	92%	Yes
1995	317	87%	No
1996	333	91%	Yes
1997	307	84%	No
1998	325	89%	No
1999	308	84%	No
2000	329	90%	No
2001	288	79%	No
2002	318	87%	No
2003	335	92%	Yes
2004	330	90%	Yes
2005	335	92%	Yes
2006	333	91%	Yes
2007	340	93%	Yes
2008	347	95%	Yes
2009	336	92%	Yes
2010	332	91%	Yes
2011	335	92%	Yes
2012	346	95%	Yes
2013	342	94%	Yes
2014	341	93%	Yes
2015	343	94%	Yes
2016	333	91%	Yes
2017	337	92%	Yes
2018	332	91%	Yes
2019	335	92%	Yes
2020	317	87%	No
2021	327	90%	No
2022	335	92%	Yes
2023	259	71%	No
2024	290	79%	No
2025	356	98%	Yes
2026	274	75%	No

Latest Records

Latest records at Ishinomaki
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 October 2026	Ishinomaki, JP	daily rain (Provisional)	78.5 mm (3.1 in)	52.7 mm (2.1 in)	64 years	53 of 100 (Notable)
28 September 2026	Ishinomaki, JP	daily rain (Provisional)	136.5 mm (5.4 in)	80.4 mm (3.2 in)	16 years	51 of 100 (Notable)
27 September 2026	Ishinomaki, JP	daily rain (Provisional)	153.0 mm (6.0 in)	109.5 mm (4.3 in)	44 years	60 of 100 (Major)
14 September 2026	Ishinomaki, JP	daily rain (Provisional)	153.5 mm (6.0 in)	110.6 mm (4.4 in)	35 years	57 of 100 (Notable)
4 September 2026	Ishinomaki, JP	daily rain (Provisional)	119.5 mm (4.7 in)	84.4 mm (3.3 in)	32 years	56 of 100 (Notable)
3 September 2026	Ishinomaki, JP	daily rain (Provisional)	128.5 mm (5.1 in)	88.5 mm (3.5 in)	41 years	59 of 100 (Notable)
25 August 2026	Ishinomaki, JP	daily high min (Provisional)	25.6 C (78.1 F)	0.9 C (1.6 F)	0 years	10 of 100 (Routine)
3 August 2026	Ishinomaki, JP	daily rain	27.0 mm (1.1 in)	8.5 mm (0.33 in)	44 years	25 of 100 (Routine)
22 July 2026	Ishinomaki, JP	monthly high min	26.2 C (79.2 F)	0.1 C (0.2 F)	0 years	17 of 100 (Routine)
19 July 2026	Ishinomaki, JP	daily high min	23.6 C (74.5 F)	0.3 C (0.5 F)	71 years	29 of 100 (Routine)
15 July 2026	Ishinomaki, JP	daily high min	23.4 C (74.1 F)	0.1 C (0.2 F)	24 years	14 of 100 (Routine)
14 July 2026	Ishinomaki, JP	daily high min	23.4 C (74.1 F)	0.7 C (1.3 F)	20 years	15 of 100 (Routine)
6 July 2026	Ishinomaki, JP	daily rain	58.5 mm (2.3 in)	18.5 mm (0.7 in)	57 years	37 of 100 (Notable)
5 July 2026	Ishinomaki, JP	daily rain	75.0 mm (3.0 in)	38.7 mm (1.5 in)	71 years	55 of 100 (Notable)
4 July 2026	Ishinomaki, JP	all-time rain	223.5 mm (8.8 in)	11.5 mm (0.5 in)	0 years	35 of 100 (Notable)
1 July 2026	Ishinomaki, JP	all-time rain	212.0 mm (8.3 in)	24.0 mm (0.9 in)	14 years	48 of 100 (Notable)
2 June 2026	Ishinomaki, JP	daily high min	17.1 C (62.8 F)	0.2 C (0.4 F)	49 years	21 of 100 (Routine)
1 June 2026	Ishinomaki, JP	daily high min	17.1 C (62.8 F)	0.3 C (0.5 F)	59 years	25 of 100 (Routine)
30 May 2026	Ishinomaki, JP	monthly high min	18.8 C (65.8 F)	0.9 C (1.6 F)	67 years	40 of 100 (Notable)
30 May 2026	Ishinomaki, JP	daily high max	27.8 C (82.0 F)	0.6 C (1.1 F)	21 years	14 of 100 (Routine)

Climate Trend

40 complete years, 1951 to 2025

One stripe for each of 40 complete years at Ishinomaki, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 11.5 C (52.7 F); red stripes are warmer. The coolest year was 1984, at 10.3 C (50.6 F), and the warmest was 2025, at 13.7 C (56.6 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Ishinomaki as warming stripes, 1951 to 2025
Year	Annual mean temperature	Difference from the station mean
1951	11.6 C	+0.08 C
1952	11.1 C	-0.38 C
1953	11.0 C	-0.54 C
1954	11.4 C	-0.10 C
1955	12.2 C	+0.67 C
1956	11.1 C	-0.38 C
1957	11.6 C	+0.07 C
1958	11.8 C	+0.25 C
1959	12.4 C	+0.89 C
1960	11.9 C	+0.41 C
1961	12.1 C	+0.62 C
1962	11.9 C	+0.35 C
1963	11.5 C	+0.00 C
1964	11.4 C	-0.13 C
1965	11.0 C	-0.49 C
1966	11.4 C	-0.12 C
1967	11.8 C	+0.25 C
1968	11.7 C	+0.20 C
1969	11.2 C	-0.31 C
1970	11.2 C	-0.28 C
1971	11.3 C	-0.24 C
1972	12.2 C	+0.72 C
1973	12.0 C	+0.53 C
1974	10.8 C	-0.76 C
1975	11.6 C	+0.12 C
1976	10.8 C	-0.74 C
1977	11.3 C	-0.25 C
1978	11.6 C	+0.10 C
1979	12.6 C	+1.08 C
1980	10.9 C	-0.58 C
1981	10.6 C	-0.92 C
1982	11.6 C	+0.05 C
1983	11.1 C	-0.42 C
1984	10.3 C	-1.18 C
1985	11.5 C	-0.06 C
1986	10.8 C	-0.74 C
1987	11.5 C	+0.02 C
1988	11.0 C	-0.48 C
1989	12.0 C	+0.50 C
2025	13.7 C	+2.16 C

The fitted trend in annual mean temperature here over 1951 to 2025 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ishinomaki
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (-0.1 to 0.2) per decade	0.1 F (-0.1 to 0.4) per decade	1951 to 2025	40	Not clearly different from zero
Mean daily maximum	0.05 C (-0.10 to 0.19) per decade	0.1 F (-0.2 to 0.3) per decade	1951 to 2025	40	Not clearly different from zero
Mean daily minimum	0.11 C (-0.03 to 0.25) per decade	0.2 F (-0.1 to 0.5) per decade	1951 to 2025	40	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

1951 to 2026

Yearly extremes at Ishinomaki: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.8 C (98.2 F)	2007	33.0 C (91.4 F)	76
Coldest night (TNn)	-11.2 C (11.8 F)	1978	-7.7 C (18.1 F)	76
Wettest day (Rx1day)	223.5 mm (8.8 in)	2026	74.6 mm (2.9 in)	76
Wettest five days (Rx5day)	517.5 mm (20.4 in)	2026	112.0 mm (4.4 in)	61
Longest dry spell (CDD)	37 days	1986	19 days	73

Hottest day (TXx)

The hottest day of the year at Ishinomaki, 1951 to 2026. The record is 36.8 C (98.2 F) in 2007, marked on the chart; the median year is 33.0 C (91.4 F).

Hottest day (TXx) at Ishinomaki by year
Year	Hottest day (TXx)
1951	33.5 C (92.3 F)
1952	32.5 C (90.5 F)
1953	31.0 C (87.8 F)
1954	31.9 C (89.4 F)
1955	34.6 C (94.3 F)
1956	33.4 C (92.1 F)
1957	31.6 C (88.9 F)
1958	32.2 C (90.0 F)
1959	33.4 C (92.1 F)
1960	33.2 C (91.8 F)
1961	34.9 C (94.8 F)
1962	34.0 C (93.2 F)
1963	30.2 C (86.4 F)
1964	32.7 C (90.9 F)
1965	31.0 C (87.8 F)
1966	31.6 C (88.9 F)
1967	33.1 C (91.6 F)
1968	31.6 C (88.9 F)
1969	31.6 C (88.9 F)
1970	33.8 C (92.8 F)
1971	32.8 C (91.0 F)
1972	33.0 C (91.4 F)
1973	34.9 C (94.8 F)
1974	30.2 C (86.4 F)
1975	34.0 C (93.2 F)
1976	31.1 C (88.0 F)
1977	31.9 C (89.4 F)
1978	34.5 C (94.1 F)
1979	34.0 C (93.2 F)
1980	29.8 C (85.6 F)
1981	33.3 C (91.9 F)
1982	31.2 C (88.2 F)
1983	33.9 C (93.0 F)
1984	34.7 C (94.5 F)
1985	34.4 C (93.9 F)
1986	31.6 C (88.9 F)
1987	33.8 C (92.8 F)
1988	30.8 C (87.4 F)
1989	31.0 C (87.8 F)
1990	32.7 C (90.9 F)
1991	31.4 C (88.5 F)
1992	31.5 C (88.7 F)
1993	30.8 C (87.4 F)
1994	33.6 C (92.5 F)
1995	34.4 C (93.9 F)
1996	30.5 C (86.9 F)
1997	34.3 C (93.7 F)
1998	30.8 C (87.4 F)
1999	32.9 C (91.2 F)
2000	34.0 C (93.2 F)
2001	33.0 C (91.4 F)
2002	33.0 C (91.4 F)
2003	32.8 C (91.0 F)
2004	32.0 C (89.6 F)
2005	32.6 C (90.7 F)
2006	32.7 C (90.9 F)
2007	36.8 C (98.2 F)
2008	33.5 C (92.3 F)
2009	30.6 C (87.1 F)
2010	34.2 C (93.6 F)
2011	35.6 C (96.1 F)
2012	32.1 C (89.8 F)
2013	34.7 C (94.5 F)
2014	33.4 C (92.1 F)
2015	34.7 C (94.5 F)
2016	33.7 C (92.7 F)
2017	31.8 C (89.2 F)
2018	36.1 C (97.0 F)
2019	34.1 C (93.4 F)
2020	35.1 C (95.2 F)
2021	32.8 C (91.0 F)
2022	35.8 C (96.4 F)
2023	36.0 C (96.8 F)
2024	34.5 C (94.1 F)
2025	35.1 C (95.2 F)
2026	31.4 C (88.5 F)

Coldest night (TNn)

The coldest night of the year at Ishinomaki, 1951 to 2026. The record is -11.2 C (11.8 F) in 1978, marked on the chart; the median year is -7.7 C (18.1 F).

Coldest night (TNn) at Ishinomaki by year
Year	Coldest night (TNn)
1951	-9.6 C (14.7 F)
1952	-8.5 C (16.7 F)
1953	-7.7 C (18.1 F)
1954	-9.2 C (15.4 F)
1955	-9.1 C (15.6 F)
1956	-8.6 C (16.5 F)
1957	-7.2 C (19.0 F)
1958	-7.2 C (19.0 F)
1959	-6.6 C (20.1 F)
1960	-10.6 C (12.9 F)
1961	-9.7 C (14.5 F)
1962	-6.1 C (21.0 F)
1963	-6.3 C (20.7 F)
1964	-6.6 C (20.1 F)
1965	-7.0 C (19.4 F)
1966	-8.6 C (16.5 F)
1967	-10.2 C (13.6 F)
1968	-8.4 C (16.9 F)
1969	-9.0 C (15.8 F)
1970	-8.2 C (17.2 F)
1971	-7.3 C (18.9 F)
1972	-8.1 C (17.4 F)
1973	-6.2 C (20.8 F)
1974	-8.6 C (16.5 F)
1975	-7.6 C (18.3 F)
1976	-8.6 C (16.5 F)
1977	-11.0 C (12.2 F)
1978	-11.2 C (11.8 F)
1979	-7.4 C (18.7 F)
1980	-10.1 C (13.8 F)
1981	-8.8 C (16.2 F)
1982	-7.8 C (18.0 F)
1983	-8.4 C (16.9 F)
1984	-9.8 C (14.4 F)
1985	-10.3 C (13.5 F)
1986	-9.9 C (14.2 F)
1987	-7.6 C (18.3 F)
1988	-9.0 C (15.8 F)
1989	-6.3 C (20.7 F)
1990	-9.0 C (15.8 F)
1991	-7.4 C (18.7 F)
1992	-5.7 C (21.7 F)
1993	-7.4 C (18.7 F)
1994	-8.6 C (16.5 F)
1995	-8.8 C (16.2 F)
1996	-8.1 C (17.4 F)
1997	-6.7 C (19.9 F)
1998	-8.3 C (17.1 F)
1999	-7.5 C (18.5 F)
2000	-7.7 C (18.1 F)
2001	-9.5 C (14.9 F)
2002	-6.5 C (20.3 F)
2003	-7.7 C (18.1 F)
2004	-5.1 C (22.8 F)
2005	-5.4 C (22.3 F)
2006	-9.1 C (15.6 F)
2007	-4.5 C (23.9 F)
2008	-6.4 C (20.5 F)
2009	-4.8 C (23.4 F)
2010	-8.4 C (16.9 F)
2011	-7.2 C (19.0 F)
2012	-8.3 C (17.1 F)
2013	-8.1 C (17.4 F)
2014	-6.8 C (19.8 F)
2015	-5.1 C (22.8 F)
2016	-4.7 C (23.5 F)
2017	-7.7 C (18.1 F)
2018	-7.8 C (18.0 F)
2019	-6.5 C (20.3 F)
2020	-5.0 C (23.0 F)
2021	-11.1 C (12.0 F)
2022	-6.1 C (21.0 F)
2023	-8.2 C (17.2 F)
2024	-6.0 C (21.2 F)
2025	-5.2 C (22.6 F)
2026	-6.0 C (21.2 F)

Wettest day (Rx1day)

The wettest day of the year at Ishinomaki, 1951 to 2026. The record is 223.5 mm (8.8 in) in 2026, marked on the chart; the median year is 74.6 mm (2.9 in).

Wettest day (Rx1day) at Ishinomaki by year
Year	Wettest day (Rx1day)
1951	41.0 mm (1.6 in)
1952	51.6 mm (2.0 in)
1953	74.3 mm (2.9 in)
1954	60.9 mm (2.4 in)
1955	78.3 mm (3.1 in)
1956	59.9 mm (2.4 in)
1957	57.3 mm (2.3 in)
1958	94.2 mm (3.7 in)
1959	84.2 mm (3.3 in)
1960	80.1 mm (3.2 in)
1961	114.4 mm (4.5 in)
1962	71.8 mm (2.8 in)
1963	64.2 mm (2.5 in)
1964	77.4 mm (3.0 in)
1965	100.5 mm (4.0 in)
1966	107.8 mm (4.2 in)
1967	50.1 mm (2.0 in)
1968	58.5 mm (2.3 in)
1969	66.0 mm (2.6 in)
1970	114.0 mm (4.5 in)
1971	90.0 mm (3.5 in)
1972	95.0 mm (3.7 in)
1973	34.5 mm (1.4 in)
1974	77.5 mm (3.1 in)
1975	53.0 mm (2.1 in)
1976	90.5 mm (3.6 in)
1977	88.5 mm (3.5 in)
1978	46.0 mm (1.8 in)
1979	81.5 mm (3.2 in)
1980	99.5 mm (3.9 in)
1981	104.0 mm (4.1 in)
1982	98.5 mm (3.9 in)
1983	46.0 mm (1.8 in)
1984	52.5 mm (2.1 in)
1985	41.0 mm (1.6 in)
1986	138.0 mm (5.4 in)
1987	41.0 mm (1.6 in)
1988	61.5 mm (2.4 in)
1989	48.5 mm (1.9 in)
1990	62.0 mm (2.4 in)
1991	144.0 mm (5.7 in)
1992	39.9 mm (1.6 in)
1993	56.9 mm (2.2 in)
1994	89.9 mm (3.5 in)
1995	69.1 mm (2.7 in)
1996	84.1 mm (3.3 in)
1997	77.0 mm (3.0 in)
1998	120.9 mm (4.8 in)
1999	99.1 mm (3.9 in)
2000	87.9 mm (3.5 in)
2001	41.4 mm (1.6 in)
2002	66.8 mm (2.6 in)
2003	80.0 mm (3.1 in)
2004	71.1 mm (2.8 in)
2005	56.9 mm (2.2 in)
2006	128.0 mm (5.0 in)
2007	74.9 mm (2.9 in)
2008	78.0 mm (3.1 in)
2009	68.8 mm (2.7 in)
2010	74.9 mm (2.9 in)
2011	188.0 mm (7.4 in)
2012	67.8 mm (2.7 in)
2013	96.0 mm (3.8 in)
2014	159.0 mm (6.3 in)
2015	62.0 mm (2.4 in)
2016	63.0 mm (2.5 in)
2017	71.9 mm (2.8 in)
2018	45.0 mm (1.8 in)
2019	166.9 mm (6.6 in)
2020	69.1 mm (2.7 in)
2021	58.9 mm (2.3 in)
2022	131.1 mm (5.2 in)
2023	156.0 mm (6.1 in)
2024	73.9 mm (2.9 in)
2025	17.0 mm (0.7 in)
2026	223.5 mm (8.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ishinomaki, 1951 to 2026. The record is 517.5 mm (20.4 in) in 2026, marked on the chart; the median year is 112.0 mm (4.4 in).

Wettest five days (Rx5day) at Ishinomaki by year
Year	Wettest five days (Rx5day)
1951	60.6 mm (2.4 in)
1952	108.3 mm (4.3 in)
1953	79.0 mm (3.1 in)
1954	90.3 mm (3.6 in)
1955	97.9 mm (3.9 in)
1956	96.6 mm (3.8 in)
1957	62.6 mm (2.5 in)
1958	163.0 mm (6.4 in)
1959	112.0 mm (4.4 in)
1960	105.8 mm (4.2 in)
1961	141.7 mm (5.6 in)
1962	85.3 mm (3.4 in)
1963	125.2 mm (4.9 in)
1964	134.1 mm (5.3 in)
1965	136.8 mm (5.4 in)
1966	139.7 mm (5.5 in)
1967	99.9 mm (3.9 in)
1968	90.5 mm (3.6 in)
1969	96.0 mm (3.8 in)
1970	119.0 mm (4.7 in)
1971	105.5 mm (4.2 in)
1972	171.5 mm (6.8 in)
1973	80.5 mm (3.2 in)
1974	114.5 mm (4.5 in)
1975	79.0 mm (3.1 in)
1976	117.0 mm (4.6 in)
1977	140.0 mm (5.5 in)
1978	97.0 mm (3.8 in)
1979	91.0 mm (3.6 in)
1980	146.5 mm (5.8 in)
1981	167.0 mm (6.6 in)
1982	163.5 mm (6.4 in)
1983	103.5 mm (4.1 in)
1984	92.0 mm (3.6 in)
1985	98.5 mm (3.9 in)
1986	181.0 mm (7.1 in)
1987	72.0 mm (2.8 in)
1988	122.0 mm (4.8 in)
1989	122.5 mm (4.8 in)
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	156.8 mm (6.2 in)
2000	n/a
2001	n/a
2002	n/a
2003	48.5 mm (1.9 in)
2004	118.4 mm (4.7 in)
2005	n/a
2006	n/a
2007	n/a
2008	144.4 mm (5.7 in)
2009	85.0 mm (3.3 in)
2010	111.1 mm (4.4 in)
2011	308.1 mm (12.1 in)
2012	139.5 mm (5.5 in)
2013	143.0 mm (5.6 in)
2014	166.1 mm (6.5 in)
2015	80.8 mm (3.2 in)
2016	87.1 mm (3.4 in)
2017	148.6 mm (5.9 in)
2018	112.3 mm (4.4 in)
2019	249.5 mm (9.8 in)
2020	94.9 mm (3.7 in)
2021	102.9 mm (4.1 in)
2022	203.0 mm (8.0 in)
2023	165.1 mm (6.5 in)
2024	87.2 mm (3.4 in)
2025	20.5 mm (0.8 in)
2026	517.5 mm (20.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ishinomaki, 1951 to 2026. The record is 37 days in 1986, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Ishinomaki by year
Year	Longest dry spell (CDD)
1951	19 days
1952	13 days
1953	14 days
1954	18 days
1955	16 days
1956	22 days
1957	23 days
1958	19 days
1959	15 days
1960	16 days
1961	16 days
1962	21 days
1963	19 days
1964	17 days
1965	21 days
1966	22 days
1967	26 days
1968	27 days
1969	24 days
1970	29 days
1971	31 days
1972	22 days
1973	16 days
1974	19 days
1975	32 days
1976	20 days
1977	25 days
1978	20 days
1979	20 days
1980	32 days
1981	24 days
1982	23 days
1983	34 days
1984	30 days
1985	29 days
1986	37 days
1987	18 days
1988	22 days
1989	24 days
1990	n/a
1991	1 day
1992	1 day
1993	1 day
1994	1 day
1995	1 day
1996	2 days
1997	1 day
1998	2 days
1999	8 days
2000	n/a
2001	n/a
2002	1 day
2003	2 days
2004	2 days
2005	4 days
2006	3 days
2007	2 days
2008	20 days
2009	19 days
2010	22 days
2011	23 days
2012	19 days
2013	23 days
2014	25 days
2015	17 days
2016	17 days
2017	13 days
2018	25 days
2019	21 days
2020	12 days
2021	14 days
2022	24 days
2023	15 days
2024	16 days
2025	14 days
2026	26 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

40 years with a frost

Across 40 years with a frost, the median last spring frost at Ishinomaki falls on 6 April and the median first autumn frost on 19 November, which leaves a median of 224 days between them.

Fitted over all years, the growing season changes by +1.9 days per decade at this station.

Frost dates and growing season at Ishinomaki
Measure	Median, all years	Earliest period	Recent period (1961 to 2025)	Recent against earliest	Fitted trend
Last spring frost	6 April	n/a	6 April	n/a	-0.8 days per decade
First autumn frost	19 November	n/a	20 November	n/a	+1.0 days per decade
Growing days	224 days	n/a	226 days	n/a	+1.9 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.

Rainfall Return Levels

51 years, 1951 to 2022

A day with at least 72.9 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 200.0 mm (7.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Ishinomaki: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	72.9 mm (2.9 in)
5 years	101.9 mm (4.0 in)
10 years	122.9 mm (4.8 in)
25 years	151.9 mm (6.0 in)
50 years	175.2 mm (6.9 in)
100 years	200.0 mm (7.9 in)	Longer than the 51 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 51 years of values from 1951 to 2022.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 188.0 mm (7.4 in) in 2011; 166.9 mm (6.6 in) in 2019; 159.0 mm (6.3 in) in 2014.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Ishinomaki standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ishinomaki 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).