Ra-Iz Weather Records (RSM00023331)

Record envelope, standing records and threshold days for Ra-Iz (RSM00023331), Russia, with 59 years of record.

Key Facts for Ra-Iz

Ra-Iz (RSM00023331) is a weather station in Russia at 66.90 latitude and 65.67 longitude, 895 m (2,936 ft) above sea level.
The station reports from 1939 to 1997, 59 years of record.
1,464 records set at Ra-Iz still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ra-Iz set a daily record low maximum temperature of -26.8 C (-16.2 F) on 27 December 1997.

About the Station

Location: Russia, 66.90 latitude, 65.67 longitude.
Elevation: 895 m (2,936 ft).
Period of record: 1939 to 1997, 59 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 Ra-Iz. 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 Ra-Iz, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	-1.2 C (29.8 F)	-44.1 C (-47.4 F)	n/a	n/a
Feb	2.0 C (35.6 F)	-41.8 C (-43.2 F)	n/a	n/a
Mar	5.9 C (42.6 F)	-38.5 C (-37.3 F)	n/a	n/a
Apr	10.7 C (51.3 F)	-35.9 C (-32.6 F)	n/a	n/a
May	20.6 C (69.1 F)	-28.3 C (-18.9 F)	n/a	n/a
Jun	24.7 C (76.5 F)	-14.8 C (5.4 F)	n/a	n/a
Jul	26.5 C (79.7 F)	-5.5 C (22.1 F)	n/a	n/a
Aug	22.7 C (72.9 F)	-5.5 C (22.1 F)	n/a	n/a
Sep	20.0 C (68.0 F)	-11.7 C (10.9 F)	n/a	n/a
Oct	11.4 C (52.5 F)	-26.9 C (-16.4 F)	n/a	n/a
Nov	5.7 C (42.3 F)	-34.9 C (-30.8 F)	n/a	n/a
Dec	2.8 C (37.0 F)	-40.6 C (-41.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ra-Iz still stand. 1964 holds the most, with 53.

Standing records at Ra-Iz by the year they were set
Year set	Standing records
1939	11
1940	34
1941	9
1942	12
1943	17
1944	30
1945	15
1946	19
1947	32
1948	32
1949	27
1950	16
1951	25
1952	36
1953	48
1954	22
1955	20
1956	13
1957	22
1958	26
1959	14
1960	19
1961	4
1962	39
1963	23
1964	53
1965	6
1966	38
1967	39
1968	51
1969	42
1970	29
1971	21
1972	17
1973	16
1974	27
1975	10
1976	12
1978	16
1979	28
1980	28
1981	42
1982	29
1983	9
1984	50
1985	12
1986	33
1987	36
1988	12
1989	35
1990	30
1991	33
1992	53
1993	16
1994	9
1995	29
1996	12
1997	26

All-Time Record Progression

12 new records

12 all-time records were set at Ra-Iz between 29 December 1978 and 16 July 1990. Each dot is a new record.

When Ra-Iz set new all-time records
Date	Kind	Detail
1978-12-29	Record low maximum temperature	Record low maximum temperature -37.3 C (-35.1 F)
1979-02-07	Record low minimum temperature	Record low minimum temperature -41.8 C (-43.2 F)
1987-01-06	Record low minimum temperature	Record low minimum temperature -43.4 C (-46.1 F)
1987-01-07	Record low minimum temperature	Record low minimum temperature -44.1 C (-47.4 F)
1989-07-03	Record high minimum temperature	Record high minimum temperature 19.6 C (67.3 F)
1989-07-20	Record high maximum temperature	Record high maximum temperature 25.5 C (77.9 F)
1989-07-20	Record high minimum temperature	Record high minimum temperature 20.7 C (69.3 F)
1990-07-10	Record high maximum temperature	Record high maximum temperature 25.8 C (78.4 F)
1990-07-10	Record high minimum temperature	Record high minimum temperature 20.8 C (69.4 F)
1990-07-11	Record high maximum temperature	Record high maximum temperature 26.0 C (78.8 F)
1990-07-16	Record high maximum temperature	Record high maximum temperature 26.5 C (79.7 F)
1990-07-16	Record high minimum temperature	Record high minimum temperature 21.3 C (70.3 F)

Wettest Day of Each Month

Aug: 81.2 mm (3.2 in)

The wettest day on record for each calendar month at Ra-Iz. The most was 81.2 mm (3.2 in) on 4 August 1950.

Record daily precipitation for each month at Ra-Iz
Month	Record daily precipitation (mm)	Date
Jan	27.9 mm (1.1 in)	15 January 1962
Feb	26.7 mm (1.1 in)	11 February 1962
Mar	27.8 mm (1.1 in)	25 March 1954
Apr	43.9 mm (1.7 in)	4 April 1972
May	44.7 mm (1.8 in)	31 May 1953
Jun	66.9 mm (2.6 in)	30 June 1948
Jul	69.8 mm (2.7 in)	11 July 1992
Aug	81.2 mm (3.2 in)	4 August 1950
Sep	80.4 mm (3.2 in)	1 September 1953
Oct	35.1 mm (1.4 in)	21 October 1973
Nov	29.5 mm (1.2 in)	2 November 1973
Dec	25.7 mm (1.0 in)	16 December 1990

Period of Record Coverage

1939 to 1997

58 years of record at Ra-Iz, 1939 to 1997. 4 years have data for under 90 percent of days and are left out of rankings: 1993, 1994, 1995, 1996.

Days with data per year at Ra-Iz
Year	Days with data	Share of year	Complete
1939	365	100%	Yes
1940	359	98%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	347	95%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	361	99%	Yes
1967	363	99%	Yes
1968	365	100%	Yes
1969	364	100%	Yes
1970	365	100%	Yes
1971	363	99%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	364	100%	Yes
1975	330	90%	Yes
1976	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	334	92%	Yes
1982	365	100%	Yes
1983	335	92%	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	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	283	78%	No
1994	298	82%	No
1995	247	68%	No
1996	134	37%	No
1997	334	92%	Yes

Latest Records

Latest records at Ra-Iz
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 December 1997	Ra-Iz, RU	daily low max	-26.8 C (-16.2 F)	1.0 C (1.8 F)	47 years	20 of 100 (Routine)
22 December 1997	Ra-Iz, RU	daily low min	-30.7 C (-23.3 F)	0.6 C (1.1 F)	10 years	8 of 100 (Routine)
21 December 1997	Ra-Iz, RU	daily low max (Tie)	-26.3 C (-15.3 F)	tie	43 years	4 of 100 (Routine)
20 December 1997	Ra-Iz, RU	daily low max	-29.2 C (-20.6 F)	4.1 C (7.4 F)	43 years	23 of 100 (Routine)
20 December 1997	Ra-Iz, RU	daily low min	-33.0 C (-27.4 F)	1.1 C (2.0 F)	43 years	18 of 100 (Routine)
19 December 1997	Ra-Iz, RU	daily low min	-33.2 C (-27.8 F)	2.0 C (3.6 F)	55 years	24 of 100 (Routine)
19 December 1997	Ra-Iz, RU	daily low max	-27.1 C (-16.8 F)	1.2 C (2.2 F)	3 years	6 of 100 (Routine)
10 December 1997	Ra-Iz, RU	daily high min	-8.4 C (16.9 F)	0.8 C (1.4 F)	32 years	15 of 100 (Routine)
15 November 1997	Ra-Iz, RU	daily rain	11.6 mm (0.5 in)	3.1 mm (0.12 in)	11 years	17 of 100 (Routine)
8 October 1997	Ra-Iz, RU	daily high min	-1.3 C (29.7 F)	0.1 C (0.2 F)	16 years	9 of 100 (Routine)
17 September 1997	Ra-Iz, RU	daily high min	6.5 C (43.7 F)	0.3 C (0.5 F)	22 years	11 of 100 (Routine)
23 August 1997	Ra-Iz, RU	daily low max (Tie)	0.9 C (33.6 F)	tie	50 years	5 of 100 (Routine)
22 August 1997	Ra-Iz, RU	daily low min (Tie)	-3.3 C (26.1 F)	tie	18 years	2 of 100 (Routine)
27 July 1997	Ra-Iz, RU	daily low min	-2.9 C (26.8 F)	1.9 C (3.4 F)	48 years	22 of 100 (Routine)
27 July 1997	Ra-Iz, RU	daily low max	1.5 C (34.7 F)	1.0 C (1.8 F)	31 years	15 of 100 (Routine)
26 July 1997	Ra-Iz, RU	daily low max	0.3 C (32.5 F)	1.0 C (1.8 F)	31 years	15 of 100 (Routine)
24 July 1997	Ra-Iz, RU	daily low max	2.3 C (36.1 F)	1.0 C (1.8 F)	31 years	15 of 100 (Routine)
24 July 1997	Ra-Iz, RU	daily low min	-1.9 C (28.6 F)	0.5 C (0.9 F)	28 years	14 of 100 (Routine)
23 July 1997	Ra-Iz, RU	daily low max	-0.3 C (31.5 F)	2.1 C (3.8 F)	48 years	23 of 100 (Routine)
23 July 1997	Ra-Iz, RU	daily low min	-3.6 C (25.5 F)	1.7 C (3.1 F)	48 years	22 of 100 (Routine)

Climate Trend

49 complete years, 1939 to 1992

One stripe for each of 49 complete years at Ra-Iz, 1939 to 1992. Blue stripes are years cooler than the station's own mean of -7.6 C (18.3 F); red stripes are warmer. The coolest year was 1968, at -9.7 C (14.5 F), and the warmest was 1943, at -5.4 C (22.3 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Ra-Iz as warming stripes, 1939 to 1992
Year	Annual mean temperature	Difference from the station mean
1939	-7.8 C	-0.22 C
1940	-7.8 C	-0.24 C
1941	-8.8 C	-1.20 C
1942	-7.9 C	-0.28 C
1943	-5.4 C	+2.22 C
1944	-5.5 C	+2.08 C
1945	-7.1 C	+0.51 C
1946	-8.0 C	-0.44 C
1947	-7.7 C	-0.11 C
1948	-7.1 C	+0.46 C
1949	-8.0 C	-0.38 C
1950	-6.7 C	+0.87 C
1951	-7.0 C	+0.60 C
1952	-8.0 C	-0.35 C
1953	-6.5 C	+1.06 C
1954	-6.2 C	+1.45 C
1955	-7.7 C	-0.11 C
1956	-7.4 C	+0.18 C
1957	-8.1 C	-0.48 C
1958	-9.3 C	-1.68 C
1960	-9.0 C	-1.38 C
1961	-6.9 C	+0.72 C
1962	-5.9 C	+1.69 C
1963	-8.2 C	-0.56 C
1964	-8.8 C	-1.19 C
1965	-7.8 C	-0.24 C
1966	-9.0 C	-1.41 C
1967	-5.5 C	+2.15 C
1968	-9.7 C	-2.09 C
1969	-8.4 C	-0.84 C
1970	-8.2 C	-0.62 C
1971	-8.6 C	-0.98 C
1972	-8.7 C	-1.10 C
1973	-7.4 C	+0.25 C
1974	-7.3 C	+0.31 C
1976	-6.6 C	+1.00 C
1978	-9.2 C	-1.56 C
1979	-8.7 C	-1.11 C
1980	-7.8 C	-0.15 C
1982	-7.4 C	+0.22 C
1984	-6.9 C	+0.70 C
1985	-8.1 C	-0.45 C
1986	-8.0 C	-0.43 C
1987	-7.8 C	-0.15 C
1988	-6.9 C	+0.68 C
1989	-6.1 C	+1.53 C
1990	-7.3 C	+0.26 C
1991	-6.1 C	+1.48 C
1992	-8.5 C	-0.86 C

The fitted trend in annual mean temperature here over 1939 to 1992 is -0.04 C (-0.23 to 0.15) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.3) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ra-Iz
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.04 C (-0.23 to 0.15) per decade	-0.1 F (-0.4 to 0.3) per decade	1939 to 1992	49	Not clearly different from zero
Mean daily maximum	-0.1 C (-0.3 to 0.1) per decade	-0.2 F (-0.5 to 0.2) per decade	1939 to 1992	49	Not clearly different from zero
Mean daily minimum	0.00 C (-0.19 to 0.20) per decade	0.01 F (-0.34 to 0.35) per decade	1939 to 1992	49	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

1939 to 1997

Yearly extremes at Ra-Iz: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	26.5 C (79.7 F)	1990	21.0 C (69.7 F)	58
Coldest night (TNn)	-44.1 C (-47.4 F)	1987	-35.6 C (-32.1 F)	58
Wettest day (Rx1day)	81.2 mm (3.2 in)	1950	40.3 mm (1.6 in)	58
Wettest five days (Rx5day)	164.1 mm (6.5 in)	1993	78.2 mm (3.1 in)	58
Longest dry spell (CDD)	79 days	1942	20 days	58

Hottest day (TXx)

The hottest day of the year at Ra-Iz, 1939 to 1997. The record is 26.5 C (79.7 F) in 1990, marked on the chart; the median year is 21.0 C (69.7 F).

Hottest day (TXx) at Ra-Iz by year
Year	Hottest day (TXx)
1939	19.3 C (66.7 F)
1940	21.6 C (70.9 F)
1941	17.9 C (64.2 F)
1942	20.9 C (69.6 F)
1943	23.6 C (74.5 F)
1944	18.6 C (65.5 F)
1945	24.7 C (76.5 F)
1946	22.1 C (71.8 F)
1947	20.6 C (69.1 F)
1948	19.2 C (66.6 F)
1949	20.7 C (69.3 F)
1950	19.1 C (66.4 F)
1951	20.5 C (68.9 F)
1952	21.5 C (70.7 F)
1953	23.0 C (73.4 F)
1954	24.0 C (75.2 F)
1955	23.2 C (73.8 F)
1956	20.2 C (68.4 F)
1957	24.0 C (75.2 F)
1958	21.1 C (70.0 F)
1959	19.4 C (66.9 F)
1960	17.4 C (63.3 F)
1961	21.0 C (69.8 F)
1962	20.8 C (69.4 F)
1963	24.1 C (75.4 F)
1964	24.3 C (75.7 F)
1965	19.8 C (67.6 F)
1966	23.7 C (74.7 F)
1967	20.7 C (69.3 F)
1968	19.9 C (67.8 F)
1969	18.4 C (65.1 F)
1970	22.5 C (72.5 F)
1971	18.0 C (64.4 F)
1972	21.1 C (70.0 F)
1973	20.4 C (68.7 F)
1974	23.5 C (74.3 F)
1975	20.6 C (69.1 F)
1976	20.4 C (68.7 F)
1978	21.7 C (71.1 F)
1979	15.6 C (60.1 F)
1980	16.0 C (60.8 F)
1981	22.5 C (72.5 F)
1982	20.3 C (68.5 F)
1983	22.8 C (73.0 F)
1984	21.8 C (71.2 F)
1985	16.5 C (61.7 F)
1986	15.7 C (60.3 F)
1987	22.5 C (72.5 F)
1988	22.7 C (72.9 F)
1989	25.5 C (77.9 F)
1990	26.5 C (79.7 F)
1991	21.4 C (70.5 F)
1992	21.6 C (70.9 F)
1993	22.3 C (72.1 F)
1994	24.5 C (76.1 F)
1995	20.0 C (68.0 F)
1996	11.9 C (53.4 F)
1997	20.0 C (68.0 F)

Coldest night (TNn)

The coldest night of the year at Ra-Iz, 1939 to 1997. The record is -44.1 C (-47.4 F) in 1987, marked on the chart; the median year is -35.6 C (-32.1 F).

Coldest night (TNn) at Ra-Iz by year
Year	Coldest night (TNn)
1939	-36.1 C (-33.0 F)
1940	-39.6 C (-39.3 F)
1941	-34.2 C (-29.6 F)
1942	-35.8 C (-32.4 F)
1943	-32.4 C (-26.3 F)
1944	-26.4 C (-15.5 F)
1945	-33.1 C (-27.6 F)
1946	-35.3 C (-31.5 F)
1947	-35.4 C (-31.7 F)
1948	-36.9 C (-34.4 F)
1949	-33.0 C (-27.4 F)
1950	-35.4 C (-31.7 F)
1951	-41.6 C (-42.9 F)
1952	-39.8 C (-39.6 F)
1953	-38.7 C (-37.7 F)
1954	-37.0 C (-34.6 F)
1955	-36.6 C (-33.9 F)
1956	-32.0 C (-25.6 F)
1957	-34.9 C (-30.8 F)
1958	-35.3 C (-31.5 F)
1959	-31.6 C (-24.9 F)
1960	-38.9 C (-38.0 F)
1961	-31.8 C (-25.2 F)
1962	-32.4 C (-26.3 F)
1963	-38.5 C (-37.3 F)
1964	-41.1 C (-42.0 F)
1965	-34.5 C (-30.1 F)
1966	-39.9 C (-39.8 F)
1967	-37.8 C (-36.0 F)
1968	-34.9 C (-30.8 F)
1969	-37.3 C (-35.1 F)
1970	-39.4 C (-38.9 F)
1971	-40.9 C (-41.6 F)
1972	-34.1 C (-29.4 F)
1973	-39.9 C (-39.8 F)
1974	-37.9 C (-36.2 F)
1975	-29.4 C (-20.9 F)
1976	-32.4 C (-26.3 F)
1978	-40.6 C (-41.1 F)
1979	-41.8 C (-43.2 F)
1980	-38.6 C (-37.5 F)
1981	-36.5 C (-33.7 F)
1982	-37.1 C (-34.8 F)
1983	-28.9 C (-20.0 F)
1984	-36.4 C (-33.5 F)
1985	-34.8 C (-30.6 F)
1986	-36.7 C (-34.1 F)
1987	-44.1 C (-47.4 F)
1988	-32.8 C (-27.0 F)
1989	-32.7 C (-26.9 F)
1990	-37.4 C (-35.3 F)
1991	-37.9 C (-36.2 F)
1992	-34.4 C (-29.9 F)
1993	-30.6 C (-23.1 F)
1994	-35.3 C (-31.5 F)
1995	-27.0 C (-16.6 F)
1996	-24.7 C (-12.5 F)
1997	-33.7 C (-28.7 F)

Wettest day (Rx1day)

The wettest day of the year at Ra-Iz, 1939 to 1997. The record is 81.2 mm (3.2 in) in 1950, marked on the chart; the median year is 40.3 mm (1.6 in).

Wettest day (Rx1day) at Ra-Iz by year
Year	Wettest day (Rx1day)
1939	39.1 mm (1.5 in)
1940	34.7 mm (1.4 in)
1941	28.4 mm (1.1 in)
1942	46.4 mm (1.8 in)
1943	68.8 mm (2.7 in)
1944	49.5 mm (1.9 in)
1945	47.4 mm (1.9 in)
1946	20.5 mm (0.8 in)
1947	31.9 mm (1.3 in)
1948	66.9 mm (2.6 in)
1949	37.2 mm (1.5 in)
1950	81.2 mm (3.2 in)
1951	56.2 mm (2.2 in)
1952	36.6 mm (1.4 in)
1953	80.4 mm (3.2 in)
1954	29.7 mm (1.2 in)
1955	46.4 mm (1.8 in)
1956	64.8 mm (2.6 in)
1957	41.9 mm (1.6 in)
1958	40.7 mm (1.6 in)
1959	48.6 mm (1.9 in)
1960	66.3 mm (2.6 in)
1961	28.6 mm (1.1 in)
1962	50.7 mm (2.0 in)
1963	68.0 mm (2.7 in)
1964	35.1 mm (1.4 in)
1965	63.7 mm (2.5 in)
1966	62.4 mm (2.5 in)
1967	27.4 mm (1.1 in)
1968	56.0 mm (2.2 in)
1969	38.1 mm (1.5 in)
1970	26.2 mm (1.0 in)
1971	40.4 mm (1.6 in)
1972	43.9 mm (1.7 in)
1973	35.1 mm (1.4 in)
1974	30.8 mm (1.2 in)
1975	47.7 mm (1.9 in)
1976	37.5 mm (1.5 in)
1978	37.2 mm (1.5 in)
1979	42.5 mm (1.7 in)
1980	40.1 mm (1.6 in)
1981	41.2 mm (1.6 in)
1982	27.5 mm (1.1 in)
1983	27.0 mm (1.1 in)
1984	53.5 mm (2.1 in)
1985	35.6 mm (1.4 in)
1986	50.8 mm (2.0 in)
1987	26.2 mm (1.0 in)
1988	21.6 mm (0.9 in)
1989	28.7 mm (1.1 in)
1990	63.7 mm (2.5 in)
1991	25.0 mm (1.0 in)
1992	69.8 mm (2.7 in)
1993	72.7 mm (2.9 in)
1994	30.2 mm (1.2 in)
1995	31.0 mm (1.2 in)
1996	36.9 mm (1.5 in)
1997	22.9 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ra-Iz, 1939 to 1997. The record is 164.1 mm (6.5 in) in 1993, marked on the chart; the median year is 78.2 mm (3.1 in).

Wettest five days (Rx5day) at Ra-Iz by year
Year	Wettest five days (Rx5day)
1939	67.4 mm (2.7 in)
1940	59.6 mm (2.3 in)
1941	50.2 mm (2.0 in)
1942	86.1 mm (3.4 in)
1943	97.3 mm (3.8 in)
1944	80.2 mm (3.2 in)
1945	73.1 mm (2.9 in)
1946	29.1 mm (1.1 in)
1947	67.6 mm (2.7 in)
1948	95.3 mm (3.8 in)
1949	60.7 mm (2.4 in)
1950	87.1 mm (3.4 in)
1951	78.5 mm (3.1 in)
1952	71.4 mm (2.8 in)
1953	121.5 mm (4.8 in)
1954	58.2 mm (2.3 in)
1955	75.8 mm (3.0 in)
1956	110.0 mm (4.3 in)
1957	85.3 mm (3.4 in)
1958	49.1 mm (1.9 in)
1959	93.3 mm (3.7 in)
1960	80.6 mm (3.2 in)
1961	57.2 mm (2.3 in)
1962	109.2 mm (4.3 in)
1963	119.4 mm (4.7 in)
1964	88.7 mm (3.5 in)
1965	128.7 mm (5.1 in)
1966	109.4 mm (4.3 in)
1967	54.3 mm (2.1 in)
1968	70.5 mm (2.8 in)
1969	72.4 mm (2.9 in)
1970	54.8 mm (2.2 in)
1971	96.8 mm (3.8 in)
1972	87.5 mm (3.4 in)
1973	88.8 mm (3.5 in)
1974	56.3 mm (2.2 in)
1975	58.3 mm (2.3 in)
1976	66.4 mm (2.6 in)
1978	44.1 mm (1.7 in)
1979	84.3 mm (3.3 in)
1980	112.3 mm (4.4 in)
1981	123.5 mm (4.9 in)
1982	80.6 mm (3.2 in)
1983	71.9 mm (2.8 in)
1984	65.1 mm (2.6 in)
1985	52.9 mm (2.1 in)
1986	84.3 mm (3.3 in)
1987	70.3 mm (2.8 in)
1988	45.2 mm (1.8 in)
1989	48.3 mm (1.9 in)
1990	82.8 mm (3.3 in)
1991	83.1 mm (3.3 in)
1992	77.8 mm (3.1 in)
1993	164.1 mm (6.5 in)
1994	83.2 mm (3.3 in)
1995	61.4 mm (2.4 in)
1996	81.5 mm (3.2 in)
1997	33.9 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ra-Iz, 1939 to 1997. The record is 79 days in 1942, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Ra-Iz by year
Year	Longest dry spell (CDD)
1939	22 days
1940	37 days
1941	61 days
1942	79 days
1943	39 days
1944	28 days
1945	53 days
1946	39 days
1947	40 days
1948	19 days
1949	27 days
1950	24 days
1951	32 days
1952	42 days
1953	27 days
1954	15 days
1955	11 days
1956	24 days
1957	19 days
1958	26 days
1959	13 days
1960	29 days
1961	22 days
1962	15 days
1963	20 days
1964	33 days
1965	14 days
1966	8 days
1967	11 days
1968	18 days
1969	28 days
1970	9 days
1971	10 days
1972	32 days
1973	15 days
1974	21 days
1975	15 days
1976	22 days
1978	14 days
1979	21 days
1980	17 days
1981	15 days
1982	24 days
1983	15 days
1984	12 days
1985	42 days
1986	22 days
1987	11 days
1988	17 days
1989	19 days
1990	18 days
1991	13 days
1992	19 days
1993	21 days
1994	14 days
1995	8 days
1996	15 days
1997	14 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

49 years with a frost

Across 49 years with a frost, the median last spring frost at Ra-Iz falls on 26 June and the median first autumn frost on 10 July, which leaves a median of 16 days between them.

Fitted over all years, the growing season changes by +1.2 days per decade at this station.

Frost dates and growing season at Ra-Iz
Measure	Median, all years	Earliest period	Recent period (1958 to 1992)	Recent against earliest	Fitted trend
Last spring frost	26 June	n/a	26 June	n/a	-0.1 days per decade
First autumn frost	10 July	n/a	14 July	n/a	+1.1 days per decade
Growing days	16 days	n/a	19 days	n/a	+1.2 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

53 years, 1939 to 1997

A day with at least 41.6 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 93.2 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Ra-Iz: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.6 mm (1.6 in)
5 years	56.2 mm (2.2 in)
10 years	65.5 mm (2.6 in)
25 years	77.0 mm (3.0 in)
50 years	85.2 mm (3.4 in)
100 years	93.2 mm (3.7 in)	Longer than the 53 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, 53 years of values from 1939 to 1997.

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: 81.2 mm (3.2 in) in 1950; 80.4 mm (3.2 in) in 1953; 69.8 mm (2.7 in) in 1992.

Download the Data

Data for Ra-Iz standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ra-Iz 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 2026-10-14 (14 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).