Wyola 1 SW Weather Records (USC00249175)

Record envelope, standing records and threshold days for Wyola 1 SW (USC00249175), Montana, United States, with 85 years of record.

Key Facts for Wyola 1 SW

Wyola 1 SW (USC00249175) is a weather station in Montana, United States at 45.12 latitude and -107.41 longitude, 1,137 m (3,730 ft) above sea level.
The station reports from 1922 to 2006, 85 years of record.
1,464 records set at Wyola 1 SW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wyola 1 SW set a daily record low minimum temperature of -1.1 C (30.0 F) on 2 September 2006.

About the Station

Location: Montana, United States, 45.12 latitude, -107.41 longitude.
Elevation: 1,137 m (3,730 ft).
Period of record: 1922 to 2006, 85 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

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 Wyola 1 SW. 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 Wyola 1 SW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.6 C (69.1 F)	-41.1 C (-42.0 F)	n/a	n/a
Feb	23.3 C (73.9 F)	-41.7 C (-43.1 F)	n/a	n/a
Mar	26.7 C (80.1 F)	-33.9 C (-29.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-20.0 C (-4.0 F)	n/a	n/a
May	35.6 C (96.1 F)	-9.4 C (15.1 F)	n/a	n/a
Jun	41.7 C (107.1 F)	-3.3 C (26.1 F)	n/a	n/a
Jul	42.2 C (108.0 F)	-2.2 C (28.0 F)	n/a	n/a
Aug	42.2 C (108.0 F)	-2.8 C (27.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	-9.4 C (15.1 F)	n/a	n/a
Oct	33.9 C (93.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Nov	26.1 C (79.0 F)	-38.3 C (-36.9 F)	n/a	n/a
Dec	25.6 C (78.1 F)	-43.3 C (-45.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Wyola 1 SW still stand. 1995 holds the most, with 51.

Standing records at Wyola 1 SW by the year they were set
Year set	Standing records
1922	19
1923	12
1931	20
1932	30
1933	20
1934	33
1935	14
1936	47
1937	21
1938	6
1939	18
1940	15
1941	3
1942	13
1943	26
1944	6
1945	20
1946	23
1947	21
1948	19
1949	31
1950	30
1951	24
1952	18
1953	20
1954	27
1955	26
1956	11
1957	15
1958	19
1959	23
1960	27
1961	14
1962	20
1963	21
1964	15
1965	27
1966	23
1967	13
1968	15
1969	19
1970	11
1971	19
1972	30
1973	12
1974	16
1975	15
1976	11
1977	5
1978	18
1979	11
1980	16
1981	14
1982	14
1983	26
1984	15
1985	30
1986	25
1987	13
1988	15
1989	24
1990	33
1991	17
1992	26
1993	16
1994	16
1995	51
1996	29
1997	28
1998	7
1999	7
2000	6
2001	9
2002	17
2003	11
2004	9
2005	10
2006	8

All-Time Record Progression

10 new records

10 all-time records were set at Wyola 1 SW between 29 August 1964 and 7 May 2005. Each dot is a new record.

When Wyola 1 SW set new all-time records
Date	Kind	Detail
1964-08-29	Record daily precipitation	Record daily precipitation 51.3 mm (2.0 in)
1967-06-15	Record daily precipitation	Record daily precipitation 54.9 mm (2.2 in)
1978-05-18	Record daily precipitation	Record daily precipitation 61.0 mm (2.4 in)
1982-06-14	Record daily precipitation	Record daily precipitation 81.0 mm (3.2 in)
1983-12-22	Record low minimum temperature	Record low minimum temperature -42.2 C (-44.0 F)
1983-12-24	Record low maximum temperature	Record low maximum temperature -30.6 C (-23.1 F)
1983-12-24	Record low minimum temperature	Record low minimum temperature -43.3 C (-45.9 F)
1989-12-14	Record daily snowfall	Record daily snowfall 61.0 cm (24.0 in)
1996-07-05	Record high minimum temperature	Record high minimum temperature 23.9 C (75.0 F)
2005-05-07	Record daily precipitation	Record daily precipitation 82.8 mm (3.3 in)

Wettest Day of Each Month

May: 82.8 mm (3.3 in)

The wettest day on record for each calendar month at Wyola 1 SW. The most was 82.8 mm (3.3 in) on 7 May 2005.

Record daily precipitation for each month at Wyola 1 SW
Month	Record daily precipitation (mm)	Date
Jan	31.5 mm (1.2 in)	2 January 1972
Feb	35.6 mm (1.4 in)	8 February 1923
Mar	51.1 mm (2.0 in)	21 March 1946
Apr	56.9 mm (2.2 in)	8 April 2001
May	82.8 mm (3.3 in)	7 May 2005
Jun	81.0 mm (3.2 in)	14 June 1982
Jul	53.3 mm (2.1 in)	4 July 1979
Aug	51.3 mm (2.0 in)	29 August 1964
Sep	50.8 mm (2.0 in)	29 September 1923
Oct	47.5 mm (1.9 in)	31 October 1974
Nov	28.4 mm (1.1 in)	14 November 1991
Dec	17.8 mm (0.7 in)	30 December 1922

Period of Record Coverage

1922 to 2006

78 years of record at Wyola 1 SW, 1922 to 2006. 18 years have data for under 90 percent of days and are left out of rankings: 1922, 1923, 1931, 1936, 1938, 1939, 1940, 1941 and others.

Days with data per year at Wyola 1 SW
Year	Days with data	Share of year	Complete
1922	212	58%	No
1923	270	74%	No
1931	211	58%	No
1932	363	99%	Yes
1933	364	100%	Yes
1934	363	99%	Yes
1935	364	100%	Yes
1936	317	87%	No
1937	330	90%	Yes
1938	137	38%	No
1939	194	53%	No
1940	318	87%	No
1941	310	85%	No
1942	217	59%	No
1943	362	99%	Yes
1944	365	100%	Yes
1945	363	99%	Yes
1946	365	100%	Yes
1947	363	99%	Yes
1948	348	95%	Yes
1949	362	99%	Yes
1950	365	100%	Yes
1951	364	100%	Yes
1952	366	100%	Yes
1953	362	99%	Yes
1954	361	99%	Yes
1955	359	98%	Yes
1956	364	99%	Yes
1957	358	98%	Yes
1958	364	100%	Yes
1959	364	100%	Yes
1960	366	100%	Yes
1961	363	99%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	364	100%	Yes
1968	366	100%	Yes
1969	364	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	362	99%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	342	94%	Yes
1978	351	96%	Yes
1979	358	98%	Yes
1980	362	99%	Yes
1981	363	99%	Yes
1982	351	96%	Yes
1983	359	98%	Yes
1984	361	99%	Yes
1985	359	98%	Yes
1986	352	96%	Yes
1987	352	96%	Yes
1988	356	97%	Yes
1989	340	93%	Yes
1990	340	93%	Yes
1991	341	93%	Yes
1992	351	96%	Yes
1993	346	95%	Yes
1994	348	95%	Yes
1995	352	96%	Yes
1996	355	97%	Yes
1997	354	97%	Yes
1998	273	75%	No
1999	298	82%	No
2000	289	79%	No
2001	310	85%	No
2002	303	83%	No
2003	275	75%	No
2004	290	79%	No
2005	256	70%	No
2006	136	37%	No

Latest Records

Latest records at Wyola 1 SW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 September 2006	Wyola 1 SW, US	daily low min	-1.1 C (30.0 F)	0.5 C (0.9 F)	47 years	23 of 100 (Routine)
1 September 2006	Wyola 1 SW, US	daily low min	-0.6 C (30.9 F)	1.7 C (3.1 F)	73 years	33 of 100 (Routine)
25 July 2006	Wyola 1 SW, US	daily high max	40.6 C (105.1 F)	0.6 C (1.1 F)	75 years	31 of 100 (Routine)
17 July 2006	Wyola 1 SW, US	daily high max	41.7 C (107.1 F)	2.8 C (5.0 F)	15 years	18 of 100 (Routine)
14 July 2006	Wyola 1 SW, US	daily high max	41.1 C (106.0 F)	0.5 C (0.9 F)	52 years	24 of 100 (Routine)
29 March 2006	Wyola 1 SW, US	daily rain	12.2 mm (0.5 in)	4.8 mm (0.19 in)	61 years	20 of 100 (Routine)
29 March 2006	Wyola 1 SW, US	daily high min	5.0 C (41.0 F)	0.6 C (1.1 F)	60 years	26 of 100 (Routine)
19 March 2006	Wyola 1 SW, US	daily rain	8.6 mm (0.34 in)	0.7 mm (0.03 in)	24 years	16 of 100 (Routine)
18 February 2006	Wyola 1 SW, US	daily low max	-13.9 C (7.0 F)	2.2 C (4.0 F)	70 years	31 of 100 (Routine)
11 January 2006	Wyola 1 SW, US	daily high min (Tie)	-0.6 C (30.9 F)	tie	59 years	6 of 100 (Routine)
6 January 2006	Wyola 1 SW, US	daily high max	17.2 C (63.0 F)	0.5 C (0.9 F)	58 years	25 of 100 (Routine)
18 August 2005	Wyola 1 SW, US	daily low max	16.1 C (61.0 F)	4.5 C (8.1 F)	27 years	26 of 100 (Routine)
14 August 2005	Wyola 1 SW, US	daily low min	2.8 C (37.0 F)	0.5 C (0.9 F)	20 years	15 of 100 (Routine)
13 August 2005	Wyola 1 SW, US	daily low max	16.7 C (62.1 F)	1.6 C (2.9 F)	26 years	18 of 100 (Routine)
12 August 2005	Wyola 1 SW, US	daily low max	19.4 C (66.9 F)	0.6 C (1.1 F)	20 years	15 of 100 (Routine)
15 July 2005	Wyola 1 SW, US	daily high max (Tie)	39.4 C (102.9 F)	tie	68 years	7 of 100 (Routine)
13 July 2005	Wyola 1 SW, US	daily high max (Tie)	39.4 C (102.9 F)	tie	52 years	5 of 100 (Routine)
9 July 2005	Wyola 1 SW, US	daily high max	38.9 C (102.0 F)	0.6 C (1.1 F)	64 years	28 of 100 (Routine)
7 May 2005	Wyola 1 SW, US	all-time rain	82.8 mm (3.3 in)	1.8 mm (0.07 in)	22 years	36 of 100 (Notable)
27 April 2005	Wyola 1 SW, US	daily low min (Tie)	-9.4 C (15.1 F)	tie	10 years	2 of 100 (Routine)

Climate Trend

61 complete years, 1932 to 2004

One stripe for each of 61 complete years at Wyola 1 SW, 1932 to 2004. Blue stripes are years cooler than the station's own mean of 7.4 C (45.3 F); red stripes are warmer. The coolest year was 1985, at 5.2 C (41.3 F), and the warmest was 1999, at 9.2 C (48.5 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Wyola 1 SW as warming stripes, 1932 to 2004
Year	Annual mean temperature	Difference from the station mean
1932	6.5 C	-0.95 C
1933	7.4 C	-0.05 C
1934	9.0 C	+1.62 C
1935	7.0 C	-0.42 C
1943	7.5 C	+0.11 C
1944	6.3 C	-1.10 C
1945	6.3 C	-1.14 C
1946	8.3 C	+0.87 C
1947	7.3 C	-0.07 C
1948	7.3 C	-0.11 C
1949	7.0 C	-0.45 C
1950	6.6 C	-0.82 C
1951	6.1 C	-1.31 C
1952	7.8 C	+0.42 C
1953	9.1 C	+1.69 C
1954	8.2 C	+0.82 C
1955	6.7 C	-0.70 C
1956	7.7 C	+0.28 C
1957	7.3 C	-0.10 C
1958	8.4 C	+0.96 C
1959	7.4 C	-0.04 C
1960	8.0 C	+0.64 C
1961	8.4 C	+0.96 C
1962	7.7 C	+0.31 C
1963	8.6 C	+1.18 C
1964	7.3 C	-0.06 C
1965	7.4 C	0.00 C
1966	7.9 C	+0.47 C
1967	7.7 C	+0.31 C
1968	7.0 C	-0.39 C
1969	6.9 C	-0.55 C
1970	7.1 C	-0.35 C
1971	6.9 C	-0.46 C
1972	6.9 C	-0.46 C
1973	7.6 C	+0.20 C
1974	8.1 C	+0.71 C
1975	6.4 C	-1.05 C
1976	8.3 C	+0.85 C
1979	5.7 C	-1.72 C
1980	7.1 C	-0.34 C
1981	8.3 C	+0.85 C
1982	5.7 C	-1.67 C
1983	6.8 C	-0.63 C
1984	6.6 C	-0.85 C
1985	5.2 C	-2.22 C
1986	7.7 C	+0.26 C
1987	8.0 C	+0.58 C
1988	8.1 C	+0.65 C
1989	6.8 C	-0.58 C
1990	8.7 C	+1.26 C
1991	7.8 C	+0.40 C
1992	7.8 C	+0.38 C
1993	5.8 C	-1.65 C
1994	7.6 C	+0.16 C
1995	8.4 C	+1.04 C
1996	6.4 C	-1.03 C
1997	7.6 C	+0.24 C
1999	9.2 C	+1.75 C
2001	8.2 C	+0.81 C
2002	7.4 C	-0.01 C
2004	7.9 C	+0.51 C

The fitted trend in annual mean temperature here over 1932 to 2004 is 0.02 C (-0.10 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.18 to 0.24) per decade. The slope is a straight line fitted to 61 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Wyola 1 SW
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.02 C (-0.10 to 0.14) per decade	0.03 F (-0.18 to 0.24) per decade	1932 to 2004	61	Not clearly different from zero
Mean daily maximum	0.04 C (-0.09 to 0.17) per decade	0.1 F (-0.2 to 0.3) per decade	1932 to 2004	61	Not clearly different from zero
Mean daily minimum	0.00 C (-0.12 to 0.12) per decade	0.00 F (-0.22 to 0.22) per decade	1932 to 2004	61	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

1922 to 2006

Yearly extremes at Wyola 1 SW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.2 C (108.0 F)	1936	38.3 C (100.9 F)	78
Coldest night (TNn)	-43.3 C (-45.9 F)	1983	-32.8 C (-27.0 F)	78
Wettest day (Rx1day)	82.8 mm (3.3 in)	2005	31.8 mm (1.3 in)	78
Wettest five days (Rx5day)	148.9 mm (5.9 in)	2005	51.1 mm (2.0 in)	78
Longest dry spell (CDD)	70 days	1983	28 days	78

Hottest day (TXx)

The hottest day of the year at Wyola 1 SW, 1922 to 2006. The record is 42.2 C (108.0 F) in 1936, marked on the chart; the median year is 38.3 C (100.9 F).

Hottest day (TXx) at Wyola 1 SW by year
Year	Hottest day (TXx)
1922	37.2 C (99.0 F)
1923	37.2 C (99.0 F)
1931	41.7 C (107.1 F)
1932	39.4 C (102.9 F)
1933	40.6 C (105.1 F)
1934	40.0 C (104.0 F)
1935	41.1 C (106.0 F)
1936	42.2 C (108.0 F)
1937	41.1 C (106.0 F)
1938	28.9 C (84.0 F)
1939	30.6 C (87.1 F)
1940	40.6 C (105.1 F)
1941	38.3 C (100.9 F)
1942	35.0 C (95.0 F)
1943	37.8 C (100.0 F)
1944	36.1 C (97.0 F)
1945	37.2 C (99.0 F)
1946	37.8 C (100.0 F)
1947	40.0 C (104.0 F)
1948	38.9 C (102.0 F)
1949	42.2 C (108.0 F)
1950	38.9 C (102.0 F)
1951	38.9 C (102.0 F)
1952	38.3 C (100.9 F)
1953	40.6 C (105.1 F)
1954	40.6 C (105.1 F)
1955	38.9 C (102.0 F)
1956	39.4 C (102.9 F)
1957	37.8 C (100.0 F)
1958	38.3 C (100.9 F)
1959	41.1 C (106.0 F)
1960	40.0 C (104.0 F)
1961	40.6 C (105.1 F)
1962	36.7 C (98.1 F)
1963	37.8 C (100.0 F)
1964	38.9 C (102.0 F)
1965	38.9 C (102.0 F)
1966	40.0 C (104.0 F)
1967	37.8 C (100.0 F)
1968	37.2 C (99.0 F)
1969	38.3 C (100.9 F)
1970	38.3 C (100.9 F)
1971	38.9 C (102.0 F)
1972	37.2 C (99.0 F)
1973	37.8 C (100.0 F)
1974	36.7 C (98.1 F)
1975	37.2 C (99.0 F)
1976	38.9 C (102.0 F)
1977	37.8 C (100.0 F)
1978	35.6 C (96.1 F)
1979	35.0 C (95.0 F)
1980	37.2 C (99.0 F)
1981	35.0 C (95.0 F)
1982	35.0 C (95.0 F)
1983	37.2 C (99.0 F)
1984	37.2 C (99.0 F)
1985	35.6 C (96.1 F)
1986	36.1 C (97.0 F)
1987	37.2 C (99.0 F)
1988	38.3 C (100.9 F)
1989	40.0 C (104.0 F)
1990	37.2 C (99.0 F)
1991	38.9 C (102.0 F)
1992	36.7 C (98.1 F)
1993	36.1 C (97.0 F)
1994	36.7 C (98.1 F)
1995	40.6 C (105.1 F)
1996	37.8 C (100.0 F)
1997	37.8 C (100.0 F)
1998	37.2 C (99.0 F)
1999	38.9 C (102.0 F)
2000	40.6 C (105.1 F)
2001	39.4 C (102.9 F)
2002	41.7 C (107.1 F)
2003	40.0 C (104.0 F)
2004	37.2 C (99.0 F)
2005	39.4 C (102.9 F)
2006	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at Wyola 1 SW, 1922 to 2006. The record is -43.3 C (-45.9 F) in 1983, marked on the chart; the median year is -32.8 C (-27.0 F).

Coldest night (TNn) at Wyola 1 SW by year
Year	Coldest night (TNn)
1922	-33.3 C (-27.9 F)
1923	-37.8 C (-36.0 F)
1931	-25.0 C (-13.0 F)
1932	-38.9 C (-38.0 F)
1933	-39.4 C (-38.9 F)
1934	-30.0 C (-22.0 F)
1935	-32.8 C (-27.0 F)
1936	-41.7 C (-43.1 F)
1937	-33.9 C (-29.0 F)
1938	-28.9 C (-20.0 F)
1939	-34.4 C (-29.9 F)
1940	-33.3 C (-27.9 F)
1941	-26.1 C (-15.0 F)
1942	-27.2 C (-17.0 F)
1943	-33.3 C (-27.9 F)
1944	-31.1 C (-24.0 F)
1945	-32.8 C (-27.0 F)
1946	-27.8 C (-18.0 F)
1947	-28.3 C (-18.9 F)
1948	-31.7 C (-25.1 F)
1949	-39.4 C (-38.9 F)
1950	-35.6 C (-32.1 F)
1951	-38.3 C (-36.9 F)
1952	-30.0 C (-22.0 F)
1953	-24.4 C (-11.9 F)
1954	-32.8 C (-27.0 F)
1955	-31.7 C (-25.1 F)
1956	-35.6 C (-32.1 F)
1957	-35.6 C (-32.1 F)
1958	-24.4 C (-11.9 F)
1959	-38.3 C (-36.9 F)
1960	-31.1 C (-24.0 F)
1961	-31.1 C (-24.0 F)
1962	-35.6 C (-32.1 F)
1963	-39.4 C (-38.9 F)
1964	-35.0 C (-31.0 F)
1965	-28.9 C (-20.0 F)
1966	-28.9 C (-20.0 F)
1967	-31.1 C (-24.0 F)
1968	-35.6 C (-32.1 F)
1969	-32.8 C (-27.0 F)
1970	-32.2 C (-26.0 F)
1971	-30.6 C (-23.1 F)
1972	-35.0 C (-31.0 F)
1973	-33.9 C (-29.0 F)
1974	-35.6 C (-32.1 F)
1975	-29.4 C (-20.9 F)
1976	-28.9 C (-20.0 F)
1977	-31.1 C (-24.0 F)
1978	-36.7 C (-34.1 F)
1979	-36.7 C (-34.1 F)
1980	-34.4 C (-29.9 F)
1981	-35.6 C (-32.1 F)
1982	-34.4 C (-29.9 F)
1983	-43.3 C (-45.9 F)
1984	-35.6 C (-32.1 F)
1985	-36.7 C (-34.1 F)
1986	-33.3 C (-27.9 F)
1987	-21.7 C (-7.1 F)
1988	-27.8 C (-18.0 F)
1989	-37.8 C (-36.0 F)
1990	-38.3 C (-36.9 F)
1991	-36.7 C (-34.1 F)
1992	-26.7 C (-16.1 F)
1993	-30.6 C (-23.1 F)
1994	-32.2 C (-26.0 F)
1995	-26.7 C (-16.1 F)
1996	-37.8 C (-36.0 F)
1997	-41.1 C (-42.0 F)
1998	-30.6 C (-23.1 F)
1999	-23.3 C (-9.9 F)
2000	-28.9 C (-20.0 F)
2001	-27.8 C (-18.0 F)
2002	-28.3 C (-18.9 F)
2003	-31.7 C (-25.1 F)
2004	-33.9 C (-29.0 F)
2005	-29.4 C (-20.9 F)
2006	-29.4 C (-20.9 F)

Wettest day (Rx1day)

The wettest day of the year at Wyola 1 SW, 1922 to 2006. The record is 82.8 mm (3.3 in) in 2005, marked on the chart; the median year is 31.8 mm (1.3 in).

Wettest day (Rx1day) at Wyola 1 SW by year
Year	Wettest day (Rx1day)
1922	24.6 mm (1.0 in)
1923	50.8 mm (2.0 in)
1931	19.1 mm (0.8 in)
1932	37.1 mm (1.5 in)
1933	24.4 mm (1.0 in)
1934	19.6 mm (0.8 in)
1935	21.1 mm (0.8 in)
1936	17.8 mm (0.7 in)
1937	20.8 mm (0.8 in)
1938	24.1 mm (0.9 in)
1939	12.7 mm (0.5 in)
1940	38.9 mm (1.5 in)
1941	48.5 mm (1.9 in)
1942	39.4 mm (1.6 in)
1943	24.1 mm (0.9 in)
1944	44.2 mm (1.7 in)
1945	29.7 mm (1.2 in)
1946	51.1 mm (2.0 in)
1947	37.6 mm (1.5 in)
1948	33.0 mm (1.3 in)
1949	29.7 mm (1.2 in)
1950	23.9 mm (0.9 in)
1951	35.8 mm (1.4 in)
1952	29.5 mm (1.2 in)
1953	38.6 mm (1.5 in)
1954	19.1 mm (0.8 in)
1955	23.9 mm (0.9 in)
1956	41.7 mm (1.6 in)
1957	49.5 mm (1.9 in)
1958	39.1 mm (1.5 in)
1959	31.5 mm (1.2 in)
1960	30.2 mm (1.2 in)
1961	27.2 mm (1.1 in)
1962	38.9 mm (1.5 in)
1963	46.5 mm (1.8 in)
1964	51.3 mm (2.0 in)
1965	25.4 mm (1.0 in)
1966	22.4 mm (0.9 in)
1967	54.9 mm (2.2 in)
1968	31.8 mm (1.3 in)
1969	34.8 mm (1.4 in)
1970	37.3 mm (1.5 in)
1971	34.0 mm (1.3 in)
1972	31.5 mm (1.2 in)
1973	30.5 mm (1.2 in)
1974	47.5 mm (1.9 in)
1975	29.2 mm (1.1 in)
1976	53.3 mm (2.1 in)
1977	24.4 mm (1.0 in)
1978	61.0 mm (2.4 in)
1979	53.3 mm (2.1 in)
1980	44.2 mm (1.7 in)
1981	32.5 mm (1.3 in)
1982	81.0 mm (3.2 in)
1983	22.9 mm (0.9 in)
1984	20.3 mm (0.8 in)
1985	24.1 mm (0.9 in)
1986	64.5 mm (2.5 in)
1987	30.5 mm (1.2 in)
1988	46.5 mm (1.8 in)
1989	26.9 mm (1.1 in)
1990	25.4 mm (1.0 in)
1991	28.4 mm (1.1 in)
1992	48.8 mm (1.9 in)
1993	35.6 mm (1.4 in)
1994	43.4 mm (1.7 in)
1995	31.8 mm (1.3 in)
1996	16.3 mm (0.6 in)
1997	62.7 mm (2.5 in)
1998	27.4 mm (1.1 in)
1999	29.5 mm (1.2 in)
2000	25.1 mm (1.0 in)
2001	56.9 mm (2.2 in)
2002	38.1 mm (1.5 in)
2003	34.5 mm (1.4 in)
2004	28.4 mm (1.1 in)
2005	82.8 mm (3.3 in)
2006	12.2 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wyola 1 SW, 1922 to 2006. The record is 148.9 mm (5.9 in) in 2005, marked on the chart; the median year is 51.1 mm (2.0 in).

Wettest five days (Rx5day) at Wyola 1 SW by year
Year	Wettest five days (Rx5day)
1922	52.8 mm (2.1 in)
1923	128.3 mm (5.1 in)
1931	44.7 mm (1.8 in)
1932	54.1 mm (2.1 in)
1933	41.6 mm (1.6 in)
1934	36.4 mm (1.4 in)
1935	39.6 mm (1.6 in)
1936	23.6 mm (0.9 in)
1937	25.6 mm (1.0 in)
1938	52.0 mm (2.0 in)
1939	21.3 mm (0.8 in)
1940	75.2 mm (3.0 in)
1941	83.1 mm (3.3 in)
1942	78.0 mm (3.1 in)
1943	43.3 mm (1.7 in)
1944	93.5 mm (3.7 in)
1945	50.9 mm (2.0 in)
1946	60.3 mm (2.4 in)
1947	60.2 mm (2.4 in)
1948	47.5 mm (1.9 in)
1949	37.2 mm (1.5 in)
1950	34.3 mm (1.4 in)
1951	57.5 mm (2.3 in)
1952	50.4 mm (2.0 in)
1953	51.3 mm (2.0 in)
1954	28.8 mm (1.1 in)
1955	42.9 mm (1.7 in)
1956	49.1 mm (1.9 in)
1957	67.3 mm (2.6 in)
1958	50.2 mm (2.0 in)
1959	45.7 mm (1.8 in)
1960	34.8 mm (1.4 in)
1961	54.4 mm (2.1 in)
1962	40.4 mm (1.6 in)
1963	89.7 mm (3.5 in)
1964	77.3 mm (3.0 in)
1965	38.3 mm (1.5 in)
1966	25.9 mm (1.0 in)
1967	102.1 mm (4.0 in)
1968	55.6 mm (2.2 in)
1969	55.9 mm (2.2 in)
1970	53.1 mm (2.1 in)
1971	45.5 mm (1.8 in)
1972	37.9 mm (1.5 in)
1973	58.6 mm (2.3 in)
1974	66.6 mm (2.6 in)
1975	76.4 mm (3.0 in)
1976	78.7 mm (3.1 in)
1977	53.1 mm (2.1 in)
1978	129.9 mm (5.1 in)
1979	54.1 mm (2.1 in)
1980	44.2 mm (1.7 in)
1981	57.6 mm (2.3 in)
1982	111.9 mm (4.4 in)
1983	32.6 mm (1.3 in)
1984	45.0 mm (1.8 in)
1985	34.8 mm (1.4 in)
1986	107.9 mm (4.2 in)
1987	40.7 mm (1.6 in)
1988	52.0 mm (2.0 in)
1989	35.6 mm (1.4 in)
1990	49.6 mm (2.0 in)
1991	40.4 mm (1.6 in)
1992	58.7 mm (2.3 in)
1993	80.5 mm (3.2 in)
1994	56.2 mm (2.2 in)
1995	52.9 mm (2.1 in)
1996	44.6 mm (1.8 in)
1997	81.5 mm (3.2 in)
1998	56.3 mm (2.2 in)
1999	48.8 mm (1.9 in)
2000	33.3 mm (1.3 in)
2001	22.9 mm (0.9 in)
2002	38.6 mm (1.5 in)
2003	52.2 mm (2.1 in)
2004	43.2 mm (1.7 in)
2005	148.9 mm (5.9 in)
2006	22.9 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wyola 1 SW, 1922 to 2006. The record is 70 days in 1983, marked on the chart; the median year is 28 days.

Longest dry spell (CDD) at Wyola 1 SW by year
Year	Longest dry spell (CDD)
1922	39 days
1923	16 days
1931	33 days
1932	18 days
1933	44 days
1934	33 days
1935	25 days
1936	24 days
1937	58 days
1938	22 days
1939	49 days
1940	25 days
1941	25 days
1942	17 days
1943	33 days
1944	26 days
1945	21 days
1946	20 days
1947	37 days
1948	46 days
1949	29 days
1950	28 days
1951	22 days
1952	29 days
1953	35 days
1954	31 days
1955	30 days
1956	28 days
1957	31 days
1958	24 days
1959	42 days
1960	37 days
1961	43 days
1962	27 days
1963	33 days
1964	40 days
1965	42 days
1966	40 days
1967	28 days
1968	26 days
1969	21 days
1970	32 days
1971	21 days
1972	24 days
1973	34 days
1974	29 days
1975	27 days
1976	32 days
1977	19 days
1978	28 days
1979	25 days
1980	19 days
1981	26 days
1982	18 days
1983	70 days
1984	36 days
1985	19 days
1986	28 days
1987	31 days
1988	37 days
1989	20 days
1990	28 days
1991	23 days
1992	31 days
1993	28 days
1994	26 days
1995	23 days
1996	41 days
1997	31 days
1998	47 days
1999	52 days
2000	26 days
2001	35 days
2002	34 days
2003	26 days
2004	49 days
2005	24 days
2006	23 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

61 years with a frost

Across 61 years with a frost, the median last spring frost at Wyola 1 SW falls on 30 May and the median first autumn frost on 12 September, which leaves a median of 103 days between them.

In 1970 to 2004 the median growing season was 102 days. That is 5 days fewer than in 1932 to 1968.

Fitted over all years, the growing season changes by 0.0 days per decade at this station.

Frost dates and growing season at Wyola 1 SW
Measure	Median, all years	Earliest period (1932 to 1968)	Recent period (1970 to 2004)	Recent against earliest	Fitted trend
Last spring frost	30 May	31 May	28 May	3 days earlier	-0.9 days per decade
First autumn frost	12 September	12 September	12 September	no change	-0.9 days per decade
Growing days	103 days	107 days	102 days	5 days fewer	0.0 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

65 years, 1932 to 2004

A day with at least 33.8 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 80.8 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Wyola 1 SW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	33.8 mm (1.3 in)
5 years	45.5 mm (1.8 in)
10 years	53.6 mm (2.1 in)
25 years	64.2 mm (2.5 in)
50 years	72.4 mm (2.9 in)
100 years	80.8 mm (3.2 in)	Longer than the 65 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, 65 years of values from 1932 to 2004.

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: 81.0 mm (3.2 in) in 1982; 64.5 mm (2.5 in) in 1986; 62.7 mm (2.5 in) in 1997.

Station Changes

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

Download the Data

Data for Wyola 1 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wyola 1 SW 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).