Record envelope, standing records and threshold days for Sisters (USC00357857), Oregon, United States, with 67 years of record.
Key Facts for Sisters
Sisters (USC00357857) is a weather station in Oregon, United States at 44.28 latitude and -121.55 longitude, 969 m (3,180 ft) above sea level.
The station reports from 1958 to 2024, 67 years of record.
1,464 records set at Sisters still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sisters set a daily record low maximum temperature of 8.9 C (48.0 F) on 8 May 2024.
About the Station
Location: Oregon, United States, 44.28 latitude, -121.55 longitude.
Elevation: 969 m (3,180 ft).
Period of record: 1958 to 2024, 67 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Sisters. 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 Sisters, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.3 C (64.9 F)
-33.3 C (-27.9 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-22.8 C (-9.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-12.8 C (9.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-11.7 C (10.9 F)
n/a
n/a
Jun
42.8 C (109.0 F)
-8.9 C (16.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
-4.4 C (24.1 F)
n/a
n/a
Aug
41.1 C (106.0 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-20.0 C (-4.0 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Dec
18.9 C (66.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sisters still stand. 1972 holds the most, with 41.
Standing records at Sisters by the year they were set
Year set
Standing records
1958
12
1959
31
1960
35
1961
15
1962
40
1963
34
1964
31
1965
29
1966
17
1967
25
1968
22
1969
31
1970
36
1971
32
1972
41
1973
29
1974
30
1975
30
1976
23
1977
40
1978
17
1979
12
1980
20
1981
13
1982
24
1983
16
1984
25
1985
38
1986
33
1987
18
1988
15
1989
28
1990
23
1991
16
1992
19
1993
34
1994
21
1995
29
1996
22
1997
17
1998
28
1999
16
2000
16
2001
19
2002
20
2003
30
2004
18
2005
10
2006
10
2007
17
2008
36
2009
18
2010
8
2011
15
2012
14
2013
17
2014
24
2015
33
2016
13
2017
14
2018
18
2019
23
2020
5
2021
13
2022
3
2024
3
All-Time Record Progression
5 new records
5 all-time records were set at Sisters between 4 February 1989 and 12 January 2017. Each dot is a new record.
When Sisters set new all-time records
Date
Kind
Detail
1989-02-04
Record low maximum temperature
Record low maximum temperature -18.9 C (-2.0 F)
1993-01-05
Record snow depth
Record snow depth 83.8 cm (33.0 in)
1993-02-20
Record snow depth
Record snow depth 86.4 cm (34.0 in)
2005-12-07
Record daily precipitation
Record daily precipitation 86.4 mm (3.4 in)
2017-01-12
Record snow depth
Record snow depth 88.9 cm (35.0 in)
Wettest Day of Each Month
Dec: 86.4 mm (3.4 in)
The wettest day on record for each calendar month at Sisters. The most was 86.4 mm (3.4 in) on 7 December 2005.
Record daily precipitation for each month at Sisters
Month
Record daily precipitation (mm)
Date
Jan
51.3 mm (2.0 in)
10 January 1989
Feb
57.7 mm (2.3 in)
18 February 1986
Mar
50.8 mm (2.0 in)
6 March 2019
Apr
38.6 mm (1.5 in)
28 April 1990
May
28.2 mm (1.1 in)
19 May 1981
Jun
33.5 mm (1.3 in)
12 June 1982
Jul
31.8 mm (1.3 in)
18 July 1987
Aug
30.5 mm (1.2 in)
31 August 2004
Sep
34.5 mm (1.4 in)
20 September 1982
Oct
76.2 mm (3.0 in)
19 October 1984
Nov
59.2 mm (2.3 in)
22 November 1961
Dec
86.4 mm (3.4 in)
7 December 2005
Period of Record Coverage
1958 to 2024
Complete yearUnder 90 percent of days
67 years of record at Sisters, 1958 to 2024. 15 years have data for under 90 percent of days and are left out of rankings: 1958, 1979, 1980, 1981, 1982, 1983, 1984, 1987 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Sisters, 1959 to 2018. Blue stripes are years cooler than the station's own mean of 7.7 C (45.8 F); red stripes are warmer. The coolest year was 1993, at 6.2 C (43.1 F), and the warmest was 2003, at 8.8 C (47.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Sisters as warming stripes, 1959 to 2018
Year
Annual mean temperature
Difference from the station mean
1959
7.4 C
-0.23 C
1960
7.2 C
-0.50 C
1961
8.0 C
+0.32 C
1962
7.4 C
-0.22 C
1963
7.7 C
+0.02 C
1964
6.7 C
-0.91 C
1965
7.5 C
-0.15 C
1966
7.9 C
+0.25 C
1967
8.3 C
+0.69 C
1968
7.8 C
+0.17 C
1970
7.6 C
-0.06 C
1971
7.5 C
-0.19 C
1973
7.8 C
+0.10 C
1974
7.7 C
+0.04 C
1975
6.9 C
-0.73 C
1976
7.5 C
-0.15 C
1977
7.9 C
+0.24 C
1978
7.0 C
-0.69 C
1986
7.9 C
+0.27 C
1989
7.2 C
-0.46 C
1990
8.0 C
+0.38 C
1991
7.9 C
+0.26 C
1993
6.2 C
-1.47 C
1994
8.0 C
+0.32 C
1995
7.8 C
+0.13 C
1996
7.9 C
+0.24 C
1997
8.0 C
+0.33 C
1998
8.5 C
+0.87 C
1999
8.0 C
+0.35 C
2000
6.5 C
-1.15 C
2001
7.6 C
-0.03 C
2002
7.7 C
+0.05 C
2003
8.8 C
+1.16 C
2005
7.6 C
-0.01 C
2007
8.0 C
+0.37 C
2008
7.4 C
-0.21 C
2009
7.5 C
-0.18 C
2011
7.3 C
-0.37 C
2012
8.0 C
+0.30 C
2014
8.3 C
+0.61 C
2016
8.0 C
+0.32 C
2017
7.4 C
-0.26 C
2018
8.0 C
+0.36 C
The fitted trend in annual mean temperature here over 1959 to 2018 is 0.05 C (-0.03 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.2) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sisters
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.05 C (-0.03 to 0.14) per decade
0.1 F (-0.1 to 0.2) per decade
1959 to 2018
43
Not clearly different from zero
Mean daily maximum
0.00 C (-0.10 to 0.09) per decade
0.00 F (-0.18 to 0.17) per decade
1959 to 2018
43
Not clearly different from zero
Mean daily minimum
0.11 C (0.01 to 0.22) per decade
0.20 F (0.01 to 0.39) per decade
1959 to 2018
43
Rise
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
1958 to 2024
Yearly extremes at Sisters: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1976
37.2 C (99.0 F)
67
Coldest night (TNn)
-33.3 C (-27.9 F)
1962
-22.8 C (-9.0 F)
67
Wettest day (Rx1day)
86.4 mm (3.4 in)
2005
29.2 mm (1.1 in)
67
Wettest five days (Rx5day)
216.7 mm (8.5 in)
1964
47.1 mm (1.9 in)
66
Longest dry spell (CDD)
123 days
2017
49 days
67
Hottest day (TXx)
The hottest day of the year at Sisters, 1958 to 2024. The record is 42.8 C (109.0 F) in 1976, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Sisters by year
Year
Hottest day (TXx)
1958
36.1 C (97.0 F)
1959
37.8 C (100.0 F)
1960
37.2 C (99.0 F)
1961
36.7 C (98.1 F)
1962
35.0 C (95.0 F)
1963
34.4 C (93.9 F)
1964
37.2 C (99.0 F)
1965
33.3 C (91.9 F)
1966
35.0 C (95.0 F)
1967
37.8 C (100.0 F)
1968
36.7 C (98.1 F)
1969
35.6 C (96.1 F)
1970
36.7 C (98.1 F)
1971
38.3 C (100.9 F)
1972
41.1 C (106.0 F)
1973
36.7 C (98.1 F)
1974
36.1 C (97.0 F)
1975
35.6 C (96.1 F)
1976
42.8 C (109.0 F)
1977
39.4 C (102.9 F)
1978
38.9 C (102.0 F)
1979
38.3 C (100.9 F)
1980
37.2 C (99.0 F)
1981
38.9 C (102.0 F)
1982
37.2 C (99.0 F)
1983
36.7 C (98.1 F)
1984
35.6 C (96.1 F)
1985
37.8 C (100.0 F)
1986
37.2 C (99.0 F)
1987
40.0 C (104.0 F)
1988
38.3 C (100.9 F)
1989
33.9 C (93.0 F)
1990
37.2 C (99.0 F)
1991
37.8 C (100.0 F)
1992
37.2 C (99.0 F)
1993
35.6 C (96.1 F)
1994
39.4 C (102.9 F)
1995
35.6 C (96.1 F)
1996
39.4 C (102.9 F)
1997
35.6 C (96.1 F)
1998
40.6 C (105.1 F)
1999
37.8 C (100.0 F)
2000
36.1 C (97.0 F)
2001
36.7 C (98.1 F)
2002
40.0 C (104.0 F)
2003
40.0 C (104.0 F)
2004
36.7 C (98.1 F)
2005
37.8 C (100.0 F)
2006
38.9 C (102.0 F)
2007
37.2 C (99.0 F)
2008
39.4 C (102.9 F)
2009
38.3 C (100.9 F)
2010
36.1 C (97.0 F)
2011
34.4 C (93.9 F)
2012
36.1 C (97.0 F)
2013
37.8 C (100.0 F)
2014
36.7 C (98.1 F)
2015
38.3 C (100.9 F)
2016
36.1 C (97.0 F)
2017
37.2 C (99.0 F)
2018
38.3 C (100.9 F)
2019
35.6 C (96.1 F)
2020
18.3 C (64.9 F)
2021
42.8 C (109.0 F)
2022
18.3 C (64.9 F)
2023
32.8 C (91.0 F)
2024
27.8 C (82.0 F)
Coldest night (TNn)
The coldest night of the year at Sisters, 1958 to 2024. The record is -33.3 C (-27.9 F) in 1962, marked on the chart; the median year is -22.8 C (-9.0 F).
Coldest night (TNn) at Sisters by year
Year
Coldest night (TNn)
1958
-15.6 C (3.9 F)
1959
-23.9 C (-11.0 F)
1960
-24.4 C (-11.9 F)
1961
-22.2 C (-8.0 F)
1962
-33.3 C (-27.9 F)
1963
-26.7 C (-16.1 F)
1964
-26.7 C (-16.1 F)
1965
-18.9 C (-2.0 F)
1966
-14.4 C (6.1 F)
1967
-21.1 C (-6.0 F)
1968
-24.4 C (-11.9 F)
1969
-20.6 C (-5.1 F)
1970
-22.8 C (-9.0 F)
1971
-20.6 C (-5.1 F)
1972
-33.3 C (-27.9 F)
1973
-23.9 C (-11.0 F)
1974
-30.0 C (-22.0 F)
1975
-18.9 C (-2.0 F)
1976
-23.9 C (-11.0 F)
1977
-25.0 C (-13.0 F)
1978
-21.7 C (-7.1 F)
1979
-27.2 C (-17.0 F)
1980
-28.9 C (-20.0 F)
1981
-15.6 C (3.9 F)
1982
-26.7 C (-16.1 F)
1983
-29.4 C (-20.9 F)
1984
-23.3 C (-9.9 F)
1985
-30.0 C (-22.0 F)
1986
-12.8 C (9.0 F)
1987
-20.6 C (-5.1 F)
1988
-23.3 C (-9.9 F)
1989
-30.0 C (-22.0 F)
1990
-33.3 C (-27.9 F)
1991
-17.2 C (1.0 F)
1992
-23.3 C (-9.9 F)
1993
-26.7 C (-16.1 F)
1994
-24.4 C (-11.9 F)
1995
-20.6 C (-5.1 F)
1996
-18.3 C (-0.9 F)
1997
-18.9 C (-2.0 F)
1998
-23.3 C (-9.9 F)
1999
-15.6 C (3.9 F)
2000
-18.3 C (-0.9 F)
2001
-16.7 C (1.9 F)
2002
-20.0 C (-4.0 F)
2003
-18.9 C (-2.0 F)
2004
-17.8 C (0.0 F)
2005
-21.1 C (-6.0 F)
2006
-20.0 C (-4.0 F)
2007
-22.2 C (-8.0 F)
2008
-25.0 C (-13.0 F)
2009
-27.2 C (-17.0 F)
2010
-22.8 C (-9.0 F)
2011
-26.1 C (-15.0 F)
2012
-13.9 C (7.0 F)
2013
-33.3 C (-27.9 F)
2014
-26.1 C (-15.0 F)
2015
-21.1 C (-6.0 F)
2016
-25.0 C (-13.0 F)
2017
-28.9 C (-20.0 F)
2018
-23.9 C (-11.0 F)
2019
-22.8 C (-9.0 F)
2020
-18.3 C (-0.9 F)
2021
-13.3 C (8.1 F)
2022
-12.8 C (9.0 F)
2023
4.4 C (39.9 F)
2024
-11.7 C (10.9 F)
Wettest day (Rx1day)
The wettest day of the year at Sisters, 1958 to 2024. The record is 86.4 mm (3.4 in) in 2005, marked on the chart; the median year is 29.2 mm (1.1 in).
Wettest day (Rx1day) at Sisters by year
Year
Wettest day (Rx1day)
1958
21.1 mm (0.8 in)
1959
14.7 mm (0.6 in)
1960
39.4 mm (1.6 in)
1961
59.2 mm (2.3 in)
1962
31.5 mm (1.2 in)
1963
35.6 mm (1.4 in)
1964
71.1 mm (2.8 in)
1965
27.9 mm (1.1 in)
1966
28.2 mm (1.1 in)
1967
20.8 mm (0.8 in)
1968
43.2 mm (1.7 in)
1969
29.2 mm (1.1 in)
1970
26.2 mm (1.0 in)
1971
36.6 mm (1.4 in)
1972
26.9 mm (1.1 in)
1973
30.2 mm (1.2 in)
1974
17.5 mm (0.7 in)
1975
21.8 mm (0.9 in)
1976
16.8 mm (0.7 in)
1977
27.9 mm (1.1 in)
1978
31.8 mm (1.3 in)
1979
31.8 mm (1.3 in)
1980
44.5 mm (1.8 in)
1981
33.5 mm (1.3 in)
1982
38.1 mm (1.5 in)
1983
23.9 mm (0.9 in)
1984
76.2 mm (3.0 in)
1985
14.0 mm (0.6 in)
1986
57.7 mm (2.3 in)
1987
42.9 mm (1.7 in)
1988
21.3 mm (0.8 in)
1989
51.3 mm (2.0 in)
1990
41.4 mm (1.6 in)
1991
18.3 mm (0.7 in)
1992
18.0 mm (0.7 in)
1993
18.5 mm (0.7 in)
1994
33.8 mm (1.3 in)
1995
35.8 mm (1.4 in)
1996
54.6 mm (2.1 in)
1997
17.5 mm (0.7 in)
1998
53.3 mm (2.1 in)
1999
17.8 mm (0.7 in)
2000
15.2 mm (0.6 in)
2001
19.1 mm (0.8 in)
2002
38.1 mm (1.5 in)
2003
37.1 mm (1.5 in)
2004
30.5 mm (1.2 in)
2005
86.4 mm (3.4 in)
2006
22.1 mm (0.9 in)
2007
46.5 mm (1.8 in)
2008
15.5 mm (0.6 in)
2009
44.5 mm (1.8 in)
2010
22.1 mm (0.9 in)
2011
32.0 mm (1.3 in)
2012
34.3 mm (1.4 in)
2013
26.7 mm (1.1 in)
2014
50.8 mm (2.0 in)
2015
22.9 mm (0.9 in)
2016
21.6 mm (0.9 in)
2017
19.1 mm (0.8 in)
2018
21.6 mm (0.9 in)
2019
50.8 mm (2.0 in)
2020
11.9 mm (0.5 in)
2021
23.6 mm (0.9 in)
2022
0.0 mm (0.00 in)
2023
0.3 mm (0.01 in)
2024
39.1 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sisters, 1958 to 2024. The record is 216.7 mm (8.5 in) in 1964, marked on the chart; the median year is 47.1 mm (1.9 in).
Wettest five days (Rx5day) at Sisters by year
Year
Wettest five days (Rx5day)
1958
35.7 mm (1.4 in)
1959
42.5 mm (1.7 in)
1960
84.1 mm (3.3 in)
1961
103.1 mm (4.1 in)
1962
45.7 mm (1.8 in)
1963
80.3 mm (3.2 in)
1964
216.7 mm (8.5 in)
1965
34.3 mm (1.4 in)
1966
78.4 mm (3.1 in)
1967
41.7 mm (1.6 in)
1968
48.8 mm (1.9 in)
1969
54.0 mm (2.1 in)
1970
52.6 mm (2.1 in)
1971
97.0 mm (3.8 in)
1972
64.0 mm (2.5 in)
1973
66.3 mm (2.6 in)
1974
46.8 mm (1.8 in)
1975
40.2 mm (1.6 in)
1976
35.7 mm (1.4 in)
1977
88.9 mm (3.5 in)
1978
33.6 mm (1.3 in)
1979
40.7 mm (1.6 in)
1980
89.7 mm (3.5 in)
1981
34.3 mm (1.4 in)
1982
51.3 mm (2.0 in)
1983
32.6 mm (1.3 in)
1984
100.1 mm (3.9 in)
1985
33.0 mm (1.3 in)
1986
65.3 mm (2.6 in)
1987
49.3 mm (1.9 in)
1988
47.3 mm (1.9 in)
1989
55.2 mm (2.2 in)
1990
74.4 mm (2.9 in)
1991
37.1 mm (1.5 in)
1992
34.9 mm (1.4 in)
1993
53.2 mm (2.1 in)
1994
48.5 mm (1.9 in)
1995
57.5 mm (2.3 in)
1996
95.3 mm (3.8 in)
1997
32.5 mm (1.3 in)
1998
53.3 mm (2.1 in)
1999
53.3 mm (2.1 in)
2000
38.6 mm (1.5 in)
2001
47.9 mm (1.9 in)
2002
38.1 mm (1.5 in)
2003
27.4 mm (1.1 in)
2004
30.5 mm (1.2 in)
2005
43.0 mm (1.7 in)
2006
38.6 mm (1.5 in)
2007
59.6 mm (2.3 in)
2008
28.1 mm (1.1 in)
2009
54.8 mm (2.2 in)
2010
34.8 mm (1.4 in)
2011
51.1 mm (2.0 in)
2012
51.1 mm (2.0 in)
2013
28.2 mm (1.1 in)
2014
53.3 mm (2.1 in)
2015
31.5 mm (1.2 in)
2016
33.0 mm (1.3 in)
2017
21.3 mm (0.8 in)
2018
12.2 mm (0.5 in)
2019
51.1 mm (2.0 in)
2020
18.1 mm (0.7 in)
2021
23.6 mm (0.9 in)
2022
0.0 mm (0.00 in)
2023
n/a
2024
0.0 mm (0.00 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sisters, 1958 to 2024. The record is 123 days in 2017, marked on the chart; the median year is 49 days.
Longest dry spell (CDD) at Sisters by year
Year
Longest dry spell (CDD)
1958
34 days
1959
36 days
1960
68 days
1961
76 days
1962
50 days
1963
36 days
1964
67 days
1965
33 days
1966
63 days
1967
80 days
1968
45 days
1969
38 days
1970
77 days
1971
42 days
1972
65 days
1973
34 days
1974
84 days
1975
44 days
1976
32 days
1977
69 days
1978
44 days
1979
52 days
1980
72 days
1981
76 days
1982
39 days
1983
51 days
1984
42 days
1985
53 days
1986
69 days
1987
61 days
1988
100 days
1989
76 days
1990
41 days
1991
64 days
1992
38 days
1993
32 days
1994
49 days
1995
41 days
1996
31 days
1997
33 days
1998
62 days
1999
56 days
2000
83 days
2001
23 days
2002
65 days
2003
44 days
2004
20 days
2005
52 days
2006
37 days
2007
42 days
2008
47 days
2009
111 days
2010
71 days
2011
36 days
2012
47 days
2013
42 days
2014
42 days
2015
49 days
2016
75 days
2017
123 days
2018
56 days
2019
57 days
2020
13 days
2021
55 days
2022
20 days
2023
4 days
2024
41 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
43 years with a frost
Across 43 years with a frost, the median last spring frost at Sisters falls on 25 June and the median first autumn frost on 7 July, which leaves a median of 16 days between them.
Fitted over all years, the growing season changes by +7.1 days per decade at this station.
Frost dates and growing season at Sisters
Measure
Median, all years
Earliest period
Recent period (1974 to 2018)
Recent against earliest
Fitted trend
Last spring frost
25 June
n/a
24 June
n/a
-1.3 days per decade
First autumn frost
7 July
n/a
8 July
n/a
+5.8 days per decade
Growing days
16 days
n/a
17 days
n/a
+7.1 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
42 years, 1959 to 2014
A day with at least 29.9 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 89.6 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Sisters: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
29.9 mm (1.2 in)
5 years
44.0 mm (1.7 in)
10 years
54.1 mm (2.1 in)
25 years
67.6 mm (2.7 in)
50 years
78.3 mm (3.1 in)
Longer than the 42 years of record
100 years
89.6 mm (3.5 in)
Longer than the 42 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, 42 years of values from 1959 to 2014.
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: 76.2 mm (3.0 in) in 1984; 71.1 mm (2.8 in) in 1964; 59.2 mm (2.3 in) in 1961.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Sisters standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sisters 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.