Record envelope, standing records and threshold days for Summit Grd STN (USC00358190), Oregon, United States, with 57 years of record.
Key Facts for Summit Grd STN
Summit Grd STN (USC00358190) is a weather station in Oregon, United States at 45.30 latitude and -121.75 longitude, 1,190 m (3,904 ft) above sea level.
The station reports from 1895 to 1951, 57 years of record.
1,464 records set at Summit Grd STN still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Summit Grd STN set a daily record precipitation of 22.4 mm (0.9 in) on 4 May 1951.
About the Station
Location: Oregon, United States, 45.30 latitude, -121.75 longitude.
Elevation: 1,190 m (3,904 ft).
Period of record: 1895 to 1951, 57 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 Summit Grd STN. 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 Summit Grd STN, 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)
-25.6 C (-14.1 F)
n/a
n/a
Feb
19.4 C (66.9 F)
-26.7 C (-16.1 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-17.2 C (1.0 F)
n/a
n/a
Apr
25.0 C (77.0 F)
-13.9 C (7.0 F)
n/a
n/a
May
28.3 C (82.9 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
33.3 C (91.9 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
36.1 C (97.0 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
35.0 C (95.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
32.2 C (90.0 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-19.4 C (-2.9 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Summit Grd STN still stand. 1897 holds the most, with 65.
Standing records at Summit Grd STN by the year they were set
Year set
Standing records
1895
47
1896
60
1897
65
1898
40
1899
57
1900
46
1901
39
1902
32
1903
38
1904
44
1905
34
1906
42
1907
31
1908
23
1909
38
1910
41
1911
31
1912
30
1913
6
1915
2
1916
42
1917
47
1918
53
1919
46
1920
35
1921
26
1922
40
1923
36
1924
25
1925
15
1926
26
1927
4
1928
10
1929
16
1930
21
1931
1
1932
18
1933
8
1934
18
1935
14
1936
8
1937
4
1938
7
1939
1
1940
9
1941
9
1942
28
1943
33
1944
35
1945
22
1946
15
1947
2
1948
7
1949
17
1950
13
1951
7
All-Time Record Progression
1 new records
1 all-time records were set at Summit Grd STN between 20 July 1946 and 20 July 1946. Each dot is a new record.
When Summit Grd STN set new all-time records
Date
Kind
Detail
1946-07-20
Record high maximum temperature
Record high maximum temperature 36.1 C (97.0 F)
Wettest Day of Each Month
Nov: 138.2 mm (5.4 in)
The wettest day on record for each calendar month at Summit Grd STN. The most was 138.2 mm (5.4 in) on 22 November 1909.
Record daily precipitation for each month at Summit Grd STN
Month
Record daily precipitation (mm)
Date
Jan
109.2 mm (4.3 in)
28 January 1927
Feb
104.1 mm (4.1 in)
2 February 1916
Mar
130.8 mm (5.1 in)
31 March 1931
Apr
74.7 mm (2.9 in)
13 April 1896
May
78.7 mm (3.1 in)
8 May 1948
Jun
48.0 mm (1.9 in)
12 June 1943
Jul
48.8 mm (1.9 in)
6 July 1909
Aug
45.0 mm (1.8 in)
8 August 1916
Sep
58.4 mm (2.3 in)
12 September 1920
Oct
99.8 mm (3.9 in)
16 October 1947
Nov
138.2 mm (5.4 in)
22 November 1909
Dec
122.4 mm (4.8 in)
21 December 1915
Period of Record Coverage
1895 to 1951
Complete yearUnder 90 percent of days
56 years of record at Summit Grd STN, 1895 to 1951. 30 years have data for under 90 percent of days and are left out of rankings: 1895, 1908, 1911, 1912, 1913, 1915, 1918, 1924 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 22 complete years at Summit Grd STN, 1896 to 1946. Blue stripes are years cooler than the station's own mean of 5.5 C (42.0 F); red stripes are warmer. The coolest year was 1921, at 4.4 C (39.9 F), and the warmest was 1901, at 6.7 C (44.0 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Summit Grd STN as warming stripes, 1896 to 1946
Year
Annual mean temperature
Difference from the station mean
1896
5.3 C
-0.21 C
1897
5.4 C
-0.12 C
1899
4.7 C
-0.88 C
1900
6.4 C
+0.85 C
1901
6.7 C
+1.12 C
1902
5.2 C
-0.37 C
1903
5.1 C
-0.46 C
1904
6.0 C
+0.48 C
1905
5.4 C
-0.13 C
1907
5.9 C
+0.38 C
1909
4.7 C
-0.87 C
1910
6.0 C
+0.49 C
1916
5.6 C
+0.07 C
1917
6.6 C
+1.09 C
1920
5.0 C
-0.54 C
1921
4.4 C
-1.18 C
1922
4.9 C
-0.68 C
1942
6.4 C
+0.86 C
1943
6.0 C
+0.47 C
1944
5.5 C
-0.03 C
1945
5.5 C
-0.04 C
1946
5.2 C
-0.32 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1895 to 1951
Yearly extremes at Summit Grd STN: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1946
29.7 C (85.5 F)
56
Coldest night (TNn)
-26.7 C (-16.1 F)
1899
-17.8 C (0.0 F)
56
Wettest day (Rx1day)
138.2 mm (5.4 in)
1909
75.1 mm (3.0 in)
56
Wettest five days (Rx5day)
375.4 mm (14.8 in)
1946
196.8 mm (7.7 in)
56
Longest dry spell (CDD)
62 days
1922
20 days
56
Hottest day (TXx)
The hottest day of the year at Summit Grd STN, 1895 to 1951. The record is 36.1 C (97.0 F) in 1946, marked on the chart; the median year is 29.7 C (85.5 F).
Hottest day (TXx) at Summit Grd STN by year
Year
Hottest day (TXx)
1895
32.2 C (90.0 F)
1896
34.4 C (93.9 F)
1897
35.0 C (95.0 F)
1898
35.0 C (95.0 F)
1899
32.2 C (90.0 F)
1900
29.4 C (84.9 F)
1901
32.8 C (91.0 F)
1902
30.6 C (87.1 F)
1903
28.9 C (84.0 F)
1904
32.2 C (90.0 F)
1905
32.8 C (91.0 F)
1906
32.8 C (91.0 F)
1907
30.0 C (86.0 F)
1908
29.4 C (84.9 F)
1909
30.6 C (87.1 F)
1910
30.0 C (86.0 F)
1911
32.8 C (91.0 F)
1912
31.1 C (88.0 F)
1913
18.9 C (66.0 F)
1915
19.4 C (66.9 F)
1916
33.3 C (91.9 F)
1917
33.9 C (93.0 F)
1918
33.9 C (93.0 F)
1919
31.7 C (89.1 F)
1920
30.6 C (87.1 F)
1921
26.7 C (80.1 F)
1922
33.3 C (91.9 F)
1923
29.4 C (84.9 F)
1924
19.4 C (66.9 F)
1925
19.4 C (66.9 F)
1926
21.1 C (70.0 F)
1927
15.6 C (60.1 F)
1928
20.6 C (69.1 F)
1929
32.2 C (90.0 F)
1930
26.7 C (80.1 F)
1931
18.3 C (64.9 F)
1932
18.3 C (64.9 F)
1933
17.8 C (64.0 F)
1934
21.7 C (71.1 F)
1935
16.7 C (62.1 F)
1936
15.6 C (60.1 F)
1937
12.8 C (55.0 F)
1938
12.2 C (54.0 F)
1939
18.3 C (64.9 F)
1940
21.1 C (70.0 F)
1941
30.0 C (86.0 F)
1942
33.9 C (93.0 F)
1943
31.7 C (89.1 F)
1944
32.2 C (90.0 F)
1945
32.2 C (90.0 F)
1946
36.1 C (97.0 F)
1947
18.3 C (64.9 F)
1948
21.1 C (70.0 F)
1949
25.0 C (77.0 F)
1950
22.2 C (72.0 F)
1951
20.0 C (68.0 F)
Coldest night (TNn)
The coldest night of the year at Summit Grd STN, 1895 to 1951. The record is -26.7 C (-16.1 F) in 1899, marked on the chart; the median year is -17.8 C (0.0 F).
Coldest night (TNn) at Summit Grd STN by year
Year
Coldest night (TNn)
1895
-13.9 C (7.0 F)
1896
-19.4 C (-2.9 F)
1897
-17.2 C (1.0 F)
1898
-16.7 C (1.9 F)
1899
-26.7 C (-16.1 F)
1900
-16.7 C (1.9 F)
1901
-13.9 C (7.0 F)
1902
-19.4 C (-2.9 F)
1903
-16.1 C (3.0 F)
1904
-16.7 C (1.9 F)
1905
-20.6 C (-5.1 F)
1906
-12.8 C (9.0 F)
1907
-20.0 C (-4.0 F)
1908
-12.8 C (9.0 F)
1909
-22.2 C (-8.0 F)
1910
-17.8 C (0.0 F)
1911
-16.7 C (1.9 F)
1912
-13.9 C (7.0 F)
1913
-12.2 C (10.0 F)
1915
-16.1 C (3.0 F)
1916
-18.9 C (-2.0 F)
1917
-18.9 C (-2.0 F)
1918
-16.1 C (3.0 F)
1919
-22.2 C (-8.0 F)
1920
-13.3 C (8.1 F)
1921
-17.8 C (0.0 F)
1922
-22.2 C (-8.0 F)
1923
-21.1 C (-6.0 F)
1924
-21.7 C (-7.1 F)
1925
-10.6 C (12.9 F)
1926
-17.2 C (1.0 F)
1927
-20.0 C (-4.0 F)
1928
-12.8 C (9.0 F)
1929
-19.4 C (-2.9 F)
1930
-20.0 C (-4.0 F)
1931
-11.1 C (12.0 F)
1932
-22.8 C (-9.0 F)
1933
-18.9 C (-2.0 F)
1934
-6.7 C (19.9 F)
1935
-20.0 C (-4.0 F)
1936
-18.9 C (-2.0 F)
1937
-23.9 C (-11.0 F)
1938
-12.8 C (9.0 F)
1939
-15.0 C (5.0 F)
1940
-12.2 C (10.0 F)
1941
-15.6 C (3.9 F)
1942
-18.9 C (-2.0 F)
1943
-25.6 C (-14.1 F)
1944
-19.4 C (-2.9 F)
1945
-13.9 C (7.0 F)
1946
-14.4 C (6.1 F)
1947
-14.4 C (6.1 F)
1948
-17.8 C (0.0 F)
1949
-20.0 C (-4.0 F)
1950
-22.8 C (-9.0 F)
1951
-19.4 C (-2.9 F)
Wettest day (Rx1day)
The wettest day of the year at Summit Grd STN, 1895 to 1951. The record is 138.2 mm (5.4 in) in 1909, marked on the chart; the median year is 75.1 mm (3.0 in).
Wettest day (Rx1day) at Summit Grd STN by year
Year
Wettest day (Rx1day)
1895
91.4 mm (3.6 in)
1896
100.1 mm (3.9 in)
1897
95.3 mm (3.8 in)
1898
72.9 mm (2.9 in)
1899
96.5 mm (3.8 in)
1900
71.1 mm (2.8 in)
1901
58.7 mm (2.3 in)
1902
61.0 mm (2.4 in)
1903
64.8 mm (2.6 in)
1904
64.0 mm (2.5 in)
1905
41.9 mm (1.6 in)
1906
99.6 mm (3.9 in)
1907
79.2 mm (3.1 in)
1908
118.1 mm (4.6 in)
1909
138.2 mm (5.4 in)
1910
75.7 mm (3.0 in)
1911
57.2 mm (2.3 in)
1912
101.6 mm (4.0 in)
1913
53.3 mm (2.1 in)
1915
122.4 mm (4.8 in)
1916
104.1 mm (4.1 in)
1917
100.6 mm (4.0 in)
1918
69.3 mm (2.7 in)
1919
67.8 mm (2.7 in)
1920
58.4 mm (2.3 in)
1921
126.0 mm (5.0 in)
1922
55.1 mm (2.2 in)
1923
104.1 mm (4.1 in)
1924
109.7 mm (4.3 in)
1925
51.6 mm (2.0 in)
1926
58.7 mm (2.3 in)
1927
109.2 mm (4.3 in)
1928
73.7 mm (2.9 in)
1929
49.0 mm (1.9 in)
1930
72.6 mm (2.9 in)
1931
130.8 mm (5.1 in)
1932
77.2 mm (3.0 in)
1933
105.4 mm (4.1 in)
1934
66.0 mm (2.6 in)
1935
66.0 mm (2.6 in)
1936
55.9 mm (2.2 in)
1937
77.5 mm (3.1 in)
1938
88.1 mm (3.5 in)
1939
50.8 mm (2.0 in)
1940
61.0 mm (2.4 in)
1941
73.7 mm (2.9 in)
1942
95.8 mm (3.8 in)
1943
78.5 mm (3.1 in)
1944
46.7 mm (1.8 in)
1945
101.6 mm (4.0 in)
1946
102.4 mm (4.0 in)
1947
99.8 mm (3.9 in)
1948
105.4 mm (4.1 in)
1949
63.8 mm (2.5 in)
1950
53.6 mm (2.1 in)
1951
74.4 mm (2.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Summit Grd STN, 1895 to 1951. The record is 375.4 mm (14.8 in) in 1946, marked on the chart; the median year is 196.8 mm (7.7 in).
Wettest five days (Rx5day) at Summit Grd STN by year
Year
Wettest five days (Rx5day)
1895
192.6 mm (7.6 in)
1896
239.0 mm (9.4 in)
1897
277.7 mm (10.9 in)
1898
186.1 mm (7.3 in)
1899
248.3 mm (9.8 in)
1900
147.9 mm (5.8 in)
1901
175.8 mm (6.9 in)
1902
196.7 mm (7.7 in)
1903
162.1 mm (6.4 in)
1904
143.5 mm (5.6 in)
1905
136.0 mm (5.4 in)
1906
295.7 mm (11.6 in)
1907
179.6 mm (7.1 in)
1908
227.7 mm (9.0 in)
1909
283.0 mm (11.1 in)
1910
197.9 mm (7.8 in)
1911
120.7 mm (4.8 in)
1912
228.6 mm (9.0 in)
1913
196.8 mm (7.7 in)
1915
204.5 mm (8.1 in)
1916
216.4 mm (8.5 in)
1917
286.5 mm (11.3 in)
1918
206.2 mm (8.1 in)
1919
245.1 mm (9.6 in)
1920
142.8 mm (5.6 in)
1921
329.9 mm (13.0 in)
1922
132.6 mm (5.2 in)
1923
272.7 mm (10.7 in)
1924
247.3 mm (9.7 in)
1925
185.0 mm (7.3 in)
1926
103.4 mm (4.1 in)
1927
213.5 mm (8.4 in)
1928
194.0 mm (7.6 in)
1929
145.3 mm (5.7 in)
1930
173.9 mm (6.8 in)
1931
224.7 mm (8.8 in)
1932
193.6 mm (7.6 in)
1933
209.1 mm (8.2 in)
1934
177.6 mm (7.0 in)
1935
127.7 mm (5.0 in)
1936
179.1 mm (7.1 in)
1937
210.1 mm (8.3 in)
1938
190.2 mm (7.5 in)
1939
136.6 mm (5.4 in)
1940
167.7 mm (6.6 in)
1941
129.7 mm (5.1 in)
1942
230.2 mm (9.1 in)
1943
201.0 mm (7.9 in)
1944
95.2 mm (3.7 in)
1945
199.9 mm (7.9 in)
1946
375.4 mm (14.8 in)
1947
229.3 mm (9.0 in)
1948
203.5 mm (8.0 in)
1949
199.2 mm (7.8 in)
1950
116.8 mm (4.6 in)
1951
168.1 mm (6.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Summit Grd STN, 1895 to 1951. The record is 62 days in 1922, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Summit Grd STN by year
Year
Longest dry spell (CDD)
1895
53 days
1896
35 days
1897
43 days
1898
23 days
1899
17 days
1900
30 days
1901
34 days
1902
32 days
1903
29 days
1904
30 days
1905
16 days
1906
52 days
1907
26 days
1908
22 days
1909
18 days
1910
58 days
1911
18 days
1912
16 days
1913
10 days
1915
32 days
1916
32 days
1917
41 days
1918
51 days
1919
50 days
1920
36 days
1921
43 days
1922
62 days
1923
38 days
1924
6 days
1925
8 days
1926
10 days
1927
7 days
1928
12 days
1929
19 days
1930
10 days
1931
18 days
1932
8 days
1933
12 days
1934
12 days
1935
18 days
1936
14 days
1937
6 days
1938
9 days
1939
16 days
1940
8 days
1941
12 days
1942
21 days
1943
26 days
1944
20 days
1945
33 days
1946
27 days
1947
7 days
1948
17 days
1949
19 days
1950
8 days
1951
27 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
22 years with a frost
Across 22 years with a frost, the median last spring frost at Summit Grd STN falls on 16 June and the median first autumn frost on 11 August, which leaves a median of 57 days between them.
Frost dates and growing season at Summit Grd STN
Measure
Median, all years
Earliest period
Recent period (1896 to 1946)
Recent against earliest
Fitted trend
Last spring frost
16 June
n/a
16 June
n/a
n/a
First autumn frost
11 August
n/a
11 August
n/a
n/a
Growing days
57 days
n/a
57 days
n/a
n/a
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 Summit Grd STN standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Summit Grd STN 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.