Record envelope, standing records and threshold days for Belknap Springs 8 N (USC00350652), Oregon, United States, with 67 years of record.
Key Facts for Belknap Springs 8 N
Belknap Springs 8 N (USC00350652) is a weather station in Oregon, United States at 44.29 latitude and -122.04 longitude, 656 m (2,152 ft) above sea level.
The station reports from 1960 to 2026, 67 years of record.
1,464 records set at Belknap Springs 8 N still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Belknap Springs 8 N set a daily record high maximum temperature of 36.7 C (98.1 F) on 6 August 2026.
About the Station
Location: Oregon, United States, 44.29 latitude, -122.04 longitude.
Elevation: 656 m (2,152 ft).
Period of record: 1960 to 2026, 67 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
5 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 Belknap Springs 8 N. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Belknap Springs 8 N, 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)
-15.6 C (3.9 F)
10.0 C (50.0 F)
-6.7 C (19.9 F)
Feb
22.2 C (72.0 F)
-15.6 C (3.9 F)
15.6 C (60.1 F)
-5.0 C (23.0 F)
Mar
28.9 C (84.0 F)
-14.4 C (6.1 F)
23.9 C (75.0 F)
-2.8 C (27.0 F)
Apr
33.9 C (93.0 F)
-7.8 C (18.0 F)
25.6 C (78.1 F)
-2.8 C (27.0 F)
May
37.8 C (100.0 F)
-3.3 C (26.1 F)
30.0 C (86.0 F)
1.1 C (34.0 F)
Jun
41.7 C (107.1 F)
-0.6 C (30.9 F)
33.9 C (93.0 F)
1.1 C (34.0 F)
Jul
41.7 C (107.1 F)
1.1 C (34.0 F)
36.1 C (97.0 F)
5.0 C (41.0 F)
Aug
41.1 C (106.0 F)
-0.6 C (30.9 F)
36.7 C (98.1 F)
3.9 C (39.0 F)
Sep
40.6 C (105.1 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-13.3 C (8.1 F)
n/a
n/a
Dec
14.4 C (57.9 F)
-17.2 C (1.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Belknap Springs 8 N still stand. 1971 holds the most, with 47.
Standing records at Belknap Springs 8 N by the year they were set
Year set
Standing records
1961
31
1962
35
1963
26
1964
13
1965
21
1966
17
1967
16
1968
11
1969
27
1970
35
1971
47
1972
40
1973
18
1974
30
1975
23
1976
23
1977
31
1978
35
1979
18
1980
31
1981
24
1982
13
1983
24
1984
17
1985
37
1986
30
1987
23
1988
26
1989
21
1990
28
1991
27
1992
28
1993
30
1994
19
1995
17
1996
30
1997
9
1998
17
1999
13
2000
5
2001
5
2002
18
2003
13
2004
9
2005
6
2006
22
2007
15
2008
27
2009
14
2010
17
2011
22
2012
21
2013
20
2014
26
2015
33
2016
25
2017
34
2018
18
2019
22
2020
8
2021
27
2022
31
2023
22
2024
19
2025
16
2026
8
All-Time Record Progression
9 new records
9 all-time records were set at Belknap Springs 8 N between 20 July 1995 and 31 July 2022. Each dot is a new record.
When Belknap Springs 8 N set new all-time records
Date
Kind
Detail
1995-07-20
Record high minimum temperature
Record high minimum temperature 16.7 C (62.1 F)
1996-11-19
Record daily precipitation
Record daily precipitation 138.2 mm (5.4 in)
1999-11-26
Record daily precipitation
Record daily precipitation 148.1 mm (5.8 in)
2002-01-22
Record daily snowfall
Record daily snowfall 61.0 cm (24.0 in)
2006-07-23
Record high minimum temperature
Record high minimum temperature 17.8 C (64.0 F)
2007-02-28
Record daily precipitation
Record daily precipitation 165.1 mm (6.5 in)
2008-08-16
Record high minimum temperature
Record high minimum temperature 19.4 C (66.9 F)
2021-06-29
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
2022-07-31
Record high minimum temperature
Record high minimum temperature 20.6 C (69.1 F)
Wettest Day of Each Month
Feb: 165.1 mm (6.5 in)
The wettest day on record for each calendar month at Belknap Springs 8 N. The most was 165.1 mm (6.5 in) on 28 February 2007.
Record daily precipitation for each month at Belknap Springs 8 N
Month
Record daily precipitation (mm)
Date
Jan
132.6 mm (5.2 in)
22 January 2002
Feb
165.1 mm (6.5 in)
28 February 2007
Mar
116.8 mm (4.6 in)
17 March 2025
Apr
87.6 mm (3.4 in)
28 April 1990
May
66.0 mm (2.6 in)
4 May 2009
Jun
71.1 mm (2.8 in)
8 June 1981
Jul
37.6 mm (1.5 in)
18 July 1987
Aug
51.3 mm (2.0 in)
7 August 2003
Sep
85.1 mm (3.4 in)
30 September 2013
Oct
116.8 mm (4.6 in)
17 October 2016
Nov
148.1 mm (5.8 in)
26 November 1999
Dec
145.0 mm (5.7 in)
19 December 2025
Period of Record Coverage
1960 to 2026
Complete yearUnder 90 percent of days
67 years of record at Belknap Springs 8 N, 1960 to 2026. 11 years have data for under 90 percent of days and are left out of rankings: 1960, 1963, 1964, 2001, 2002, 2003, 2004, 2006 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 49 complete years at Belknap Springs 8 N, 1961 to 2025. Blue stripes are years cooler than the station's own mean of 9.1 C (48.3 F); red stripes are warmer. The coolest year was 1971, at 7.5 C (45.6 F), and the warmest was 1992, at 10.8 C (51.4 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Belknap Springs 8 N as warming stripes, 1961 to 2025
Year
Annual mean temperature
Difference from the station mean
1961
9.6 C
+0.55 C
1962
9.0 C
-0.08 C
1965
8.9 C
-0.12 C
1966
8.7 C
-0.34 C
1967
9.2 C
+0.18 C
1969
8.5 C
-0.60 C
1970
8.7 C
-0.40 C
1971
7.5 C
-1.53 C
1973
8.7 C
-0.35 C
1974
9.0 C
-0.07 C
1975
8.3 C
-0.77 C
1976
8.8 C
-0.24 C
1978
9.0 C
-0.10 C
1979
9.2 C
+0.13 C
1980
9.1 C
+0.02 C
1981
9.5 C
+0.40 C
1982
8.4 C
-0.68 C
1983
9.4 C
+0.36 C
1984
8.7 C
-0.37 C
1985
8.3 C
-0.72 C
1988
9.6 C
+0.56 C
1989
8.8 C
-0.26 C
1990
9.3 C
+0.21 C
1991
9.6 C
+0.55 C
1992
10.8 C
+1.70 C
1993
8.4 C
-0.70 C
1994
9.4 C
+0.29 C
1995
9.8 C
+0.75 C
1996
9.0 C
-0.03 C
1997
9.3 C
+0.28 C
1998
9.6 C
+0.52 C
1999
8.8 C
-0.23 C
2000
9.1 C
+0.00 C
2005
9.2 C
+0.16 C
2008
8.3 C
-0.80 C
2009
8.7 C
-0.35 C
2010
8.8 C
-0.22 C
2011
7.9 C
-1.14 C
2013
8.5 C
-0.52 C
2014
9.9 C
+0.83 C
2015
10.6 C
+1.53 C
2016
9.3 C
+0.27 C
2017
8.5 C
-0.56 C
2018
9.5 C
+0.41 C
2019
8.6 C
-0.44 C
2021
9.7 C
+0.65 C
2022
9.2 C
+0.13 C
2024
9.3 C
+0.26 C
2025
9.9 C
+0.81 C
The fitted trend in annual mean temperature here over 1961 to 2025 is 0.08 C (-0.02 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.14 F (-0.03 to 0.31) 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 Belknap Springs 8 N
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.08 C (-0.02 to 0.17) per decade
0.14 F (-0.03 to 0.31) per decade
1961 to 2025
49
Not clearly different from zero
Mean daily maximum
0.00 C (-0.13 to 0.12) per decade
-0.01 F (-0.23 to 0.21) per decade
1961 to 2025
49
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1961 to 2025
49
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
1960 to 2026
Yearly extremes at Belknap Springs 8 N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
2021
37.8 C (100.0 F)
67
Coldest night (TNn)
-17.2 C (1.0 F)
1983
-11.1 C (12.0 F)
67
Wettest day (Rx1day)
165.1 mm (6.5 in)
2007
83.1 mm (3.3 in)
67
Wettest five days (Rx5day)
453.6 mm (17.9 in)
1964
188.0 mm (7.4 in)
67
Longest dry spell (CDD)
88 days
2018
39 days
67
Hottest day (TXx)
The hottest day of the year at Belknap Springs 8 N, 1960 to 2026. The record is 41.7 C (107.1 F) in 2021, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Belknap Springs 8 N by year
Year
Hottest day (TXx)
1960
31.7 C (89.1 F)
1961
41.1 C (106.0 F)
1962
35.6 C (96.1 F)
1963
37.8 C (100.0 F)
1964
37.2 C (99.0 F)
1965
36.7 C (98.1 F)
1966
34.4 C (93.9 F)
1967
37.8 C (100.0 F)
1968
34.4 C (93.9 F)
1969
35.0 C (95.0 F)
1970
37.8 C (100.0 F)
1971
38.9 C (102.0 F)
1972
41.1 C (106.0 F)
1973
35.6 C (96.1 F)
1974
36.7 C (98.1 F)
1975
38.9 C (102.0 F)
1976
34.4 C (93.9 F)
1977
40.0 C (104.0 F)
1978
37.8 C (100.0 F)
1979
38.3 C (100.9 F)
1980
38.3 C (100.9 F)
1981
39.4 C (102.9 F)
1982
35.0 C (95.0 F)
1983
37.8 C (100.0 F)
1984
38.3 C (100.9 F)
1985
38.9 C (102.0 F)
1986
37.8 C (100.0 F)
1987
37.2 C (99.0 F)
1988
40.6 C (105.1 F)
1989
33.9 C (93.0 F)
1990
38.9 C (102.0 F)
1991
37.2 C (99.0 F)
1992
38.3 C (100.9 F)
1993
36.1 C (97.0 F)
1994
39.4 C (102.9 F)
1995
35.6 C (96.1 F)
1996
38.9 C (102.0 F)
1997
35.0 C (95.0 F)
1998
40.0 C (104.0 F)
1999
36.1 C (97.0 F)
2000
35.0 C (95.0 F)
2001
37.2 C (99.0 F)
2002
39.4 C (102.9 F)
2003
39.4 C (102.9 F)
2004
37.8 C (100.0 F)
2005
38.9 C (102.0 F)
2006
40.6 C (105.1 F)
2007
36.7 C (98.1 F)
2008
40.6 C (105.1 F)
2009
38.3 C (100.9 F)
2010
36.7 C (98.1 F)
2011
34.4 C (93.9 F)
2012
38.3 C (100.9 F)
2013
35.0 C (95.0 F)
2014
36.7 C (98.1 F)
2015
39.4 C (102.9 F)
2016
36.7 C (98.1 F)
2017
38.9 C (102.0 F)
2018
36.7 C (98.1 F)
2019
36.1 C (97.0 F)
2020
37.8 C (100.0 F)
2021
41.7 C (107.1 F)
2022
41.7 C (107.1 F)
2023
37.8 C (100.0 F)
2024
40.6 C (105.1 F)
2025
37.2 C (99.0 F)
2026
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at Belknap Springs 8 N, 1960 to 2026. The record is -17.2 C (1.0 F) in 1983, marked on the chart; the median year is -11.1 C (12.0 F).
Coldest night (TNn) at Belknap Springs 8 N by year
Year
Coldest night (TNn)
1960
-5.6 C (21.9 F)
1961
-11.7 C (10.9 F)
1962
-15.0 C (5.0 F)
1963
-14.4 C (6.1 F)
1964
-15.0 C (5.0 F)
1965
-8.9 C (16.0 F)
1966
-9.4 C (15.1 F)
1967
-8.3 C (17.1 F)
1968
-13.3 C (8.1 F)
1969
-15.0 C (5.0 F)
1970
-11.1 C (12.0 F)
1971
-14.4 C (6.1 F)
1972
-13.9 C (7.0 F)
1973
-12.2 C (10.0 F)
1974
-14.4 C (6.1 F)
1975
-10.6 C (12.9 F)
1976
-9.4 C (15.1 F)
1977
-11.1 C (12.0 F)
1978
-15.0 C (5.0 F)
1979
-15.6 C (3.9 F)
1980
-14.4 C (6.1 F)
1981
-5.0 C (23.0 F)
1982
-12.2 C (10.0 F)
1983
-17.2 C (1.0 F)
1984
-11.7 C (10.9 F)
1985
-15.6 C (3.9 F)
1986
-4.4 C (24.1 F)
1987
-11.1 C (12.0 F)
1988
-10.6 C (12.9 F)
1989
-14.4 C (6.1 F)
1990
-16.1 C (3.0 F)
1991
-9.4 C (15.1 F)
1992
-7.8 C (18.0 F)
1993
-13.3 C (8.1 F)
1994
-8.9 C (16.0 F)
1995
-8.3 C (17.1 F)
1996
-13.3 C (8.1 F)
1997
-8.3 C (17.1 F)
1998
-16.1 C (3.0 F)
1999
-6.7 C (19.9 F)
2000
-6.1 C (21.0 F)
2001
-6.1 C (21.0 F)
2002
-11.1 C (12.0 F)
2003
-8.3 C (17.1 F)
2004
-8.3 C (17.1 F)
2005
-8.3 C (17.1 F)
2006
-12.2 C (10.0 F)
2007
-10.6 C (12.9 F)
2008
-12.8 C (9.0 F)
2009
-15.0 C (5.0 F)
2010
-11.1 C (12.0 F)
2011
-10.0 C (14.0 F)
2012
-8.3 C (17.1 F)
2013
-13.3 C (8.1 F)
2014
-10.6 C (12.9 F)
2015
-9.4 C (15.1 F)
2016
-11.1 C (12.0 F)
2017
-15.6 C (3.9 F)
2018
-12.8 C (9.0 F)
2019
-10.0 C (14.0 F)
2020
-6.1 C (21.0 F)
2021
-5.6 C (21.9 F)
2022
-11.1 C (12.0 F)
2023
-10.0 C (14.0 F)
2024
-11.1 C (12.0 F)
2025
-11.7 C (10.9 F)
2026
-6.7 C (19.9 F)
Wettest day (Rx1day)
The wettest day of the year at Belknap Springs 8 N, 1960 to 2026. The record is 165.1 mm (6.5 in) in 2007, marked on the chart; the median year is 83.1 mm (3.3 in).
Wettest day (Rx1day) at Belknap Springs 8 N by year
Year
Wettest day (Rx1day)
1960
35.8 mm (1.4 in)
1961
109.7 mm (4.3 in)
1962
56.1 mm (2.2 in)
1963
108.0 mm (4.3 in)
1964
135.1 mm (5.3 in)
1965
91.2 mm (3.6 in)
1966
55.9 mm (2.2 in)
1967
63.5 mm (2.5 in)
1968
75.4 mm (3.0 in)
1969
70.4 mm (2.8 in)
1970
86.6 mm (3.4 in)
1971
86.6 mm (3.4 in)
1972
112.5 mm (4.4 in)
1973
53.6 mm (2.1 in)
1974
124.5 mm (4.9 in)
1975
81.0 mm (3.2 in)
1976
100.1 mm (3.9 in)
1977
83.1 mm (3.3 in)
1978
53.1 mm (2.1 in)
1979
72.1 mm (2.8 in)
1980
106.7 mm (4.2 in)
1981
122.7 mm (4.8 in)
1982
100.6 mm (4.0 in)
1983
81.5 mm (3.2 in)
1984
118.9 mm (4.7 in)
1985
69.3 mm (2.7 in)
1986
96.0 mm (3.8 in)
1987
79.8 mm (3.1 in)
1988
93.7 mm (3.7 in)
1989
88.9 mm (3.5 in)
1990
91.4 mm (3.6 in)
1991
65.0 mm (2.6 in)
1992
77.2 mm (3.0 in)
1993
50.8 mm (2.0 in)
1994
76.7 mm (3.0 in)
1995
74.2 mm (2.9 in)
1996
138.2 mm (5.4 in)
1997
80.3 mm (3.2 in)
1998
134.1 mm (5.3 in)
1999
148.1 mm (5.8 in)
2000
70.1 mm (2.8 in)
2001
142.2 mm (5.6 in)
2002
132.6 mm (5.2 in)
2003
106.7 mm (4.2 in)
2004
68.6 mm (2.7 in)
2005
96.5 mm (3.8 in)
2006
94.0 mm (3.7 in)
2007
165.1 mm (6.5 in)
2008
71.1 mm (2.8 in)
2009
73.7 mm (2.9 in)
2010
53.3 mm (2.1 in)
2011
83.8 mm (3.3 in)
2012
80.0 mm (3.1 in)
2013
85.1 mm (3.4 in)
2014
115.1 mm (4.5 in)
2015
79.0 mm (3.1 in)
2016
116.8 mm (4.6 in)
2017
84.6 mm (3.3 in)
2018
50.5 mm (2.0 in)
2019
82.6 mm (3.3 in)
2020
68.6 mm (2.7 in)
2021
70.1 mm (2.8 in)
2022
99.1 mm (3.9 in)
2023
71.1 mm (2.8 in)
2024
76.2 mm (3.0 in)
2025
145.0 mm (5.7 in)
2026
50.8 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Belknap Springs 8 N, 1960 to 2026. The record is 453.6 mm (17.9 in) in 1964, marked on the chart; the median year is 188.0 mm (7.4 in).
Wettest five days (Rx5day) at Belknap Springs 8 N by year
Year
Wettest five days (Rx5day)
1960
86.1 mm (3.4 in)
1961
234.7 mm (9.2 in)
1962
154.6 mm (6.1 in)
1963
207.5 mm (8.2 in)
1964
453.6 mm (17.9 in)
1965
187.5 mm (7.4 in)
1966
215.4 mm (8.5 in)
1967
149.2 mm (5.9 in)
1968
179.1 mm (7.1 in)
1969
161.3 mm (6.4 in)
1970
199.1 mm (7.8 in)
1971
264.1 mm (10.4 in)
1972
269.8 mm (10.6 in)
1973
158.2 mm (6.2 in)
1974
251.2 mm (9.9 in)
1975
175.7 mm (6.9 in)
1976
235.5 mm (9.3 in)
1977
295.5 mm (11.6 in)
1978
137.5 mm (5.4 in)
1979
135.2 mm (5.3 in)
1980
256.5 mm (10.1 in)
1981
206.3 mm (8.1 in)
1982
215.7 mm (8.5 in)
1983
176.5 mm (6.9 in)
1984
204.7 mm (8.1 in)
1985
143.2 mm (5.6 in)
1986
234.4 mm (9.2 in)
1987
156.0 mm (6.1 in)
1988
200.3 mm (7.9 in)
1989
152.4 mm (6.0 in)
1990
215.4 mm (8.5 in)
1991
171.7 mm (6.8 in)
1992
161.6 mm (6.4 in)
1993
167.0 mm (6.6 in)
1994
151.5 mm (6.0 in)
1995
180.5 mm (7.1 in)
1996
294.6 mm (11.6 in)
1997
165.6 mm (6.5 in)
1998
280.8 mm (11.1 in)
1999
312.9 mm (12.3 in)
2000
209.1 mm (8.2 in)
2001
220.4 mm (8.7 in)
2002
117.4 mm (4.6 in)
2003
166.7 mm (6.6 in)
2004
200.6 mm (7.9 in)
2005
267.1 mm (10.5 in)
2006
262.7 mm (10.3 in)
2007
272.8 mm (10.7 in)
2008
188.0 mm (7.4 in)
2009
166.9 mm (6.6 in)
2010
155.2 mm (6.1 in)
2011
239.2 mm (9.4 in)
2012
236.7 mm (9.3 in)
2013
184.2 mm (7.3 in)
2014
239.0 mm (9.4 in)
2015
187.2 mm (7.4 in)
2016
214.6 mm (8.4 in)
2017
162.9 mm (6.4 in)
2018
128.4 mm (5.1 in)
2019
214.1 mm (8.4 in)
2020
143.5 mm (5.6 in)
2021
128.8 mm (5.1 in)
2022
188.0 mm (7.4 in)
2023
195.6 mm (7.7 in)
2024
185.4 mm (7.3 in)
2025
222.5 mm (8.8 in)
2026
90.5 mm (3.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Belknap Springs 8 N, 1960 to 2026. The record is 88 days in 2018, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Belknap Springs 8 N by year
Year
Longest dry spell (CDD)
1960
15 days
1961
29 days
1962
37 days
1963
50 days
1964
23 days
1965
25 days
1966
41 days
1967
48 days
1968
18 days
1969
69 days
1970
65 days
1971
42 days
1972
51 days
1973
34 days
1974
39 days
1975
33 days
1976
26 days
1977
19 days
1978
40 days
1979
36 days
1980
38 days
1981
55 days
1982
33 days
1983
20 days
1984
62 days
1985
52 days
1986
42 days
1987
52 days
1988
33 days
1989
18 days
1990
42 days
1991
48 days
1992
42 days
1993
46 days
1994
28 days
1995
26 days
1996
23 days
1997
40 days
1998
83 days
1999
35 days
2000
31 days
2001
22 days
2002
63 days
2003
44 days
2004
31 days
2005
28 days
2006
37 days
2007
28 days
2008
30 days
2009
25 days
2010
46 days
2011
35 days
2012
42 days
2013
44 days
2014
21 days
2015
49 days
2016
52 days
2017
83 days
2018
88 days
2019
24 days
2020
85 days
2021
43 days
2022
37 days
2023
59 days
2024
20 days
2025
45 days
2026
39 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 Belknap Springs 8 N falls on 12 May and the median first autumn frost on 9 October, which leaves a median of 151 days between them.
Fitted over all years, the growing season changes by +2.4 days per decade at this station.
Frost dates and growing season at Belknap Springs 8 N
Measure
Median, all years
Earliest period
Recent period (1985 to 2025)
Recent against earliest
Fitted trend
Last spring frost
12 May
n/a
10 May
n/a
-1.3 days per decade
First autumn frost
9 October
n/a
9 October
n/a
+1.1 days per decade
Growing days
151 days
n/a
155 days
n/a
+2.4 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
55 years, 1961 to 2025
A day with at least 83.1 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 164.6 mm (6.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Belknap Springs 8 N: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
83.1 mm (3.3 in)
5 years
105.2 mm (4.1 in)
10 years
119.7 mm (4.7 in)
25 years
138.0 mm (5.4 in)
50 years
151.4 mm (6.0 in)
100 years
164.6 mm (6.5 in)
Longer than the 55 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, 55 years of values from 1961 to 2025.
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: 148.1 mm (5.8 in) in 1999; 145.0 mm (5.7 in) in 2025; 138.2 mm (5.4 in) in 1996.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Belknap Springs 8 N, at 2009. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 2009 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Belknap Springs 8 N, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
2009
-0.2
-0.4
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2008 to 2025 against 1961 to 1990
Over 2008 to 2025, Belknap Springs 8 N had a mean temperature of 9.1 C (48.4 F) and 1,715.3 mm (67.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Lake Spaulding (United States, 564 km away), Postojna (Slovenia, 9,112 km away) and Bowman Dam (United States, 549 km away).
Climate twins of Belknap Springs 8 N: stations whose 1961 to 1990 climate is closest to its 2008 to 2025 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Belknap Springs 8 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Belknap Springs 8 N 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.