Record envelope, standing records and threshold days for Castleford 2 N (USC00101551), Idaho, United States, with 59 years of record.
Key Facts for Castleford 2 N
Castleford 2 N (USC00101551) is a weather station in Idaho, United States at 42.55 latitude and -114.87 longitude, 1,166 m (3,825 ft) above sea level.
The station reports from 1963 to 2021, 59 years of record.
1,464 records set at Castleford 2 N still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Castleford 2 N tied a daily record low maximum temperature of 7.2 C (45.0 F) on 16 April 2021.
About the Station
Location: Idaho, United States, 42.55 latitude, -114.87 longitude.
Elevation: 1,166 m (3,825 ft).
Period of record: 1963 to 2021, 59 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 Castleford 2 N. 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 Castleford 2 N, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.2 C (63.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Mar
26.7 C (80.1 F)
-17.8 C (0.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-11.1 C (12.0 F)
n/a
n/a
May
37.8 C (100.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
39.4 C (102.9 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
1.1 C (34.0 F)
n/a
n/a
Aug
38.9 C (102.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-15.6 C (3.9 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-23.3 C (-9.9 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Castleford 2 N still stand. 1996 holds the most, with 69.
Standing records at Castleford 2 N by the year they were set
Year set
Standing records
1963
13
1964
39
1965
30
1966
34
1967
26
1968
32
1969
42
1970
24
1971
37
1972
31
1973
22
1974
33
1975
35
1976
22
1977
35
1978
30
1979
27
1980
27
1981
19
1982
23
1983
22
1984
39
1985
65
1986
28
1987
20
1988
26
1989
25
1990
41
1991
15
1992
25
1993
33
1994
18
1995
34
1996
69
1997
18
1998
23
1999
17
2000
22
2001
22
2002
20
2003
29
2004
9
2005
19
2006
17
2007
22
2008
17
2009
15
2010
14
2011
15
2012
22
2013
8
2015
30
2016
13
2017
19
2018
19
2019
17
2020
16
All-Time Record Progression
5 new records
5 all-time records were set at Castleford 2 N between 5 December 1994 and 17 February 2017. Each dot is a new record.
When Castleford 2 N set new all-time records
Date
Kind
Detail
1994-12-05
Record daily snowfall
Record daily snowfall 20.3 cm (8.0 in)
1997-08-04
Record high minimum temperature
Record high minimum temperature 22.2 C (72.0 F)
2003-07-24
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
2007-08-16
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
2017-02-17
Record daily snowfall
Record daily snowfall 30.5 cm (12.0 in)
Wettest Day of Each Month
Dec: 76.5 mm (3.0 in)
The wettest day on record for each calendar month at Castleford 2 N. The most was 76.5 mm (3.0 in) on 8 December 1970.
Record daily precipitation for each month at Castleford 2 N
Month
Record daily precipitation (mm)
Date
Jan
25.9 mm (1.0 in)
12 January 1974
Feb
25.4 mm (1.0 in)
29 February 2012
Mar
33.0 mm (1.3 in)
31 March 1997
Apr
38.4 mm (1.5 in)
20 April 2005
May
51.8 mm (2.0 in)
1 May 1983
Jun
43.2 mm (1.7 in)
10 June 1984
Jul
16.8 mm (0.7 in)
1 July 1965
Aug
17.5 mm (0.7 in)
18 August 1968
Sep
24.9 mm (1.0 in)
5 September 1978
Oct
40.6 mm (1.6 in)
4 October 2009
Nov
37.1 mm (1.5 in)
3 November 2015
Dec
76.5 mm (3.0 in)
8 December 1970
Period of Record Coverage
1963 to 2021
Complete yearUnder 90 percent of days
58 years of record at Castleford 2 N, 1963 to 2021. 16 years have data for under 90 percent of days and are left out of rankings: 1963, 1965, 1971, 1995, 1996, 2000, 2001, 2002 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Castleford 2 N, 1966 to 2018. Blue stripes are years cooler than the station's own mean of 9.5 C (49.2 F); red stripes are warmer. The coolest year was 1985, at 6.7 C (44.1 F), and the warmest was 2003, at 10.9 C (51.7 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Castleford 2 N as warming stripes, 1966 to 2018
Year
Annual mean temperature
Difference from the station mean
1966
9.7 C
+0.17 C
1968
9.4 C
-0.17 C
1969
9.5 C
+0.01 C
1970
9.4 C
-0.11 C
1972
8.8 C
-0.69 C
1973
9.4 C
-0.09 C
1974
9.6 C
+0.06 C
1976
9.1 C
-0.45 C
1977
9.8 C
+0.25 C
1978
9.5 C
-0.05 C
1979
9.3 C
-0.19 C
1980
9.8 C
+0.25 C
1981
10.1 C
+0.57 C
1982
8.2 C
-1.30 C
1983
9.6 C
+0.10 C
1984
8.3 C
-1.28 C
1985
6.7 C
-2.79 C
1986
9.8 C
+0.25 C
1987
10.1 C
+0.52 C
1988
10.1 C
+0.54 C
1989
9.1 C
-0.46 C
1990
9.5 C
+0.01 C
1991
9.4 C
-0.18 C
1992
10.3 C
+0.73 C
1993
7.7 C
-1.80 C
1994
9.8 C
+0.27 C
1995
10.3 C
+0.80 C
1997
9.8 C
+0.29 C
1998
10.2 C
+0.69 C
1999
9.9 C
+0.32 C
2003
10.9 C
+1.41 C
2005
9.7 C
+0.21 C
2006
10.2 C
+0.62 C
2007
10.6 C
+1.05 C
2008
9.4 C
-0.16 C
2009
9.4 C
-0.14 C
2011
9.1 C
-0.39 C
2012
10.9 C
+1.35 C
2018
9.4 C
-0.16 C
The fitted trend in annual mean temperature here over 1966 to 2018 is 0.15 C (-0.03 to 0.34) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.1 to 0.6) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Castleford 2 N
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.15 C (-0.03 to 0.34) per decade
0.3 F (-0.1 to 0.6) per decade
1966 to 2018
39
Not clearly different from zero
Mean daily maximum
-0.05 C (-0.27 to 0.17) per decade
-0.1 F (-0.5 to 0.3) per decade
1966 to 2018
39
Not clearly different from zero
Mean daily minimum
0.4 C (0.2 to 0.5) per decade
0.6 F (0.3 to 1.0) per decade
1966 to 2018
39
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
1963 to 2021
Yearly extremes at Castleford 2 N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1978
36.7 C (98.1 F)
58
Coldest night (TNn)
-32.2 C (-26.0 F)
1990
-19.4 C (-2.9 F)
58
Wettest day (Rx1day)
76.5 mm (3.0 in)
1970
20.3 mm (0.8 in)
58
Wettest five days (Rx5day)
103.8 mm (4.1 in)
1996
33.1 mm (1.3 in)
58
Longest dry spell (CDD)
146 days
1999
48 days
58
Hottest day (TXx)
The hottest day of the year at Castleford 2 N, 1963 to 2021. The record is 40.6 C (105.1 F) in 1978, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Castleford 2 N by year
Year
Hottest day (TXx)
1963
35.6 C (96.1 F)
1964
35.6 C (96.1 F)
1965
36.7 C (98.1 F)
1966
36.1 C (97.0 F)
1967
37.2 C (99.0 F)
1968
37.8 C (100.0 F)
1969
36.7 C (98.1 F)
1970
37.8 C (100.0 F)
1971
37.2 C (99.0 F)
1972
37.8 C (100.0 F)
1973
39.4 C (102.9 F)
1974
39.4 C (102.9 F)
1975
36.7 C (98.1 F)
1976
36.1 C (97.0 F)
1977
36.1 C (97.0 F)
1978
40.6 C (105.1 F)
1979
38.9 C (102.0 F)
1980
36.7 C (98.1 F)
1981
36.1 C (97.0 F)
1982
34.4 C (93.9 F)
1983
37.2 C (99.0 F)
1984
36.7 C (98.1 F)
1985
36.7 C (98.1 F)
1986
36.1 C (97.0 F)
1987
36.7 C (98.1 F)
1988
36.7 C (98.1 F)
1989
36.7 C (98.1 F)
1990
37.8 C (100.0 F)
1991
35.6 C (96.1 F)
1992
36.7 C (98.1 F)
1993
33.9 C (93.0 F)
1994
36.1 C (97.0 F)
1995
33.3 C (91.9 F)
1996
40.0 C (104.0 F)
1997
34.4 C (93.9 F)
1998
37.8 C (100.0 F)
1999
36.1 C (97.0 F)
2000
37.2 C (99.0 F)
2001
37.8 C (100.0 F)
2002
38.3 C (100.9 F)
2003
40.6 C (105.1 F)
2004
35.6 C (96.1 F)
2005
37.8 C (100.0 F)
2006
37.2 C (99.0 F)
2007
37.8 C (100.0 F)
2008
36.7 C (98.1 F)
2009
35.0 C (95.0 F)
2010
36.7 C (98.1 F)
2011
35.6 C (96.1 F)
2012
36.1 C (97.0 F)
2013
22.2 C (72.0 F)
2015
35.6 C (96.1 F)
2016
36.1 C (97.0 F)
2017
36.1 C (97.0 F)
2018
37.2 C (99.0 F)
2019
34.4 C (93.9 F)
2020
35.6 C (96.1 F)
2021
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Castleford 2 N, 1963 to 2021. The record is -32.2 C (-26.0 F) in 1990, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Castleford 2 N by year
Year
Coldest night (TNn)
1963
-18.9 C (-2.0 F)
1964
-20.6 C (-5.1 F)
1965
-16.1 C (3.0 F)
1966
-15.6 C (3.9 F)
1967
-20.6 C (-5.1 F)
1968
-22.2 C (-8.0 F)
1969
-16.1 C (3.0 F)
1970
-18.9 C (-2.0 F)
1971
-19.4 C (-2.9 F)
1972
-31.7 C (-25.1 F)
1973
-18.3 C (-0.9 F)
1974
-25.0 C (-13.0 F)
1975
-21.7 C (-7.1 F)
1976
-21.1 C (-6.0 F)
1977
-19.4 C (-2.9 F)
1978
-22.8 C (-9.0 F)
1979
-26.1 C (-15.0 F)
1980
-26.1 C (-15.0 F)
1981
-15.0 C (5.0 F)
1982
-26.1 C (-15.0 F)
1983
-27.2 C (-17.0 F)
1984
-30.6 C (-23.1 F)
1985
-25.0 C (-13.0 F)
1986
-19.4 C (-2.9 F)
1987
-20.6 C (-5.1 F)
1988
-18.3 C (-0.9 F)
1989
-25.6 C (-14.1 F)
1990
-32.2 C (-26.0 F)
1991
-19.4 C (-2.9 F)
1992
-19.4 C (-2.9 F)
1993
-20.0 C (-4.0 F)
1994
-17.8 C (0.0 F)
1995
-15.0 C (5.0 F)
1996
-20.6 C (-5.1 F)
1997
-15.6 C (3.9 F)
1998
-21.7 C (-7.1 F)
1999
-14.4 C (6.1 F)
2000
-12.8 C (9.0 F)
2001
-14.4 C (6.1 F)
2002
-14.4 C (6.1 F)
2003
-12.8 C (9.0 F)
2004
-16.1 C (3.0 F)
2005
-21.7 C (-7.1 F)
2006
-17.8 C (0.0 F)
2007
-17.8 C (0.0 F)
2008
-20.6 C (-5.1 F)
2009
-21.7 C (-7.1 F)
2010
-19.4 C (-2.9 F)
2011
-17.2 C (1.0 F)
2012
-16.7 C (1.9 F)
2013
-22.8 C (-9.0 F)
2015
-23.3 C (-9.9 F)
2016
-25.6 C (-14.1 F)
2017
-26.1 C (-15.0 F)
2018
-13.9 C (7.0 F)
2019
-15.6 C (3.9 F)
2020
-11.7 C (10.9 F)
2021
-6.1 C (21.0 F)
Wettest day (Rx1day)
The wettest day of the year at Castleford 2 N, 1963 to 2021. The record is 76.5 mm (3.0 in) in 1970, marked on the chart; the median year is 20.3 mm (0.8 in).
Wettest day (Rx1day) at Castleford 2 N by year
Year
Wettest day (Rx1day)
1963
20.3 mm (0.8 in)
1964
32.3 mm (1.3 in)
1965
16.8 mm (0.7 in)
1966
11.9 mm (0.5 in)
1967
23.6 mm (0.9 in)
1968
46.0 mm (1.8 in)
1969
37.1 mm (1.5 in)
1970
76.5 mm (3.0 in)
1971
27.9 mm (1.1 in)
1972
23.9 mm (0.9 in)
1973
18.3 mm (0.7 in)
1974
25.9 mm (1.0 in)
1975
16.5 mm (0.6 in)
1976
18.0 mm (0.7 in)
1977
16.5 mm (0.6 in)
1978
24.9 mm (1.0 in)
1979
22.9 mm (0.9 in)
1980
19.6 mm (0.8 in)
1981
15.5 mm (0.6 in)
1982
14.2 mm (0.6 in)
1983
51.8 mm (2.0 in)
1984
43.2 mm (1.7 in)
1985
22.9 mm (0.9 in)
1986
13.5 mm (0.5 in)
1987
13.7 mm (0.5 in)
1988
32.5 mm (1.3 in)
1989
24.1 mm (0.9 in)
1990
21.8 mm (0.9 in)
1991
13.2 mm (0.5 in)
1992
14.5 mm (0.6 in)
1993
27.9 mm (1.1 in)
1994
22.6 mm (0.9 in)
1995
16.5 mm (0.6 in)
1996
50.8 mm (2.0 in)
1997
33.0 mm (1.3 in)
1998
19.6 mm (0.8 in)
1999
12.4 mm (0.5 in)
2000
20.3 mm (0.8 in)
2001
18.8 mm (0.7 in)
2002
19.1 mm (0.8 in)
2003
18.5 mm (0.7 in)
2004
8.9 mm (0.35 in)
2005
38.4 mm (1.5 in)
2006
22.9 mm (0.9 in)
2007
38.1 mm (1.5 in)
2008
21.6 mm (0.9 in)
2009
40.6 mm (1.6 in)
2010
20.3 mm (0.8 in)
2011
15.5 mm (0.6 in)
2012
25.4 mm (1.0 in)
2013
9.7 mm (0.38 in)
2015
37.1 mm (1.5 in)
2016
15.7 mm (0.6 in)
2017
20.1 mm (0.8 in)
2018
17.8 mm (0.7 in)
2019
18.3 mm (0.7 in)
2020
10.7 mm (0.4 in)
2021
0.5 mm (0.02 in)
Wettest five days (Rx5day)
The wettest five days of the year at Castleford 2 N, 1963 to 2021. The record is 103.8 mm (4.1 in) in 1996, marked on the chart; the median year is 33.1 mm (1.3 in).
Wettest five days (Rx5day) at Castleford 2 N by year
Year
Wettest five days (Rx5day)
1963
33.2 mm (1.3 in)
1964
70.4 mm (2.8 in)
1965
25.5 mm (1.0 in)
1966
19.2 mm (0.8 in)
1967
29.5 mm (1.2 in)
1968
61.5 mm (2.4 in)
1969
72.1 mm (2.8 in)
1970
80.0 mm (3.1 in)
1971
42.4 mm (1.7 in)
1972
42.6 mm (1.7 in)
1973
27.2 mm (1.1 in)
1974
33.0 mm (1.3 in)
1975
34.3 mm (1.4 in)
1976
47.0 mm (1.9 in)
1977
30.4 mm (1.2 in)
1978
40.9 mm (1.6 in)
1979
40.1 mm (1.6 in)
1980
30.7 mm (1.2 in)
1981
27.7 mm (1.1 in)
1982
27.8 mm (1.1 in)
1983
64.0 mm (2.5 in)
1984
52.8 mm (2.1 in)
1985
45.0 mm (1.8 in)
1986
38.4 mm (1.5 in)
1987
22.7 mm (0.9 in)
1988
32.5 mm (1.3 in)
1989
45.0 mm (1.8 in)
1990
41.0 mm (1.6 in)
1991
33.8 mm (1.3 in)
1992
25.6 mm (1.0 in)
1993
48.2 mm (1.9 in)
1994
32.5 mm (1.3 in)
1995
28.8 mm (1.1 in)
1996
103.8 mm (4.1 in)
1997
60.9 mm (2.4 in)
1998
42.7 mm (1.7 in)
1999
28.1 mm (1.1 in)
2000
23.6 mm (0.9 in)
2001
22.4 mm (0.9 in)
2002
19.1 mm (0.8 in)
2003
18.8 mm (0.7 in)
2004
12.2 mm (0.5 in)
2005
46.6 mm (1.8 in)
2006
39.9 mm (1.6 in)
2007
45.7 mm (1.8 in)
2008
29.8 mm (1.2 in)
2009
40.6 mm (1.6 in)
2010
30.0 mm (1.2 in)
2011
25.6 mm (1.0 in)
2012
35.5 mm (1.4 in)
2013
10.0 mm (0.4 in)
2015
37.6 mm (1.5 in)
2016
34.8 mm (1.4 in)
2017
23.6 mm (0.9 in)
2018
23.2 mm (0.9 in)
2019
28.4 mm (1.1 in)
2020
16.0 mm (0.6 in)
2021
0.5 mm (0.02 in)
Longest dry spell (CDD)
The longest dry spell of the year at Castleford 2 N, 1963 to 2021. The record is 146 days in 1999, marked on the chart; the median year is 48 days.
Longest dry spell (CDD) at Castleford 2 N by year
Year
Longest dry spell (CDD)
1963
29 days
1964
50 days
1965
33 days
1966
45 days
1967
64 days
1968
61 days
1969
105 days
1970
18 days
1971
38 days
1972
57 days
1973
38 days
1974
56 days
1975
47 days
1976
90 days
1977
52 days
1978
64 days
1979
47 days
1980
30 days
1981
103 days
1982
56 days
1983
27 days
1984
43 days
1985
30 days
1986
43 days
1987
102 days
1988
84 days
1989
47 days
1990
66 days
1991
70 days
1992
94 days
1993
77 days
1994
120 days
1995
43 days
1996
60 days
1997
57 days
1998
41 days
1999
146 days
2000
48 days
2001
42 days
2002
43 days
2003
64 days
2004
30 days
2005
39 days
2006
70 days
2007
44 days
2008
56 days
2009
41 days
2010
33 days
2011
31 days
2012
28 days
2013
17 days
2015
31 days
2016
55 days
2017
67 days
2018
106 days
2019
24 days
2020
49 days
2021
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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Castleford 2 N falls on 16 May and the median first autumn frost on 22 September, which leaves a median of 130 days between them.
Fitted over all years, the growing season changes by +7.3 days per decade at this station.
Frost dates and growing season at Castleford 2 N
Measure
Median, all years
Earliest period
Recent period (1978 to 2018)
Recent against earliest
Fitted trend
Last spring frost
16 May
n/a
16 May
n/a
-3.6 days per decade
First autumn frost
22 September
n/a
26 September
n/a
+3.7 days per decade
Growing days
130 days
n/a
136 days
n/a
+7.3 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
45 years, 1964 to 2018
A day with at least 22.3 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 79.6 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Castleford 2 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
22.3 mm (0.9 in)
5 years
32.7 mm (1.3 in)
10 years
41.2 mm (1.6 in)
25 years
54.3 mm (2.1 in)
50 years
66.0 mm (2.6 in)
Longer than the 45 years of record
100 years
79.6 mm (3.1 in)
Longer than the 45 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, 45 years of values from 1964 to 2018.
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: 76.5 mm (3.0 in) in 1970; 51.8 mm (2.0 in) in 1983; 50.8 mm (2.0 in) in 1996.
Download the Data
Data for Castleford 2 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Castleford 2 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.