Record envelope, standing records and threshold days for McCammon (USC00105716), Idaho, United States, with 76 years of record.
Key Facts for McCammon
McCammon (USC00105716) is a weather station in Idaho, United States at 42.65 latitude and -112.19 longitude, 1,454 m (4,770 ft) above sea level.
The station reports from 1949 to 2024, 76 years of record.
1,464 records set at McCammon still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
McCammon tied a daily record high minimum temperature of 7.8 C (46.0 F) on 24 April 2024.
About the Station
Location: Idaho, United States, 42.65 latitude, -112.19 longitude.
Elevation: 1,454 m (4,770 ft).
Period of record: 1949 to 2024, 76 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 McCammon. 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 McCammon, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
11.1 C (52.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Mar
23.3 C (73.9 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-11.1 C (12.0 F)
n/a
n/a
May
34.4 C (93.9 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
39.4 C (102.9 F)
1.1 C (34.0 F)
n/a
n/a
Aug
38.3 C (100.9 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-18.9 C (-2.0 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Dec
16.1 C (61.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at McCammon still stand. 1955 holds the most, with 59.
Standing records at McCammon by the year they were set
Year set
Standing records
1949
20
1950
51
1951
30
1952
41
1953
35
1954
50
1955
59
1956
38
1957
22
1958
30
1959
28
1960
42
1961
23
1962
26
1963
26
1964
22
1987
15
1988
24
1989
33
1990
42
1991
16
1992
34
1993
38
1994
30
1995
39
1996
30
1997
18
1998
21
1999
24
2000
20
2001
39
2002
5
2003
38
2004
22
2005
15
2006
22
2007
27
2008
20
2009
22
2010
24
2011
11
2012
19
2013
14
2014
24
2015
47
2016
21
2017
27
2018
15
2019
25
2020
24
2021
20
2022
24
2023
28
2024
4
All-Time Record Progression
1 new records
1 all-time records were set at McCammon between 18 August 2020 and 18 August 2020. Each dot is a new record.
When McCammon set new all-time records
Date
Kind
Detail
2020-08-18
Record high minimum temperature
Record high minimum temperature 21.1 C (70.0 F)
Wettest Day of Each Month
Dec: 71.1 mm (2.8 in)
The wettest day on record for each calendar month at McCammon. The most was 71.1 mm (2.8 in) on 31 December 2002.
Record daily precipitation for each month at McCammon
Month
Record daily precipitation (mm)
Date
Jan
22.6 mm (0.9 in)
29 January 1958
Feb
35.8 mm (1.4 in)
1 February 1963
Mar
32.3 mm (1.3 in)
2 March 1989
Apr
27.2 mm (1.1 in)
28 April 1954
May
35.3 mm (1.4 in)
24 May 1953
Jun
32.5 mm (1.3 in)
6 June 2005
Jul
30.7 mm (1.2 in)
4 July 1961
Aug
34.0 mm (1.3 in)
13 August 1997
Sep
48.8 mm (1.9 in)
7 September 2002
Oct
35.3 mm (1.4 in)
26 October 2010
Nov
25.9 mm (1.0 in)
10 November 1949
Dec
71.1 mm (2.8 in)
31 December 2002
Period of Record Coverage
1949 to 2024
Complete yearUnder 90 percent of days
54 years of record at McCammon, 1949 to 2024. 13 years have data for under 90 percent of days and are left out of rankings: 1949, 1964, 1987, 1992, 1997, 2000, 2001, 2002 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at McCammon, 1950 to 2022. Blue stripes are years cooler than the station's own mean of 7.9 C (46.2 F); red stripes are warmer. The coolest year was 1993, at 6.0 C (42.9 F), and the warmest was 2015, at 9.2 C (48.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at McCammon as warming stripes, 1950 to 2022
Year
Annual mean temperature
Difference from the station mean
1950
8.3 C
+0.45 C
1951
7.2 C
-0.70 C
1952
6.9 C
-1.00 C
1953
8.7 C
+0.82 C
1954
8.2 C
+0.29 C
1955
6.6 C
-1.25 C
1956
7.5 C
-0.35 C
1957
7.6 C
-0.23 C
1958
8.8 C
+0.96 C
1959
8.2 C
+0.31 C
1960
7.5 C
-0.41 C
1961
8.2 C
+0.30 C
1962
7.6 C
-0.28 C
1963
8.0 C
+0.11 C
1988
8.0 C
+0.08 C
1989
7.2 C
-0.68 C
1990
8.1 C
+0.25 C
1991
7.1 C
-0.81 C
1993
6.0 C
-1.84 C
1994
8.8 C
+0.89 C
1995
8.4 C
+0.56 C
1996
8.0 C
+0.13 C
1998
8.4 C
+0.57 C
1999
8.5 C
+0.58 C
2003
8.5 C
+0.59 C
2004
7.2 C
-0.71 C
2006
7.2 C
-0.64 C
2007
7.9 C
+0.05 C
2015
9.2 C
+1.34 C
2016
8.4 C
+0.48 C
2017
8.1 C
+0.27 C
2018
8.5 C
+0.66 C
2019
7.2 C
-0.71 C
2021
8.7 C
+0.87 C
2022
7.0 C
-0.85 C
The fitted trend in annual mean temperature here over 1950 to 2022 is 0.04 C (-0.06 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 0.3) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at McCammon
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.06 to 0.14) per decade
0.1 F (-0.1 to 0.3) per decade
1950 to 2022
35
Not clearly different from zero
Mean daily maximum
-0.10 C (-0.22 to 0.02) per decade
-0.18 F (-0.39 to 0.03) per decade
1950 to 2022
35
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1950 to 2022
35
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
1949 to 2024
Yearly extremes at McCammon: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
1950
35.9 C (96.5 F)
54
Coldest night (TNn)
-35.0 C (-31.0 F)
1990
-24.4 C (-11.9 F)
54
Wettest day (Rx1day)
71.1 mm (2.8 in)
2002
25.5 mm (1.0 in)
54
Wettest five days (Rx5day)
79.0 mm (3.1 in)
2003
41.5 mm (1.6 in)
54
Longest dry spell (CDD)
82 days
1988
35 days
54
Hottest day (TXx)
The hottest day of the year at McCammon, 1949 to 2024. The record is 39.4 C (102.9 F) in 1950, marked on the chart; the median year is 35.9 C (96.5 F).
Hottest day (TXx) at McCammon by year
Year
Hottest day (TXx)
1949
33.3 C (91.9 F)
1950
39.4 C (102.9 F)
1951
37.2 C (99.0 F)
1952
34.4 C (93.9 F)
1953
36.1 C (97.0 F)
1954
37.8 C (100.0 F)
1955
37.2 C (99.0 F)
1956
39.4 C (102.9 F)
1957
37.2 C (99.0 F)
1958
37.8 C (100.0 F)
1959
37.8 C (100.0 F)
1960
38.9 C (102.0 F)
1961
37.8 C (100.0 F)
1962
37.8 C (100.0 F)
1963
37.2 C (99.0 F)
1964
35.6 C (96.1 F)
1987
34.4 C (93.9 F)
1988
36.1 C (97.0 F)
1989
36.1 C (97.0 F)
1990
36.7 C (98.1 F)
1991
35.0 C (95.0 F)
1992
37.8 C (100.0 F)
1993
30.0 C (86.0 F)
1994
36.1 C (97.0 F)
1995
34.4 C (93.9 F)
1996
34.4 C (93.9 F)
1997
33.9 C (93.0 F)
1998
37.2 C (99.0 F)
1999
34.4 C (93.9 F)
2000
38.3 C (100.9 F)
2001
38.3 C (100.9 F)
2002
32.2 C (90.0 F)
2003
38.3 C (100.9 F)
2004
35.0 C (95.0 F)
2005
36.7 C (98.1 F)
2006
36.7 C (98.1 F)
2007
37.8 C (100.0 F)
2008
35.6 C (96.1 F)
2009
35.0 C (95.0 F)
2010
35.0 C (95.0 F)
2011
35.0 C (95.0 F)
2012
36.7 C (98.1 F)
2013
23.9 C (75.0 F)
2014
35.0 C (95.0 F)
2015
36.1 C (97.0 F)
2016
33.9 C (93.0 F)
2017
35.6 C (96.1 F)
2018
35.0 C (95.0 F)
2019
33.9 C (93.0 F)
2020
35.0 C (95.0 F)
2021
35.6 C (96.1 F)
2022
35.0 C (95.0 F)
2023
35.0 C (95.0 F)
2024
23.3 C (73.9 F)
Coldest night (TNn)
The coldest night of the year at McCammon, 1949 to 2024. The record is -35.0 C (-31.0 F) in 1990, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at McCammon by year
Year
Coldest night (TNn)
1949
-22.2 C (-8.0 F)
1950
-26.1 C (-15.0 F)
1951
-28.3 C (-18.9 F)
1952
-28.3 C (-18.9 F)
1953
-18.9 C (-2.0 F)
1954
-23.3 C (-9.9 F)
1955
-28.3 C (-18.9 F)
1956
-28.9 C (-20.0 F)
1957
-25.6 C (-14.1 F)
1958
-21.7 C (-7.1 F)
1959
-24.4 C (-11.9 F)
1960
-32.2 C (-26.0 F)
1961
-25.0 C (-13.0 F)
1962
-33.3 C (-27.9 F)
1963
-30.0 C (-22.0 F)
1964
-28.9 C (-20.0 F)
1987
-20.0 C (-4.0 F)
1988
-27.2 C (-17.0 F)
1989
-31.7 C (-25.1 F)
1990
-35.0 C (-31.0 F)
1991
-23.3 C (-9.9 F)
1992
-26.1 C (-15.0 F)
1993
-23.9 C (-11.0 F)
1994
-21.7 C (-7.1 F)
1995
-19.4 C (-2.9 F)
1996
-27.8 C (-18.0 F)
1997
-18.9 C (-2.0 F)
1998
-22.8 C (-9.0 F)
1999
-17.2 C (1.0 F)
2000
-17.8 C (0.0 F)
2001
-27.2 C (-17.0 F)
2002
-16.1 C (3.0 F)
2003
-20.6 C (-5.1 F)
2004
-25.0 C (-13.0 F)
2005
-25.0 C (-13.0 F)
2006
-22.8 C (-9.0 F)
2007
-22.8 C (-9.0 F)
2008
-27.8 C (-18.0 F)
2009
-28.3 C (-18.9 F)
2010
-28.3 C (-18.9 F)
2011
-23.3 C (-9.9 F)
2012
-16.7 C (1.9 F)
2013
-26.7 C (-16.1 F)
2014
-23.9 C (-11.0 F)
2015
-23.9 C (-11.0 F)
2016
-26.1 C (-15.0 F)
2017
-30.6 C (-23.1 F)
2018
-18.3 C (-0.9 F)
2019
-18.9 C (-2.0 F)
2020
-17.8 C (0.0 F)
2021
-15.6 C (3.9 F)
2022
-21.7 C (-7.1 F)
2023
-31.1 C (-24.0 F)
2024
-24.4 C (-11.9 F)
Wettest day (Rx1day)
The wettest day of the year at McCammon, 1949 to 2024. The record is 71.1 mm (2.8 in) in 2002, marked on the chart; the median year is 25.5 mm (1.0 in).
Wettest day (Rx1day) at McCammon by year
Year
Wettest day (Rx1day)
1949
25.9 mm (1.0 in)
1950
25.4 mm (1.0 in)
1951
20.6 mm (0.8 in)
1952
25.9 mm (1.0 in)
1953
35.3 mm (1.4 in)
1954
30.5 mm (1.2 in)
1955
36.1 mm (1.4 in)
1956
26.4 mm (1.0 in)
1957
31.8 mm (1.3 in)
1958
22.6 mm (0.9 in)
1959
25.7 mm (1.0 in)
1960
26.7 mm (1.1 in)
1961
30.7 mm (1.2 in)
1962
30.7 mm (1.2 in)
1963
35.8 mm (1.4 in)
1964
33.8 mm (1.3 in)
1987
23.4 mm (0.9 in)
1988
18.5 mm (0.7 in)
1989
32.3 mm (1.3 in)
1990
23.4 mm (0.9 in)
1991
27.4 mm (1.1 in)
1992
22.6 mm (0.9 in)
1993
29.2 mm (1.1 in)
1994
26.9 mm (1.1 in)
1995
25.7 mm (1.0 in)
1996
31.0 mm (1.2 in)
1997
34.0 mm (1.3 in)
1998
21.3 mm (0.8 in)
1999
21.1 mm (0.8 in)
2000
19.6 mm (0.8 in)
2001
50.8 mm (2.0 in)
2002
71.1 mm (2.8 in)
2003
19.1 mm (0.8 in)
2004
22.1 mm (0.9 in)
2005
32.5 mm (1.3 in)
2006
27.7 mm (1.1 in)
2007
14.0 mm (0.6 in)
2008
15.7 mm (0.6 in)
2009
22.1 mm (0.9 in)
2010
35.3 mm (1.4 in)
2011
20.3 mm (0.8 in)
2012
22.6 mm (0.9 in)
2013
17.8 mm (0.7 in)
2014
42.2 mm (1.7 in)
2015
26.7 mm (1.1 in)
2016
22.4 mm (0.9 in)
2017
16.0 mm (0.6 in)
2018
17.0 mm (0.7 in)
2019
16.3 mm (0.6 in)
2020
16.8 mm (0.7 in)
2021
13.0 mm (0.5 in)
2022
18.8 mm (0.7 in)
2023
20.6 mm (0.8 in)
2024
2.8 mm (0.11 in)
Wettest five days (Rx5day)
The wettest five days of the year at McCammon, 1949 to 2024. The record is 79.0 mm (3.1 in) in 2003, marked on the chart; the median year is 41.5 mm (1.6 in).
Wettest five days (Rx5day) at McCammon by year
Year
Wettest five days (Rx5day)
1949
36.6 mm (1.4 in)
1950
47.7 mm (1.9 in)
1951
38.6 mm (1.5 in)
1952
32.5 mm (1.3 in)
1953
39.9 mm (1.6 in)
1954
31.8 mm (1.3 in)
1955
52.6 mm (2.1 in)
1956
51.2 mm (2.0 in)
1957
51.8 mm (2.0 in)
1958
41.4 mm (1.6 in)
1959
48.5 mm (1.9 in)
1960
55.5 mm (2.2 in)
1961
48.2 mm (1.9 in)
1962
35.8 mm (1.4 in)
1963
55.5 mm (2.2 in)
1964
56.7 mm (2.2 in)
1987
40.1 mm (1.6 in)
1988
37.0 mm (1.5 in)
1989
35.3 mm (1.4 in)
1990
41.6 mm (1.6 in)
1991
39.3 mm (1.5 in)
1992
34.5 mm (1.4 in)
1993
70.1 mm (2.8 in)
1994
32.8 mm (1.3 in)
1995
43.3 mm (1.7 in)
1996
73.0 mm (2.9 in)
1997
49.2 mm (1.9 in)
1998
64.3 mm (2.5 in)
1999
42.9 mm (1.7 in)
2000
46.5 mm (1.8 in)
2001
25.4 mm (1.0 in)
2002
73.4 mm (2.9 in)
2003
79.0 mm (3.1 in)
2004
46.9 mm (1.8 in)
2005
53.3 mm (2.1 in)
2006
32.8 mm (1.3 in)
2007
24.2 mm (1.0 in)
2008
28.9 mm (1.1 in)
2009
50.5 mm (2.0 in)
2010
47.5 mm (1.9 in)
2011
31.5 mm (1.2 in)
2012
61.3 mm (2.4 in)
2013
19.1 mm (0.8 in)
2014
64.8 mm (2.6 in)
2015
46.7 mm (1.8 in)
2016
60.0 mm (2.4 in)
2017
16.0 mm (0.6 in)
2018
20.1 mm (0.8 in)
2019
28.8 mm (1.1 in)
2020
37.4 mm (1.5 in)
2021
24.7 mm (1.0 in)
2022
18.8 mm (0.7 in)
2023
20.6 mm (0.8 in)
2024
0.0 mm (0.00 in)
Longest dry spell (CDD)
The longest dry spell of the year at McCammon, 1949 to 2024. The record is 82 days in 1988, marked on the chart; the median year is 35 days.
Longest dry spell (CDD) at McCammon by year
Year
Longest dry spell (CDD)
1949
19 days
1950
24 days
1951
44 days
1952
63 days
1953
50 days
1954
32 days
1955
22 days
1956
54 days
1957
32 days
1958
42 days
1959
38 days
1960
24 days
1961
29 days
1962
33 days
1963
40 days
1964
38 days
1987
42 days
1988
82 days
1989
34 days
1990
36 days
1991
31 days
1992
29 days
1993
37 days
1994
22 days
1995
29 days
1996
36 days
1997
21 days
1998
19 days
1999
55 days
2000
37 days
2001
50 days
2002
31 days
2003
38 days
2004
25 days
2005
26 days
2006
25 days
2007
41 days
2008
28 days
2009
25 days
2010
42 days
2011
41 days
2012
45 days
2013
14 days
2014
32 days
2015
35 days
2016
36 days
2017
26 days
2018
64 days
2019
22 days
2020
44 days
2021
53 days
2022
20 days
2023
35 days
2024
7 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
35 years with a frost
Across 35 years with a frost, the median last spring frost at McCammon falls on 31 May and the median first autumn frost on 14 September, which leaves a median of 109 days between them.
Fitted over all years, the growing season changes by +3.0 days per decade at this station.
Frost dates and growing season at McCammon
Measure
Median, all years
Earliest period
Recent period (1955 to 2022)
Recent against earliest
Fitted trend
Last spring frost
31 May
n/a
25 May
n/a
-1.0 days per decade
First autumn frost
14 September
n/a
16 September
n/a
+2.1 days per decade
Growing days
109 days
n/a
114 days
n/a
+3.0 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
37 years, 1950 to 2012
A day with at least 26.3 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 46.0 mm (1.8 in) of rain is expected about once in 100 years.
Rainfall return levels at McCammon: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
26.3 mm (1.0 in)
5 years
32.5 mm (1.3 in)
10 years
36.3 mm (1.4 in)
25 years
40.5 mm (1.6 in)
50 years
43.4 mm (1.7 in)
Longer than the 37 years of record
100 years
46.0 mm (1.8 in)
Longer than the 37 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, 37 years of values from 1950 to 2012.
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: 50.8 mm (2.0 in) in 2001; 36.1 mm (1.4 in) in 1955; 35.8 mm (1.4 in) in 1963.
Download the Data
Data for McCammon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for McCammon 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.