Record envelope, standing records and threshold days for Spencer (USC00108604), Idaho, United States, with 99 years of record.
Key Facts for Spencer
Spencer (USC00108604) is a weather station in Idaho, United States at 44.36 latitude and -112.19 longitude, 1,796 m (5,892 ft) above sea level.
The station reports from 1915 to 2013, 99 years of record.
1,464 records set at Spencer still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Spencer set a daily record high maximum temperature of 32.8 C (91.0 F) on 29 June 2013.
About the Station
Location: Idaho, United States, 44.36 latitude, -112.19 longitude.
Elevation: 1,796 m (5,892 ft).
Period of record: 1915 to 2013, 99 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Spencer. 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 Spencer, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
8.3 C (46.9 F)
-38.9 C (-38.0 F)
n/a
n/a
Feb
9.4 C (48.9 F)
-37.2 C (-35.0 F)
n/a
n/a
Mar
19.4 C (66.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Apr
26.1 C (79.0 F)
-23.3 C (-9.9 F)
n/a
n/a
May
31.1 C (88.0 F)
-10.6 C (12.9 F)
n/a
n/a
Jun
33.3 C (91.9 F)
-8.3 C (17.1 F)
n/a
n/a
Jul
36.7 C (98.1 F)
-2.2 C (28.0 F)
n/a
n/a
Aug
35.6 C (96.1 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-12.8 C (9.0 F)
n/a
n/a
Oct
28.3 C (82.9 F)
-20.6 C (-5.1 F)
n/a
n/a
Nov
20.0 C (68.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Dec
11.7 C (53.1 F)
-38.3 C (-36.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Spencer still stand. 1934 holds the most, with 63.
Standing records at Spencer by the year they were set
Year set
Standing records
1916
17
1917
47
1918
51
1919
47
1920
26
1921
28
1922
37
1923
24
1924
32
1925
10
1926
25
1927
28
1928
9
1929
13
1930
14
1931
7
1932
17
1933
31
1934
63
1935
26
1936
35
1937
28
1938
35
1939
49
1940
36
1941
21
1942
29
1943
42
1944
21
1945
22
1946
23
1947
29
1948
21
1949
45
1950
47
1951
31
1952
31
1953
22
1954
38
1955
37
1956
30
1957
17
1958
28
1959
22
1960
30
2006
18
2007
53
2008
25
2009
22
2012
12
2013
13
All-Time Record Progression
2 new records
2 all-time records were set at Spencer between 25 December 1959 and 23 July 2007. Each dot is a new record.
When Spencer set new all-time records
Date
Kind
Detail
1959-12-25
Record daily snowfall
Record daily snowfall 43.2 cm (17.0 in)
2007-07-23
Record high maximum temperature
Record high maximum temperature 36.7 C (98.1 F)
Wettest Day of Each Month
Jul: 75.4 mm (3.0 in)
The wettest day on record for each calendar month at Spencer. The most was 75.4 mm (3.0 in) on 9 July 1918.
Record daily precipitation for each month at Spencer
Month
Record daily precipitation (mm)
Date
Jan
40.6 mm (1.6 in)
18 January 1921
Feb
45.7 mm (1.8 in)
7 February 1927
Mar
54.1 mm (2.1 in)
3 March 1917
Apr
39.9 mm (1.6 in)
23 April 1925
May
45.7 mm (1.8 in)
31 May 1918
Jun
53.6 mm (2.1 in)
26 June 1944
Jul
75.4 mm (3.0 in)
9 July 1918
Aug
25.9 mm (1.0 in)
20 August 1923
Sep
31.8 mm (1.3 in)
24 September 1920
Oct
38.9 mm (1.5 in)
9 October 1938
Nov
32.8 mm (1.3 in)
19 November 1928
Dec
45.2 mm (1.8 in)
25 December 1959
Period of Record Coverage
1916 to 2013
Complete yearUnder 90 percent of days
51 years of record at Spencer, 1916 to 2013. 25 years have data for under 90 percent of days and are left out of rankings: 1916, 1917, 1919, 1921, 1922, 1923, 1924, 1925 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at Spencer, 1918 to 2008. Blue stripes are years cooler than the station's own mean of 3.9 C (39.0 F); red stripes are warmer. The coolest year was 1944, at 2.9 C (37.2 F), and the warmest was 2007, at 6.3 C (43.4 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Spencer as warming stripes, 1918 to 2008
Year
Annual mean temperature
Difference from the station mean
1918
4.0 C
+0.05 C
1919
3.2 C
-0.71 C
1920
3.3 C
-0.56 C
1937
3.4 C
-0.46 C
1938
4.0 C
+0.14 C
1939
4.4 C
+0.48 C
1941
4.5 C
+0.63 C
1942
3.3 C
-0.62 C
1943
3.9 C
-0.01 C
1944
2.9 C
-1.03 C
1945
3.0 C
-0.86 C
1946
3.8 C
-0.06 C
1947
4.0 C
+0.05 C
1948
3.2 C
-0.68 C
1949
3.7 C
-0.17 C
1950
3.7 C
-0.23 C
1951
2.9 C
-0.98 C
1952
3.5 C
-0.43 C
1953
4.8 C
+0.93 C
1954
4.6 C
+0.70 C
1956
3.7 C
-0.21 C
1958
4.9 C
+1.00 C
1959
4.0 C
+0.10 C
2007
6.3 C
+2.43 C
2008
4.4 C
+0.54 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
1915 to 2013
Yearly extremes at Spencer: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
2007
32.8 C (91.0 F)
51
Coldest night (TNn)
-38.9 C (-38.0 F)
1937
-29.4 C (-20.9 F)
51
Wettest day (Rx1day)
75.4 mm (3.0 in)
1918
29.5 mm (1.2 in)
52
Wettest five days (Rx5day)
120.6 mm (4.7 in)
1945
47.2 mm (1.9 in)
52
Longest dry spell (CDD)
83 days
1935
27 days
52
Hottest day (TXx)
The hottest day of the year at Spencer, 1915 to 2013. The record is 36.7 C (98.1 F) in 2007, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Spencer by year
Year
Hottest day (TXx)
1915
n/a
1916
31.7 C (89.1 F)
1917
32.2 C (90.0 F)
1918
32.8 C (91.0 F)
1919
33.3 C (91.9 F)
1920
33.3 C (91.9 F)
1921
33.3 C (91.9 F)
1922
31.7 C (89.1 F)
1923
32.8 C (91.0 F)
1924
33.9 C (93.0 F)
1925
32.8 C (91.0 F)
1926
33.3 C (91.9 F)
1927
28.9 C (84.0 F)
1928
13.9 C (57.0 F)
1929
16.7 C (62.1 F)
1930
22.2 C (72.0 F)
1931
19.4 C (66.9 F)
1932
9.4 C (48.9 F)
1933
32.2 C (90.0 F)
1934
36.1 C (97.0 F)
1935
34.4 C (93.9 F)
1936
34.4 C (93.9 F)
1937
33.3 C (91.9 F)
1938
31.7 C (89.1 F)
1939
34.4 C (93.9 F)
1940
35.6 C (96.1 F)
1941
32.2 C (90.0 F)
1942
33.3 C (91.9 F)
1943
33.9 C (93.0 F)
1944
30.0 C (86.0 F)
1945
32.2 C (90.0 F)
1946
34.4 C (93.9 F)
1947
32.8 C (91.0 F)
1948
32.8 C (91.0 F)
1949
34.4 C (93.9 F)
1950
33.9 C (93.0 F)
1951
35.0 C (95.0 F)
1952
32.2 C (90.0 F)
1953
33.9 C (93.0 F)
1954
34.4 C (93.9 F)
1955
32.8 C (91.0 F)
1956
32.8 C (91.0 F)
1957
30.6 C (87.1 F)
1958
32.8 C (91.0 F)
1959
33.3 C (91.9 F)
1960
35.0 C (95.0 F)
2006
27.2 C (81.0 F)
2007
36.7 C (98.1 F)
2008
33.9 C (93.0 F)
2009
27.8 C (82.0 F)
2012
32.8 C (91.0 F)
2013
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Spencer, 1915 to 2013. The record is -38.9 C (-38.0 F) in 1937, marked on the chart; the median year is -29.4 C (-20.9 F).
Coldest night (TNn) at Spencer by year
Year
Coldest night (TNn)
1915
n/a
1916
-28.3 C (-18.9 F)
1917
-32.2 C (-26.0 F)
1918
-29.4 C (-20.9 F)
1919
-37.2 C (-35.0 F)
1920
-25.6 C (-14.1 F)
1921
-27.2 C (-17.0 F)
1922
-33.3 C (-27.9 F)
1923
-29.4 C (-20.9 F)
1924
-38.3 C (-36.9 F)
1925
-24.4 C (-11.9 F)
1926
-30.6 C (-23.1 F)
1927
-32.8 C (-27.0 F)
1928
-25.6 C (-14.1 F)
1929
-28.9 C (-20.0 F)
1930
-33.3 C (-27.9 F)
1931
-28.3 C (-18.9 F)
1932
-33.3 C (-27.9 F)
1933
-37.2 C (-35.0 F)
1934
-22.2 C (-8.0 F)
1935
-33.3 C (-27.9 F)
1936
-35.6 C (-32.1 F)
1937
-38.9 C (-38.0 F)
1938
-24.4 C (-11.9 F)
1939
-27.8 C (-18.0 F)
1940
-28.9 C (-20.0 F)
1941
-26.1 C (-15.0 F)
1942
-33.9 C (-29.0 F)
1943
-36.1 C (-33.0 F)
1944
-28.9 C (-20.0 F)
1945
-29.4 C (-20.9 F)
1946
-26.1 C (-15.0 F)
1947
-30.0 C (-22.0 F)
1948
-30.6 C (-23.1 F)
1949
-33.3 C (-27.9 F)
1950
-35.0 C (-31.0 F)
1951
-37.2 C (-35.0 F)
1952
-28.9 C (-20.0 F)
1953
-22.8 C (-9.0 F)
1954
-28.9 C (-20.0 F)
1955
-30.6 C (-23.1 F)
1956
-30.6 C (-23.1 F)
1957
-28.3 C (-18.9 F)
1958
-24.4 C (-11.9 F)
1959
-35.0 C (-31.0 F)
1960
-30.0 C (-22.0 F)
2006
-26.1 C (-15.0 F)
2007
-23.9 C (-11.0 F)
2008
-27.8 C (-18.0 F)
2009
-31.1 C (-24.0 F)
2012
-23.9 C (-11.0 F)
2013
-30.6 C (-23.1 F)
Wettest day (Rx1day)
The wettest day of the year at Spencer, 1915 to 2013. The record is 75.4 mm (3.0 in) in 1918, marked on the chart; the median year is 29.5 mm (1.2 in).
Wettest day (Rx1day) at Spencer by year
Year
Wettest day (Rx1day)
1915
21.6 mm (0.9 in)
1916
33.5 mm (1.3 in)
1917
54.1 mm (2.1 in)
1918
75.4 mm (3.0 in)
1919
26.2 mm (1.0 in)
1920
31.8 mm (1.3 in)
1921
40.6 mm (1.6 in)
1922
25.4 mm (1.0 in)
1923
25.9 mm (1.0 in)
1924
33.0 mm (1.3 in)
1925
46.2 mm (1.8 in)
1926
24.6 mm (1.0 in)
1927
45.7 mm (1.8 in)
1928
32.8 mm (1.3 in)
1929
25.4 mm (1.0 in)
1930
38.4 mm (1.5 in)
1931
22.4 mm (0.9 in)
1932
19.3 mm (0.8 in)
1933
23.6 mm (0.9 in)
1934
38.4 mm (1.5 in)
1935
34.0 mm (1.3 in)
1936
20.3 mm (0.8 in)
1937
21.3 mm (0.8 in)
1938
38.9 mm (1.5 in)
1939
29.2 mm (1.1 in)
1940
29.7 mm (1.2 in)
1941
29.5 mm (1.2 in)
1942
24.9 mm (1.0 in)
1943
29.7 mm (1.2 in)
1944
53.6 mm (2.1 in)
1945
45.0 mm (1.8 in)
1946
35.6 mm (1.4 in)
1947
23.4 mm (0.9 in)
1948
21.6 mm (0.9 in)
1949
27.9 mm (1.1 in)
1950
23.4 mm (0.9 in)
1951
33.0 mm (1.3 in)
1952
29.5 mm (1.2 in)
1953
38.9 mm (1.5 in)
1954
25.7 mm (1.0 in)
1955
21.6 mm (0.9 in)
1956
21.3 mm (0.8 in)
1957
21.6 mm (0.9 in)
1958
29.5 mm (1.2 in)
1959
45.2 mm (1.8 in)
1960
25.4 mm (1.0 in)
2006
33.5 mm (1.3 in)
2007
22.9 mm (0.9 in)
2008
31.2 mm (1.2 in)
2009
18.0 mm (0.7 in)
2012
31.7 mm (1.2 in)
2013
23.1 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Spencer, 1915 to 2013. The record is 120.6 mm (4.7 in) in 1945, marked on the chart; the median year is 47.2 mm (1.9 in).
Wettest five days (Rx5day) at Spencer by year
Year
Wettest five days (Rx5day)
1915
21.6 mm (0.9 in)
1916
61.7 mm (2.4 in)
1917
54.1 mm (2.1 in)
1918
88.8 mm (3.5 in)
1919
39.1 mm (1.5 in)
1920
36.6 mm (1.4 in)
1921
59.4 mm (2.3 in)
1922
41.6 mm (1.6 in)
1923
47.5 mm (1.9 in)
1924
55.6 mm (2.2 in)
1925
76.9 mm (3.0 in)
1926
39.8 mm (1.6 in)
1927
45.7 mm (1.8 in)
1928
25.5 mm (1.0 in)
1929
39.3 mm (1.5 in)
1930
59.3 mm (2.3 in)
1931
79.3 mm (3.1 in)
1932
26.7 mm (1.1 in)
1933
35.8 mm (1.4 in)
1934
47.3 mm (1.9 in)
1935
48.0 mm (1.9 in)
1936
35.4 mm (1.4 in)
1937
40.4 mm (1.6 in)
1938
53.8 mm (2.1 in)
1939
45.3 mm (1.8 in)
1940
38.6 mm (1.5 in)
1941
49.3 mm (1.9 in)
1942
39.9 mm (1.6 in)
1943
65.5 mm (2.6 in)
1944
85.6 mm (3.4 in)
1945
120.6 mm (4.7 in)
1946
74.2 mm (2.9 in)
1947
42.1 mm (1.7 in)
1948
43.0 mm (1.7 in)
1949
51.1 mm (2.0 in)
1950
27.5 mm (1.1 in)
1951
50.3 mm (2.0 in)
1952
47.0 mm (1.9 in)
1953
53.8 mm (2.1 in)
1954
44.3 mm (1.7 in)
1955
53.4 mm (2.1 in)
1956
45.9 mm (1.8 in)
1957
61.7 mm (2.4 in)
1958
39.3 mm (1.5 in)
1959
56.4 mm (2.2 in)
1960
29.6 mm (1.2 in)
2006
60.4 mm (2.4 in)
2007
39.1 mm (1.5 in)
2008
51.0 mm (2.0 in)
2009
47.5 mm (1.9 in)
2012
43.6 mm (1.7 in)
2013
30.6 mm (1.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Spencer, 1915 to 2013. The record is 83 days in 1935, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Spencer by year
Year
Longest dry spell (CDD)
1915
13 days
1916
36 days
1917
45 days
1918
21 days
1919
60 days
1920
26 days
1921
34 days
1922
42 days
1923
35 days
1924
26 days
1925
13 days
1926
36 days
1927
24 days
1928
25 days
1929
13 days
1930
26 days
1931
20 days
1932
18 days
1933
44 days
1934
27 days
1935
83 days
1936
44 days
1937
27 days
1938
28 days
1939
23 days
1940
27 days
1941
26 days
1942
23 days
1943
56 days
1944
44 days
1945
38 days
1946
26 days
1947
19 days
1948
37 days
1949
36 days
1950
22 days
1951
34 days
1952
61 days
1953
42 days
1954
33 days
1955
31 days
1956
27 days
1957
22 days
1958
52 days
1959
39 days
1960
20 days
2006
26 days
2007
55 days
2008
34 days
2009
19 days
2012
27 days
2013
26 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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Spencer falls on 22 June and the median first autumn frost on 23 August, which leaves a median of 67 days between them.
Fitted over all years, the growing season changes by +2.0 days per decade at this station.
Frost dates and growing season at Spencer
Measure
Median, all years
Earliest period
Recent period (1918 to 2008)
Recent against earliest
Fitted trend
Last spring frost
22 June
n/a
22 June
n/a
-1.5 days per decade
First autumn frost
23 August
n/a
23 August
n/a
+0.5 days per decade
Growing days
67 days
n/a
67 days
n/a
+2.0 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
33 years, 1916 to 2008
A day with at least 28.5 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 77.8 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Spencer: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
28.5 mm (1.1 in)
5 years
37.1 mm (1.5 in)
10 years
44.3 mm (1.7 in)
25 years
55.5 mm (2.2 in)
50 years
65.7 mm (2.6 in)
Longer than the 33 years of record
100 years
77.8 mm (3.1 in)
Longer than the 33 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, 33 years of values from 1916 to 2008.
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: 75.4 mm (3.0 in) in 1918; 53.6 mm (2.1 in) in 1944; 45.2 mm (1.8 in) in 1959.
Download the Data
Data for Spencer standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Spencer 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.