Record envelope, standing records and threshold days for Hailey 3 NNW (USC00103942), Idaho, United States, with 96 years of record.
Key Facts for Hailey 3 NNW
Hailey 3 NNW (USC00103942) is a weather station in Idaho, United States at 43.57 latitude and -114.33 longitude, 1,653 m (5,424 ft) above sea level.
The station reports from 1893 to 1988, 96 years of record.
1,464 records set at Hailey 3 NNW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hailey 3 NNW set a daily record snowfall of 10.2 cm (4.0 in) on 6 May 1988.
About the Station
Location: Idaho, United States, 43.57 latitude, -114.33 longitude.
Elevation: 1,653 m (5,424 ft).
Period of record: 1893 to 1988, 96 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 Hailey 3 NNW. 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 Hailey 3 NNW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-35.6 C (-32.1 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
22.8 C (73.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-20.6 C (-5.1 F)
n/a
n/a
May
33.9 C (93.0 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
42.8 C (109.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jul
41.7 C (107.1 F)
-1.7 C (28.9 F)
n/a
n/a
Aug
40.0 C (104.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-16.1 C (3.0 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Dec
18.3 C (64.9 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 Hailey 3 NNW still stand. 1895 holds the most, with 67.
Standing records at Hailey 3 NNW by the year they were set
Year set
Standing records
1894
37
1895
67
1900
42
1901
19
1902
28
1903
2
1904
12
1905
13
1906
25
1907
5
1909
18
1910
28
1911
8
1912
8
1913
25
1914
9
1915
16
1916
22
1917
32
1918
24
1919
28
1920
9
1921
12
1922
26
1923
5
1924
28
1925
9
1926
13
1927
16
1928
6
1929
23
1930
17
1931
22
1932
20
1933
26
1934
45
1935
20
1936
25
1937
18
1938
7
1939
22
1940
12
1941
19
1942
20
1943
12
1944
9
1945
14
1946
7
1947
10
1948
15
1949
13
1950
22
1951
13
1952
14
1953
6
1954
22
1955
29
1956
18
1957
3
1958
15
1959
12
1960
24
1961
7
1962
12
1963
19
1964
17
1965
15
1966
17
1967
14
1968
21
1969
19
1970
16
1971
13
1972
21
1973
2
1974
12
1975
15
1976
9
1977
10
1978
17
1979
9
1980
15
1981
14
1984
3
1986
2
1987
14
1988
5
All-Time Record Progression
5 new records
5 all-time records were set at Hailey 3 NNW between 9 February 1933 and 12 January 1963. Each dot is a new record.
When Hailey 3 NNW set new all-time records
Date
Kind
Detail
1933-02-09
Record low minimum temperature
Record low minimum temperature -37.8 C (-36.0 F)
1937-12-11
Record daily precipitation
Record daily precipitation 65.0 mm (2.6 in)
1943-01-21
Record daily precipitation
Record daily precipitation 70.6 mm (2.8 in)
1956-02-20
Record daily snowfall
Record daily snowfall 53.3 cm (21.0 in)
1963-01-12
Record low maximum temperature
Record low maximum temperature -21.1 C (-6.0 F)
Wettest Day of Each Month
Jan: 70.6 mm (2.8 in)
The wettest day on record for each calendar month at Hailey 3 NNW. The most was 70.6 mm (2.8 in) on 21 January 1943.
Record daily precipitation for each month at Hailey 3 NNW
Month
Record daily precipitation (mm)
Date
Jan
70.6 mm (2.8 in)
21 January 1943
Feb
62.2 mm (2.4 in)
1 February 1963
Mar
41.9 mm (1.6 in)
10 March 1903
Apr
38.1 mm (1.5 in)
20 April 1981
May
40.6 mm (1.6 in)
12 May 1958
Jun
40.4 mm (1.6 in)
6 June 1968
Jul
32.0 mm (1.3 in)
2 July 1938
Aug
38.1 mm (1.5 in)
18 August 1912
Sep
38.1 mm (1.5 in)
13 September 1959
Oct
35.8 mm (1.4 in)
19 October 1979
Nov
42.4 mm (1.7 in)
9 November 1927
Dec
68.1 mm (2.7 in)
22 December 1964
Period of Record Coverage
1894 to 1988
Complete yearUnder 90 percent of days
89 years of record at Hailey 3 NNW, 1894 to 1988. 24 years have data for under 90 percent of days and are left out of rankings: 1894, 1895, 1900, 1902, 1903, 1904, 1905, 1906 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 58 complete years at Hailey 3 NNW, 1909 to 1981. Blue stripes are years cooler than the station's own mean of 6.3 C (43.3 F); red stripes are warmer. The coolest year was 1932, at 5.2 C (41.4 F), and the warmest was 1934, at 9.0 C (48.1 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Hailey 3 NNW as warming stripes, 1909 to 1981
Year
Annual mean temperature
Difference from the station mean
1909
6.0 C
-0.31 C
1910
7.3 C
+0.96 C
1911
5.3 C
-1.04 C
1912
5.6 C
-0.66 C
1913
5.6 C
-0.69 C
1914
6.4 C
+0.08 C
1915
6.8 C
+0.50 C
1916
5.4 C
-0.86 C
1917
5.9 C
-0.42 C
1918
6.8 C
+0.54 C
1919
6.6 C
+0.27 C
1920
5.8 C
-0.50 C
1921
6.2 C
-0.14 C
1922
5.4 C
-0.90 C
1923
5.7 C
-0.59 C
1924
6.5 C
+0.19 C
1925
6.8 C
+0.48 C
1926
6.9 C
+0.63 C
1927
5.4 C
-0.87 C
1928
5.8 C
-0.46 C
1929
5.6 C
-0.74 C
1930
6.2 C
-0.13 C
1931
6.6 C
+0.29 C
1932
5.2 C
-1.10 C
1933
6.2 C
-0.10 C
1934
9.0 C
+2.66 C
1935
5.8 C
-0.46 C
1936
6.7 C
+0.36 C
1937
6.3 C
+0.01 C
1938
6.4 C
+0.05 C
1939
7.5 C
+1.18 C
1940
7.7 C
+1.35 C
1941
7.2 C
+0.87 C
1942
6.2 C
-0.15 C
1943
7.0 C
+0.71 C
1944
6.1 C
-0.19 C
1945
6.2 C
-0.13 C
1946
6.4 C
+0.13 C
1947
7.0 C
+0.67 C
1948
5.9 C
-0.38 C
1949
6.5 C
+0.21 C
1950
6.4 C
+0.10 C
1951
5.5 C
-0.80 C
1952
6.1 C
-0.23 C
1954
6.2 C
-0.12 C
1957
5.9 C
-0.45 C
1958
6.9 C
+0.55 C
1959
6.0 C
-0.32 C
1960
5.8 C
-0.49 C
1961
6.4 C
+0.10 C
1962
6.0 C
-0.33 C
1965
5.9 C
-0.38 C
1966
6.7 C
+0.44 C
1967
6.5 C
+0.15 C
1970
6.2 C
-0.07 C
1971
5.6 C
-0.74 C
1979
6.5 C
+0.24 C
1981
7.3 C
+1.02 C
The fitted trend in annual mean temperature here over 1909 to 1981 is 0.04 C (-0.05 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 0.2) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hailey 3 NNW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.05 to 0.14) per decade
0.1 F (-0.1 to 0.2) per decade
1909 to 1981
58
Not clearly different from zero
Mean daily maximum
0.00 C (-0.12 to 0.12) per decade
0.00 F (-0.21 to 0.21) per decade
1909 to 1981
58
Not clearly different from zero
Mean daily minimum
0.09 C (-0.01 to 0.19) per decade
0.16 F (-0.03 to 0.34) per decade
1909 to 1981
58
Not clearly different from zero
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
1893 to 1988
Yearly extremes at Hailey 3 NNW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1900
35.0 C (95.0 F)
89
Coldest night (TNn)
-37.8 C (-36.0 F)
1933
-26.1 C (-15.0 F)
89
Wettest day (Rx1day)
70.6 mm (2.8 in)
1943
31.0 mm (1.2 in)
89
Wettest five days (Rx5day)
196.9 mm (7.8 in)
1964
52.9 mm (2.1 in)
89
Longest dry spell (CDD)
116 days
1942
42 days
89
Hottest day (TXx)
The hottest day of the year at Hailey 3 NNW, 1893 to 1988. The record is 42.8 C (109.0 F) in 1900, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Hailey 3 NNW by year
Year
Hottest day (TXx)
1893
n/a
1894
40.0 C (104.0 F)
1895
37.8 C (100.0 F)
1900
42.8 C (109.0 F)
1901
37.8 C (100.0 F)
1902
37.2 C (99.0 F)
1903
9.4 C (48.9 F)
1904
37.2 C (99.0 F)
1905
35.0 C (95.0 F)
1906
21.1 C (70.0 F)
1907
28.3 C (82.9 F)
1908
6.7 C (44.1 F)
1909
36.1 C (97.0 F)
1910
36.7 C (98.1 F)
1911
35.6 C (96.1 F)
1912
35.0 C (95.0 F)
1913
34.4 C (93.9 F)
1914
33.9 C (93.0 F)
1915
35.6 C (96.1 F)
1916
33.9 C (93.0 F)
1917
35.6 C (96.1 F)
1918
35.0 C (95.0 F)
1919
37.8 C (100.0 F)
1920
35.0 C (95.0 F)
1921
35.6 C (96.1 F)
1922
35.0 C (95.0 F)
1923
35.6 C (96.1 F)
1924
36.1 C (97.0 F)
1925
36.7 C (98.1 F)
1926
35.6 C (96.1 F)
1927
34.4 C (93.9 F)
1928
36.7 C (98.1 F)
1929
36.1 C (97.0 F)
1930
35.6 C (96.1 F)
1931
37.8 C (100.0 F)
1932
33.9 C (93.0 F)
1933
37.2 C (99.0 F)
1934
39.4 C (102.9 F)
1935
36.7 C (98.1 F)
1936
38.3 C (100.9 F)
1937
35.6 C (96.1 F)
1938
33.3 C (91.9 F)
1939
38.9 C (102.0 F)
1940
37.8 C (100.0 F)
1941
35.0 C (95.0 F)
1942
35.0 C (95.0 F)
1943
36.1 C (97.0 F)
1944
32.8 C (91.0 F)
1945
35.0 C (95.0 F)
1946
35.6 C (96.1 F)
1947
35.6 C (96.1 F)
1948
35.0 C (95.0 F)
1949
36.7 C (98.1 F)
1950
35.6 C (96.1 F)
1951
35.6 C (96.1 F)
1952
33.3 C (91.9 F)
1953
37.8 C (100.0 F)
1954
35.0 C (95.0 F)
1955
35.0 C (95.0 F)
1956
34.4 C (93.9 F)
1957
32.2 C (90.0 F)
1958
34.4 C (93.9 F)
1959
36.1 C (97.0 F)
1960
36.7 C (98.1 F)
1961
36.7 C (98.1 F)
1962
34.4 C (93.9 F)
1963
33.3 C (91.9 F)
1964
34.4 C (93.9 F)
1965
32.8 C (91.0 F)
1966
34.4 C (93.9 F)
1967
34.4 C (93.9 F)
1968
34.4 C (93.9 F)
1969
35.0 C (95.0 F)
1970
33.3 C (91.9 F)
1971
36.1 C (97.0 F)
1972
35.0 C (95.0 F)
1973
35.6 C (96.1 F)
1974
36.7 C (98.1 F)
1975
35.6 C (96.1 F)
1976
35.0 C (95.0 F)
1977
35.0 C (95.0 F)
1978
33.9 C (93.0 F)
1979
34.4 C (93.9 F)
1980
31.7 C (89.1 F)
1981
34.4 C (93.9 F)
1982
5.6 C (42.1 F)
1984
30.0 C (86.0 F)
1986
28.9 C (84.0 F)
1987
32.2 C (90.0 F)
1988
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Hailey 3 NNW, 1893 to 1988. The record is -37.8 C (-36.0 F) in 1933, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Hailey 3 NNW by year
Year
Coldest night (TNn)
1893
n/a
1894
-22.2 C (-8.0 F)
1895
-30.0 C (-22.0 F)
1900
-11.1 C (12.0 F)
1901
-22.2 C (-8.0 F)
1902
-31.7 C (-25.1 F)
1903
-19.4 C (-2.9 F)
1904
-10.6 C (12.9 F)
1905
-24.4 C (-11.9 F)
1906
-25.0 C (-13.0 F)
1907
-1.7 C (28.9 F)
1908
-15.6 C (3.9 F)
1909
-21.7 C (-7.1 F)
1910
-27.2 C (-17.0 F)
1911
-23.9 C (-11.0 F)
1912
-27.8 C (-18.0 F)
1913
-29.4 C (-20.9 F)
1914
-26.1 C (-15.0 F)
1915
-26.7 C (-16.1 F)
1916
-26.7 C (-16.1 F)
1917
-27.2 C (-17.0 F)
1918
-25.0 C (-13.0 F)
1919
-32.2 C (-26.0 F)
1920
-22.8 C (-9.0 F)
1921
-23.9 C (-11.0 F)
1922
-32.8 C (-27.0 F)
1923
-26.7 C (-16.1 F)
1924
-30.0 C (-22.0 F)
1925
-23.9 C (-11.0 F)
1926
-24.4 C (-11.9 F)
1927
-27.8 C (-18.0 F)
1928
-26.7 C (-16.1 F)
1929
-30.0 C (-22.0 F)
1930
-30.0 C (-22.0 F)
1931
-25.6 C (-14.1 F)
1932
-30.0 C (-22.0 F)
1933
-37.8 C (-36.0 F)
1934
-21.1 C (-6.0 F)
1935
-33.9 C (-29.0 F)
1936
-30.0 C (-22.0 F)
1937
-35.6 C (-32.1 F)
1938
-21.7 C (-7.1 F)
1939
-23.3 C (-9.9 F)
1940
-23.3 C (-9.9 F)
1941
-26.1 C (-15.0 F)
1942
-31.7 C (-25.1 F)
1943
-28.9 C (-20.0 F)
1944
-21.7 C (-7.1 F)
1945
-26.1 C (-15.0 F)
1946
-23.9 C (-11.0 F)
1947
-25.0 C (-13.0 F)
1948
-25.6 C (-14.1 F)
1949
-32.8 C (-27.0 F)
1950
-30.0 C (-22.0 F)
1951
-31.7 C (-25.1 F)
1952
-27.2 C (-17.0 F)
1953
-21.1 C (-6.0 F)
1954
-22.8 C (-9.0 F)
1955
-32.8 C (-27.0 F)
1956
-30.6 C (-23.1 F)
1957
-27.8 C (-18.0 F)
1958
-23.3 C (-9.9 F)
1959
-30.0 C (-22.0 F)
1960
-26.7 C (-16.1 F)
1961
-25.6 C (-14.1 F)
1962
-32.8 C (-27.0 F)
1963
-33.3 C (-27.9 F)
1964
-31.7 C (-25.1 F)
1965
-22.2 C (-8.0 F)
1966
-23.3 C (-9.9 F)
1967
-28.9 C (-20.0 F)
1968
-26.1 C (-15.0 F)
1969
-24.4 C (-11.9 F)
1970
-25.0 C (-13.0 F)
1971
-32.2 C (-26.0 F)
1972
-31.7 C (-25.1 F)
1973
-23.3 C (-9.9 F)
1974
-28.3 C (-18.9 F)
1975
-29.4 C (-20.9 F)
1976
-22.2 C (-8.0 F)
1977
-27.8 C (-18.0 F)
1978
-28.3 C (-18.9 F)
1979
-28.9 C (-20.0 F)
1980
-26.1 C (-15.0 F)
1981
-23.9 C (-11.0 F)
1982
-26.1 C (-15.0 F)
1984
-8.9 C (16.0 F)
1986
-17.2 C (1.0 F)
1987
-26.7 C (-16.1 F)
1988
-22.2 C (-8.0 F)
Wettest day (Rx1day)
The wettest day of the year at Hailey 3 NNW, 1893 to 1988. The record is 70.6 mm (2.8 in) in 1943, marked on the chart; the median year is 31.0 mm (1.2 in).
Wettest day (Rx1day) at Hailey 3 NNW by year
Year
Wettest day (Rx1day)
1893
n/a
1894
18.8 mm (0.7 in)
1895
36.1 mm (1.4 in)
1900
33.3 mm (1.3 in)
1901
29.2 mm (1.1 in)
1902
29.0 mm (1.1 in)
1903
41.9 mm (1.6 in)
1904
18.5 mm (0.7 in)
1905
15.7 mm (0.6 in)
1906
33.0 mm (1.3 in)
1907
15.2 mm (0.6 in)
1908
50.8 mm (2.0 in)
1909
24.1 mm (0.9 in)
1910
16.0 mm (0.6 in)
1911
36.1 mm (1.4 in)
1912
38.1 mm (1.5 in)
1913
30.5 mm (1.2 in)
1914
34.3 mm (1.4 in)
1915
32.8 mm (1.3 in)
1916
25.9 mm (1.0 in)
1917
46.2 mm (1.8 in)
1918
22.9 mm (0.9 in)
1919
30.5 mm (1.2 in)
1920
30.5 mm (1.2 in)
1921
35.6 mm (1.4 in)
1922
37.6 mm (1.5 in)
1923
22.4 mm (0.9 in)
1924
26.7 mm (1.1 in)
1925
31.0 mm (1.2 in)
1926
25.4 mm (1.0 in)
1927
42.4 mm (1.7 in)
1928
23.4 mm (0.9 in)
1929
52.6 mm (2.1 in)
1930
19.3 mm (0.8 in)
1931
43.2 mm (1.7 in)
1932
21.8 mm (0.9 in)
1933
23.1 mm (0.9 in)
1934
19.6 mm (0.8 in)
1935
31.8 mm (1.3 in)
1936
28.4 mm (1.1 in)
1937
65.0 mm (2.6 in)
1938
32.0 mm (1.3 in)
1939
20.3 mm (0.8 in)
1940
33.3 mm (1.3 in)
1941
35.6 mm (1.4 in)
1942
25.7 mm (1.0 in)
1943
70.6 mm (2.8 in)
1944
29.2 mm (1.1 in)
1945
46.7 mm (1.8 in)
1946
38.1 mm (1.5 in)
1947
21.6 mm (0.9 in)
1948
22.1 mm (0.9 in)
1949
30.7 mm (1.2 in)
1950
27.2 mm (1.1 in)
1951
31.2 mm (1.2 in)
1952
48.8 mm (1.9 in)
1953
14.0 mm (0.6 in)
1954
29.0 mm (1.1 in)
1955
60.7 mm (2.4 in)
1956
31.0 mm (1.2 in)
1957
25.1 mm (1.0 in)
1958
40.6 mm (1.6 in)
1959
38.1 mm (1.5 in)
1960
47.0 mm (1.9 in)
1961
26.9 mm (1.1 in)
1962
38.6 mm (1.5 in)
1963
62.2 mm (2.4 in)
1964
68.1 mm (2.7 in)
1965
30.5 mm (1.2 in)
1966
45.5 mm (1.8 in)
1967
41.9 mm (1.6 in)
1968
40.4 mm (1.6 in)
1969
44.5 mm (1.8 in)
1970
46.7 mm (1.8 in)
1971
28.7 mm (1.1 in)
1972
15.7 mm (0.6 in)
1973
30.0 mm (1.2 in)
1974
15.2 mm (0.6 in)
1975
31.8 mm (1.3 in)
1976
37.8 mm (1.5 in)
1977
35.8 mm (1.4 in)
1978
26.9 mm (1.1 in)
1979
35.8 mm (1.4 in)
1980
14.7 mm (0.6 in)
1981
38.1 mm (1.5 in)
1982
27.9 mm (1.1 in)
1984
10.2 mm (0.4 in)
1986
9.7 mm (0.38 in)
1987
38.1 mm (1.5 in)
1988
25.1 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hailey 3 NNW, 1893 to 1988. The record is 196.9 mm (7.8 in) in 1964, marked on the chart; the median year is 52.9 mm (2.1 in).
Wettest five days (Rx5day) at Hailey 3 NNW by year
Year
Wettest five days (Rx5day)
1893
n/a
1894
39.9 mm (1.6 in)
1895
53.9 mm (2.1 in)
1900
34.3 mm (1.4 in)
1901
85.6 mm (3.4 in)
1902
55.4 mm (2.2 in)
1903
63.3 mm (2.5 in)
1904
31.6 mm (1.2 in)
1905
28.4 mm (1.1 in)
1906
80.6 mm (3.2 in)
1907
15.2 mm (0.6 in)
1908
0.0 mm (0.00 in)
1909
54.2 mm (2.1 in)
1910
40.4 mm (1.6 in)
1911
62.5 mm (2.5 in)
1912
39.4 mm (1.6 in)
1913
43.9 mm (1.7 in)
1914
58.7 mm (2.3 in)
1915
45.3 mm (1.8 in)
1916
53.3 mm (2.1 in)
1917
95.8 mm (3.8 in)
1918
41.6 mm (1.6 in)
1919
60.8 mm (2.4 in)
1920
50.6 mm (2.0 in)
1921
65.0 mm (2.6 in)
1922
49.6 mm (2.0 in)
1923
42.5 mm (1.7 in)
1924
39.4 mm (1.6 in)
1925
74.9 mm (2.9 in)
1926
60.8 mm (2.4 in)
1927
69.5 mm (2.7 in)
1928
30.7 mm (1.2 in)
1929
113.6 mm (4.5 in)
1930
36.3 mm (1.4 in)
1931
106.3 mm (4.2 in)
1932
52.9 mm (2.1 in)
1933
58.4 mm (2.3 in)
1934
30.8 mm (1.2 in)
1935
50.4 mm (2.0 in)
1936
50.8 mm (2.0 in)
1937
99.3 mm (3.9 in)
1938
69.9 mm (2.8 in)
1939
27.4 mm (1.1 in)
1940
60.1 mm (2.4 in)
1941
73.2 mm (2.9 in)
1942
60.0 mm (2.4 in)
1943
147.2 mm (5.8 in)
1944
50.6 mm (2.0 in)
1945
74.6 mm (2.9 in)
1946
74.1 mm (2.9 in)
1947
21.9 mm (0.9 in)
1948
48.0 mm (1.9 in)
1949
60.4 mm (2.4 in)
1950
54.3 mm (2.1 in)
1951
59.4 mm (2.3 in)
1952
67.4 mm (2.7 in)
1953
40.9 mm (1.6 in)
1954
47.3 mm (1.9 in)
1955
150.5 mm (5.9 in)
1956
34.8 mm (1.4 in)
1957
49.8 mm (2.0 in)
1958
43.9 mm (1.7 in)
1959
52.2 mm (2.1 in)
1960
49.5 mm (1.9 in)
1961
43.1 mm (1.7 in)
1962
90.6 mm (3.6 in)
1963
100.1 mm (3.9 in)
1964
196.9 mm (7.8 in)
1965
60.2 mm (2.4 in)
1966
95.5 mm (3.8 in)
1967
92.0 mm (3.6 in)
1968
60.7 mm (2.4 in)
1969
115.3 mm (4.5 in)
1970
79.6 mm (3.1 in)
1971
38.9 mm (1.5 in)
1972
36.4 mm (1.4 in)
1973
59.0 mm (2.3 in)
1974
40.7 mm (1.6 in)
1975
66.6 mm (2.6 in)
1976
43.1 mm (1.7 in)
1977
35.1 mm (1.4 in)
1978
64.2 mm (2.5 in)
1979
46.7 mm (1.8 in)
1980
19.1 mm (0.8 in)
1981
38.1 mm (1.5 in)
1982
27.9 mm (1.1 in)
1984
10.2 mm (0.4 in)
1986
22.4 mm (0.9 in)
1987
71.6 mm (2.8 in)
1988
28.9 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hailey 3 NNW, 1893 to 1988. The record is 116 days in 1942, marked on the chart; the median year is 42 days.
Longest dry spell (CDD) at Hailey 3 NNW by year
Year
Longest dry spell (CDD)
1893
n/a
1894
35 days
1895
42 days
1900
39 days
1901
55 days
1902
80 days
1903
3 days
1904
28 days
1905
32 days
1906
9 days
1907
15 days
1908
22 days
1909
31 days
1910
54 days
1911
92 days
1912
29 days
1913
46 days
1914
41 days
1915
49 days
1916
43 days
1917
66 days
1918
23 days
1919
60 days
1920
32 days
1921
36 days
1922
49 days
1923
31 days
1924
78 days
1925
20 days
1926
30 days
1927
26 days
1928
38 days
1929
46 days
1930
25 days
1931
32 days
1932
35 days
1933
30 days
1934
42 days
1935
79 days
1936
68 days
1937
57 days
1938
28 days
1939
51 days
1940
76 days
1941
30 days
1942
116 days
1943
93 days
1944
28 days
1945
48 days
1946
35 days
1947
69 days
1948
66 days
1949
64 days
1950
46 days
1951
37 days
1952
71 days
1953
101 days
1954
51 days
1955
56 days
1956
40 days
1957
73 days
1958
40 days
1959
42 days
1960
85 days
1961
54 days
1962
29 days
1963
41 days
1964
37 days
1965
59 days
1966
42 days
1967
44 days
1968
35 days
1969
65 days
1970
30 days
1971
28 days
1972
26 days
1973
31 days
1974
60 days
1975
43 days
1976
31 days
1977
48 days
1978
52 days
1979
58 days
1980
27 days
1981
45 days
1982
14 days
1984
14 days
1986
29 days
1987
43 days
1988
64 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
58 years with a frost
Across 58 years with a frost, the median last spring frost at Hailey 3 NNW falls on 11 June and the median first autumn frost on 9 September, which leaves a median of 90 days between them.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
Frost dates and growing season at Hailey 3 NNW
Measure
Median, all years
Earliest period
Recent period (1937 to 1981)
Recent against earliest
Fitted trend
Last spring frost
11 June
n/a
15 June
n/a
+0.7 days per decade
First autumn frost
9 September
n/a
9 September
n/a
+1.8 days per decade
Growing days
90 days
n/a
94 days
n/a
+1.1 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
64 years, 1901 to 1979
A day with at least 32.3 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 77.3 mm (3.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Hailey 3 NNW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
32.3 mm (1.3 in)
5 years
43.1 mm (1.7 in)
10 years
50.8 mm (2.0 in)
25 years
61.0 mm (2.4 in)
50 years
69.0 mm (2.7 in)
100 years
77.3 mm (3.0 in)
Longer than the 64 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, 64 years of values from 1901 to 1979.
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: 70.6 mm (2.8 in) in 1943; 68.1 mm (2.7 in) in 1964; 65.0 mm (2.6 in) in 1937.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Hailey 3 NNW, at 1954. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1954 ran 0.3 C (0.6 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Hailey 3 NNW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1954
-0.3
-0.6
possible
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.
Download the Data
Data for Hailey 3 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hailey 3 NNW 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.