Record envelope, standing records and threshold days for Blair (USC00470882), Wisconsin, United States, with 85 years of record.
Key Facts for Blair
Blair (USC00470882) is a weather station in Wisconsin, United States at 44.29 latitude and -91.23 longitude, 261 m (855 ft) above sea level.
The station reports from 1925 to 2009, 85 years of record.
1,464 records set at Blair still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Blair set a daily record low maximum temperature of 13.9 C (57.0 F) on 9 June 2009.
About the Station
Location: Wisconsin, United States, 44.29 latitude, -91.23 longitude.
Elevation: 261 m (855 ft).
Period of record: 1925 to 2009, 85 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 Blair. 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 Blair, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.4 C (57.9 F)
-41.7 C (-43.1 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-42.8 C (-45.0 F)
n/a
n/a
Mar
28.3 C (82.9 F)
-36.1 C (-33.0 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-20.0 C (-4.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
41.7 C (107.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-17.2 C (1.0 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-27.8 C (-18.0 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-39.4 C (-38.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Blair still stand. 1930 holds the most, with 44.
Standing records at Blair by the year they were set
Year set
Standing records
1925
25
1926
15
1927
17
1928
9
1929
27
1930
44
1931
32
1932
22
1933
23
1934
41
1935
19
1936
42
1937
27
1938
15
1939
21
1940
27
1941
22
1942
20
1943
15
1944
13
1945
15
1946
11
1947
26
1948
27
1949
13
1950
17
1951
15
1952
21
1953
28
1954
12
1955
14
1956
22
1957
9
1958
6
1959
15
1960
13
1961
3
1962
24
1963
17
1964
29
1965
18
1966
13
1967
18
1968
15
1969
11
1970
8
1971
17
1972
27
1973
18
1974
19
1975
10
1976
25
1977
20
1978
7
1979
9
1980
10
1981
13
1982
12
1983
20
1984
12
1985
19
1986
13
1987
14
1988
14
1989
16
1990
19
1991
28
1992
13
1993
6
1994
12
1995
12
1996
16
1997
13
1998
21
1999
8
2000
22
2001
17
2002
16
2003
10
2004
11
2005
5
2006
15
2007
16
2008
7
2009
6
All-Time Record Progression
4 new records
4 all-time records were set at Blair between 29 January 1966 and 20 January 1985. Each dot is a new record.
When Blair set new all-time records
Date
Kind
Detail
1966-01-29
Record low maximum temperature
Record low maximum temperature -25.6 C (-14.1 F)
1975-08-23
Record daily precipitation
Record daily precipitation 154.4 mm (6.1 in)
1982-01-17
Record low maximum temperature
Record low maximum temperature -26.7 C (-16.1 F)
1985-01-20
Record low maximum temperature
Record low maximum temperature -27.2 C (-17.0 F)
Wettest Day of Each Month
Aug: 154.4 mm (6.1 in)
The wettest day on record for each calendar month at Blair. The most was 154.4 mm (6.1 in) on 23 August 1975.
Record daily precipitation for each month at Blair
Month
Record daily precipitation (mm)
Date
Jan
45.7 mm (1.8 in)
22 January 1933
Feb
56.4 mm (2.2 in)
8 February 1999
Mar
44.2 mm (1.7 in)
23 March 1966
Apr
71.6 mm (2.8 in)
24 April 1990
May
88.4 mm (3.5 in)
1 May 1954
Jun
95.0 mm (3.7 in)
27 June 1998
Jul
105.9 mm (4.2 in)
1 July 1978
Aug
154.4 mm (6.1 in)
23 August 1975
Sep
144.5 mm (5.7 in)
14 September 1994
Oct
114.3 mm (4.5 in)
20 October 1982
Nov
62.5 mm (2.5 in)
10 November 1975
Dec
45.7 mm (1.8 in)
7 December 1927
Period of Record Coverage
1925 to 2009
Complete yearUnder 90 percent of days
85 years of record at Blair, 1925 to 2009. 5 years have data for under 90 percent of days and are left out of rankings: 1925, 1926, 1927, 1928, 2009.
Cooler than the station meanWarmer than the station mean
One stripe for each of 78 complete years at Blair, 1930 to 2008. Blue stripes are years cooler than the station's own mean of 6.7 C (44.1 F); red stripes are warmer. The coolest year was 1979, at 4.8 C (40.7 F), and the warmest was 1931, at 8.9 C (48.0 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Blair as warming stripes, 1930 to 2008
Year
Annual mean temperature
Difference from the station mean
1930
7.1 C
+0.32 C
1931
8.9 C
+2.17 C
1932
6.1 C
-0.64 C
1933
6.9 C
+0.15 C
1934
7.6 C
+0.86 C
1935
6.3 C
-0.42 C
1936
5.8 C
-0.91 C
1937
5.7 C
-1.08 C
1938
7.8 C
+1.05 C
1939
7.4 C
+0.69 C
1940
6.0 C
-0.71 C
1941
8.0 C
+1.31 C
1942
6.4 C
-0.30 C
1943
5.5 C
-1.20 C
1944
7.6 C
+0.90 C
1945
6.5 C
-0.19 C
1946
8.0 C
+1.31 C
1947
7.2 C
+0.46 C
1948
7.5 C
+0.80 C
1949
8.0 C
+1.27 C
1950
5.6 C
-1.11 C
1951
5.5 C
-1.20 C
1952
7.2 C
+0.51 C
1953
8.0 C
+1.25 C
1954
7.8 C
+1.05 C
1955
7.5 C
+0.75 C
1956
7.2 C
+0.50 C
1957
7.5 C
+0.74 C
1958
7.2 C
+0.49 C
1959
7.2 C
+0.49 C
1960
7.3 C
+0.59 C
1961
7.5 C
+0.76 C
1962
7.0 C
+0.24 C
1963
7.2 C
+0.49 C
1964
8.3 C
+1.60 C
1965
6.7 C
-0.02 C
1966
6.5 C
-0.23 C
1967
6.2 C
-0.51 C
1968
7.3 C
+0.56 C
1969
5.9 C
-0.86 C
1970
6.2 C
-0.51 C
1971
6.4 C
-0.36 C
1972
5.5 C
-1.27 C
1973
7.3 C
+0.53 C
1974
6.0 C
-0.71 C
1975
6.0 C
-0.77 C
1976
5.5 C
-1.25 C
1977
6.2 C
-0.50 C
1978
5.0 C
-1.72 C
1979
4.8 C
-1.89 C
1980
6.0 C
-0.78 C
1981
6.7 C
-0.07 C
1982
5.5 C
-1.22 C
1983
6.6 C
-0.17 C
1984
6.6 C
-0.09 C
1985
5.5 C
-1.20 C
1986
6.6 C
-0.17 C
1987
8.4 C
+1.68 C
1988
6.6 C
-0.09 C
1989
5.3 C
-1.41 C
1990
7.3 C
+0.55 C
1991
6.6 C
-0.11 C
1992
6.5 C
-0.28 C
1993
5.6 C
-1.17 C
1994
6.5 C
-0.25 C
1995
6.5 C
-0.19 C
1996
4.9 C
-1.81 C
1997
6.2 C
-0.49 C
1998
8.6 C
+1.87 C
1999
7.4 C
+0.67 C
2000
6.6 C
-0.18 C
2001
8.1 C
+1.34 C
2002
7.1 C
+0.34 C
2003
6.3 C
-0.48 C
2004
6.7 C
-0.08 C
2005
7.1 C
+0.41 C
2006
7.9 C
+1.19 C
2008
5.2 C
-1.51 C
The fitted trend in annual mean temperature here over 1930 to 2008 is -0.08 C (-0.17 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.15 F (-0.31 to 0.02) per decade. The slope is a straight line fitted to 78 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Blair
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.08 C (-0.17 to 0.01) per decade
-0.15 F (-0.31 to 0.02) per decade
1930 to 2008
78
Not clearly different from zero
Mean daily maximum
-0.09 C (-0.18 to 0.01) per decade
-0.16 F (-0.33 to 0.01) per decade
1930 to 2008
78
Not clearly different from zero
Mean daily minimum
-0.07 C (-0.18 to 0.03) per decade
-0.1 F (-0.3 to 0.1) per decade
1930 to 2008
78
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
1925 to 2009
Yearly extremes at Blair: 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)
1936
35.6 C (96.1 F)
85
Coldest night (TNn)
-42.8 C (-45.0 F)
1936
-32.8 C (-27.0 F)
85
Wettest day (Rx1day)
154.4 mm (6.1 in)
1975
59.9 mm (2.4 in)
85
Wettest five days (Rx5day)
207.7 mm (8.2 in)
1975
91.6 mm (3.6 in)
85
Longest dry spell (CDD)
55 days
1953
22 days
85
Hottest day (TXx)
The hottest day of the year at Blair, 1925 to 2009. The record is 42.8 C (109.0 F) in 1936, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Blair by year
Year
Hottest day (TXx)
1925
35.6 C (96.1 F)
1926
35.6 C (96.1 F)
1927
37.2 C (99.0 F)
1928
32.2 C (90.0 F)
1929
35.6 C (96.1 F)
1930
37.8 C (100.0 F)
1931
37.8 C (100.0 F)
1932
37.2 C (99.0 F)
1933
38.3 C (100.9 F)
1934
41.7 C (107.1 F)
1935
34.4 C (93.9 F)
1936
42.8 C (109.0 F)
1937
37.2 C (99.0 F)
1938
34.4 C (93.9 F)
1939
36.7 C (98.1 F)
1940
37.2 C (99.0 F)
1941
35.6 C (96.1 F)
1942
35.0 C (95.0 F)
1943
36.1 C (97.0 F)
1944
37.2 C (99.0 F)
1945
34.4 C (93.9 F)
1946
33.9 C (93.0 F)
1947
37.8 C (100.0 F)
1948
40.6 C (105.1 F)
1949
37.2 C (99.0 F)
1950
32.8 C (91.0 F)
1951
33.3 C (91.9 F)
1952
33.9 C (93.0 F)
1953
36.1 C (97.0 F)
1954
33.9 C (93.0 F)
1955
37.8 C (100.0 F)
1956
35.6 C (96.1 F)
1957
35.0 C (95.0 F)
1958
35.6 C (96.1 F)
1959
33.9 C (93.0 F)
1960
35.6 C (96.1 F)
1961
33.9 C (93.0 F)
1962
32.2 C (90.0 F)
1963
36.7 C (98.1 F)
1964
40.0 C (104.0 F)
1965
36.1 C (97.0 F)
1966
38.3 C (100.9 F)
1967
33.3 C (91.9 F)
1968
33.3 C (91.9 F)
1969
33.3 C (91.9 F)
1970
34.4 C (93.9 F)
1971
34.4 C (93.9 F)
1972
36.1 C (97.0 F)
1973
33.9 C (93.0 F)
1974
37.2 C (99.0 F)
1975
32.8 C (91.0 F)
1976
35.6 C (96.1 F)
1977
36.1 C (97.0 F)
1978
35.6 C (96.1 F)
1979
31.1 C (88.0 F)
1980
35.6 C (96.1 F)
1981
32.8 C (91.0 F)
1982
35.0 C (95.0 F)
1983
36.1 C (97.0 F)
1984
35.0 C (95.0 F)
1985
35.6 C (96.1 F)
1986
33.9 C (93.0 F)
1987
36.1 C (97.0 F)
1988
38.3 C (100.9 F)
1989
35.0 C (95.0 F)
1990
35.6 C (96.1 F)
1991
34.4 C (93.9 F)
1992
33.9 C (93.0 F)
1993
32.2 C (90.0 F)
1994
34.4 C (93.9 F)
1995
40.6 C (105.1 F)
1996
35.0 C (95.0 F)
1997
33.9 C (93.0 F)
1998
32.8 C (91.0 F)
1999
37.2 C (99.0 F)
2000
33.3 C (91.9 F)
2001
38.3 C (100.9 F)
2002
36.1 C (97.0 F)
2003
36.1 C (97.0 F)
2004
31.7 C (89.1 F)
2005
36.7 C (98.1 F)
2006
36.1 C (97.0 F)
2007
33.9 C (93.0 F)
2008
32.2 C (90.0 F)
2009
34.4 C (93.9 F)
Coldest night (TNn)
The coldest night of the year at Blair, 1925 to 2009. The record is -42.8 C (-45.0 F) in 1936, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Blair by year
Year
Coldest night (TNn)
1925
-25.6 C (-14.1 F)
1926
-31.7 C (-25.1 F)
1927
-40.6 C (-41.1 F)
1928
-37.8 C (-36.0 F)
1929
-41.7 C (-43.1 F)
1930
-40.6 C (-41.1 F)
1931
-27.8 C (-18.0 F)
1932
-36.1 C (-33.0 F)
1933
-37.2 C (-35.0 F)
1934
-30.0 C (-22.0 F)
1935
-41.1 C (-42.0 F)
1936
-42.8 C (-45.0 F)
1937
-41.1 C (-42.0 F)
1938
-32.2 C (-26.0 F)
1939
-26.7 C (-16.1 F)
1940
-38.3 C (-36.9 F)
1941
-27.8 C (-18.0 F)
1942
-32.8 C (-27.0 F)
1943
-32.8 C (-27.0 F)
1944
-26.7 C (-16.1 F)
1945
-29.4 C (-20.9 F)
1946
-33.9 C (-29.0 F)
1947
-32.2 C (-26.0 F)
1948
-34.4 C (-29.9 F)
1949
-31.7 C (-25.1 F)
1950
-35.0 C (-31.0 F)
1951
-41.7 C (-43.1 F)
1952
-33.3 C (-27.9 F)
1953
-26.1 C (-15.0 F)
1954
-31.1 C (-24.0 F)
1955
-30.6 C (-23.1 F)
1956
-30.6 C (-23.1 F)
1957
-31.1 C (-24.0 F)
1958
-28.3 C (-18.9 F)
1959
-32.8 C (-27.0 F)
1960
-26.7 C (-16.1 F)
1961
-29.4 C (-20.9 F)
1962
-36.1 C (-33.0 F)
1963
-37.8 C (-36.0 F)
1964
-27.8 C (-18.0 F)
1965
-37.8 C (-36.0 F)
1966
-32.8 C (-27.0 F)
1967
-38.9 C (-38.0 F)
1968
-37.2 C (-35.0 F)
1969
-32.8 C (-27.0 F)
1970
-40.6 C (-41.1 F)
1971
-39.4 C (-38.9 F)
1972
-33.3 C (-27.9 F)
1973
-33.9 C (-29.0 F)
1974
-33.9 C (-29.0 F)
1975
-33.3 C (-27.9 F)
1976
-34.4 C (-29.9 F)
1977
-40.0 C (-40.0 F)
1978
-32.2 C (-26.0 F)
1979
-37.2 C (-35.0 F)
1980
-28.3 C (-18.9 F)
1981
-27.8 C (-18.0 F)
1982
-37.2 C (-35.0 F)
1983
-39.4 C (-38.9 F)
1984
-33.9 C (-29.0 F)
1985
-35.0 C (-31.0 F)
1986
-33.9 C (-29.0 F)
1987
-28.9 C (-20.0 F)
1988
-32.2 C (-26.0 F)
1989
-31.1 C (-24.0 F)
1990
-35.0 C (-31.0 F)
1991
-32.8 C (-27.0 F)
1992
-26.7 C (-16.1 F)
1993
-28.9 C (-20.0 F)
1994
-38.3 C (-36.9 F)
1995
-25.6 C (-14.1 F)
1996
-42.8 C (-45.0 F)
1997
-30.0 C (-22.0 F)
1998
-28.3 C (-18.9 F)
1999
-31.7 C (-25.1 F)
2000
-33.9 C (-29.0 F)
2001
-25.0 C (-13.0 F)
2002
-27.2 C (-17.0 F)
2003
-30.6 C (-23.1 F)
2004
-32.2 C (-26.0 F)
2005
-28.3 C (-18.9 F)
2006
-35.0 C (-31.0 F)
2007
-31.7 C (-25.1 F)
2008
-33.3 C (-27.9 F)
2009
-38.9 C (-38.0 F)
Wettest day (Rx1day)
The wettest day of the year at Blair, 1925 to 2009. The record is 154.4 mm (6.1 in) in 1975, marked on the chart; the median year is 59.9 mm (2.4 in).
Wettest day (Rx1day) at Blair by year
Year
Wettest day (Rx1day)
1925
61.0 mm (2.4 in)
1926
53.3 mm (2.1 in)
1927
45.7 mm (1.8 in)
1928
51.1 mm (2.0 in)
1929
49.5 mm (1.9 in)
1930
63.8 mm (2.5 in)
1931
64.8 mm (2.6 in)
1932
63.5 mm (2.5 in)
1933
55.1 mm (2.2 in)
1934
89.4 mm (3.5 in)
1935
49.3 mm (1.9 in)
1936
54.6 mm (2.1 in)
1937
47.0 mm (1.9 in)
1938
57.9 mm (2.3 in)
1939
50.3 mm (2.0 in)
1940
34.3 mm (1.4 in)
1941
64.0 mm (2.5 in)
1942
52.3 mm (2.1 in)
1943
36.3 mm (1.4 in)
1944
39.9 mm (1.6 in)
1945
64.5 mm (2.5 in)
1946
79.0 mm (3.1 in)
1947
63.0 mm (2.5 in)
1948
23.4 mm (0.9 in)
1949
69.1 mm (2.7 in)
1950
69.1 mm (2.7 in)
1951
51.8 mm (2.0 in)
1952
38.4 mm (1.5 in)
1953
61.2 mm (2.4 in)
1954
107.2 mm (4.2 in)
1955
85.3 mm (3.4 in)
1956
49.0 mm (1.9 in)
1957
57.9 mm (2.3 in)
1958
73.7 mm (2.9 in)
1959
69.1 mm (2.7 in)
1960
47.2 mm (1.9 in)
1961
46.0 mm (1.8 in)
1962
83.3 mm (3.3 in)
1963
37.6 mm (1.5 in)
1964
96.0 mm (3.8 in)
1965
73.7 mm (2.9 in)
1966
87.4 mm (3.4 in)
1967
30.7 mm (1.2 in)
1968
90.9 mm (3.6 in)
1969
54.1 mm (2.1 in)
1970
48.8 mm (1.9 in)
1971
39.4 mm (1.6 in)
1972
75.9 mm (3.0 in)
1973
87.1 mm (3.4 in)
1974
47.0 mm (1.9 in)
1975
154.4 mm (6.1 in)
1976
38.6 mm (1.5 in)
1977
57.4 mm (2.3 in)
1978
105.9 mm (4.2 in)
1979
56.6 mm (2.2 in)
1980
63.5 mm (2.5 in)
1981
76.2 mm (3.0 in)
1982
114.3 mm (4.5 in)
1983
86.9 mm (3.4 in)
1984
49.0 mm (1.9 in)
1985
77.5 mm (3.1 in)
1986
72.4 mm (2.9 in)
1987
85.3 mm (3.4 in)
1988
48.3 mm (1.9 in)
1989
69.9 mm (2.8 in)
1990
87.6 mm (3.4 in)
1991
52.3 mm (2.1 in)
1992
133.6 mm (5.3 in)
1993
59.7 mm (2.4 in)
1994
144.5 mm (5.7 in)
1995
134.9 mm (5.3 in)
1996
38.1 mm (1.5 in)
1997
37.8 mm (1.5 in)
1998
95.0 mm (3.7 in)
1999
56.4 mm (2.2 in)
2000
47.8 mm (1.9 in)
2001
91.4 mm (3.6 in)
2002
59.9 mm (2.4 in)
2003
29.5 mm (1.2 in)
2004
86.4 mm (3.4 in)
2005
70.4 mm (2.8 in)
2006
79.5 mm (3.1 in)
2007
45.7 mm (1.8 in)
2008
47.8 mm (1.9 in)
2009
40.1 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Blair, 1925 to 2009. The record is 207.7 mm (8.2 in) in 1975, marked on the chart; the median year is 91.6 mm (3.6 in).
Wettest five days (Rx5day) at Blair by year
Year
Wettest five days (Rx5day)
1925
134.9 mm (5.3 in)
1926
88.8 mm (3.5 in)
1927
81.8 mm (3.2 in)
1928
118.9 mm (4.7 in)
1929
52.0 mm (2.0 in)
1930
124.8 mm (4.9 in)
1931
83.0 mm (3.3 in)
1932
63.5 mm (2.5 in)
1933
61.7 mm (2.4 in)
1934
106.5 mm (4.2 in)
1935
56.6 mm (2.2 in)
1936
99.3 mm (3.9 in)
1937
65.3 mm (2.6 in)
1938
113.8 mm (4.5 in)
1939
69.8 mm (2.7 in)
1940
77.0 mm (3.0 in)
1941
72.2 mm (2.8 in)
1942
91.5 mm (3.6 in)
1943
90.2 mm (3.6 in)
1944
70.1 mm (2.8 in)
1945
88.8 mm (3.5 in)
1946
113.0 mm (4.4 in)
1947
90.4 mm (3.6 in)
1948
39.4 mm (1.6 in)
1949
113.3 mm (4.5 in)
1950
119.2 mm (4.7 in)
1951
77.9 mm (3.1 in)
1952
105.4 mm (4.1 in)
1953
94.7 mm (3.7 in)
1954
177.3 mm (7.0 in)
1955
120.1 mm (4.7 in)
1956
77.7 mm (3.1 in)
1957
68.3 mm (2.7 in)
1958
100.0 mm (3.9 in)
1959
116.3 mm (4.6 in)
1960
91.9 mm (3.6 in)
1961
75.2 mm (3.0 in)
1962
120.1 mm (4.7 in)
1963
60.7 mm (2.4 in)
1964
156.2 mm (6.1 in)
1965
116.9 mm (4.6 in)
1966
91.7 mm (3.6 in)
1967
60.9 mm (2.4 in)
1968
126.7 mm (5.0 in)
1969
89.4 mm (3.5 in)
1970
76.0 mm (3.0 in)
1971
70.6 mm (2.8 in)
1972
145.0 mm (5.7 in)
1973
88.2 mm (3.5 in)
1974
74.4 mm (2.9 in)
1975
207.7 mm (8.2 in)
1976
66.1 mm (2.6 in)
1977
68.8 mm (2.7 in)
1978
122.4 mm (4.8 in)
1979
105.5 mm (4.2 in)
1980
134.9 mm (5.3 in)
1981
117.6 mm (4.6 in)
1982
115.6 mm (4.6 in)
1983
104.9 mm (4.1 in)
1984
84.6 mm (3.3 in)
1985
82.8 mm (3.3 in)
1986
116.3 mm (4.6 in)
1987
100.0 mm (3.9 in)
1988
91.6 mm (3.6 in)
1989
87.7 mm (3.5 in)
1990
118.6 mm (4.7 in)
1991
87.6 mm (3.4 in)
1992
184.1 mm (7.2 in)
1993
122.9 mm (4.8 in)
1994
159.5 mm (6.3 in)
1995
173.5 mm (6.8 in)
1996
50.8 mm (2.0 in)
1997
58.4 mm (2.3 in)
1998
157.9 mm (6.2 in)
1999
103.6 mm (4.1 in)
2000
122.2 mm (4.8 in)
2001
124.4 mm (4.9 in)
2002
92.2 mm (3.6 in)
2003
74.7 mm (2.9 in)
2004
112.8 mm (4.4 in)
2005
86.5 mm (3.4 in)
2006
87.6 mm (3.4 in)
2007
88.3 mm (3.5 in)
2008
68.9 mm (2.7 in)
2009
66.9 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Blair, 1925 to 2009. The record is 55 days in 1953, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Blair by year
Year
Longest dry spell (CDD)
1925
24 days
1926
18 days
1927
24 days
1928
18 days
1929
17 days
1930
29 days
1931
38 days
1932
22 days
1933
24 days
1934
24 days
1935
24 days
1936
23 days
1937
17 days
1938
18 days
1939
24 days
1940
20 days
1941
18 days
1942
27 days
1943
53 days
1944
25 days
1945
16 days
1946
17 days
1947
25 days
1948
18 days
1949
22 days
1950
24 days
1951
18 days
1952
30 days
1953
55 days
1954
16 days
1955
18 days
1956
21 days
1957
24 days
1958
31 days
1959
18 days
1960
20 days
1961
30 days
1962
21 days
1963
16 days
1964
32 days
1965
17 days
1966
27 days
1967
26 days
1968
39 days
1969
33 days
1970
30 days
1971
19 days
1972
22 days
1973
17 days
1974
13 days
1975
23 days
1976
44 days
1977
13 days
1978
28 days
1979
17 days
1980
31 days
1981
31 days
1982
21 days
1983
18 days
1984
22 days
1985
14 days
1986
22 days
1987
22 days
1988
31 days
1989
20 days
1990
20 days
1991
21 days
1992
23 days
1993
14 days
1994
21 days
1995
18 days
1996
12 days
1997
21 days
1998
22 days
1999
22 days
2000
23 days
2001
24 days
2002
41 days
2003
23 days
2004
18 days
2005
16 days
2006
26 days
2007
33 days
2008
17 days
2009
34 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
78 years with a frost
Across 78 years with a frost, the median last spring frost at Blair falls on 17 May and the median first autumn frost on 24 September, which leaves a median of 128 days between them.
In 1978 to 2008 the median growing season was 136 days. That is 8 days more than in 1930 to 1959.
Fitted over all years, the growing season changes by +1.3 days per decade at this station.
Frost dates and growing season at Blair
Measure
Median, all years
Earliest period (1930 to 1959)
Recent period (1978 to 2008)
Recent against earliest
Fitted trend
Last spring frost
17 May
17 May
17 May
no change
-0.5 days per decade
First autumn frost
24 September
25 September
25 September
no change
+0.8 days per decade
Growing days
128 days
128 days
136 days
8 days more
+1.3 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
76 years, 1929 to 2008
A day with at least 62.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 156.5 mm (6.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Blair: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
62.2 mm (2.4 in)
5 years
85.9 mm (3.4 in)
10 years
102.2 mm (4.0 in)
25 years
123.5 mm (4.9 in)
50 years
139.8 mm (5.5 in)
100 years
156.5 mm (6.2 in)
Longer than the 76 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, 76 years of values from 1929 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: 154.4 mm (6.1 in) in 1975; 144.5 mm (5.7 in) in 1994; 134.9 mm (5.3 in) in 1995.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Blair, at 2002. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 2002 ran 0.4 C (0.7 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Blair, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
2002
-0.4
-0.7
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 Blair standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Blair 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.