Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Blankastrom. 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 Blankastrom, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.4 C (50.7 F)
-27.6 C (-17.7 F)
n/a
n/a
Feb
15.8 C (60.4 F)
-36.0 C (-32.8 F)
n/a
n/a
Mar
21.4 C (70.5 F)
-29.5 C (-21.1 F)
n/a
n/a
Apr
24.2 C (75.6 F)
-12.8 C (9.0 F)
n/a
n/a
May
30.2 C (86.4 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
32.7 C (90.9 F)
-1.5 C (29.3 F)
n/a
n/a
Jul
32.1 C (89.8 F)
2.3 C (36.1 F)
n/a
n/a
Aug
33.8 C (92.8 F)
-1.5 C (29.3 F)
n/a
n/a
Sep
27.6 C (81.7 F)
-6.8 C (19.8 F)
n/a
n/a
Oct
22.4 C (72.3 F)
-11.6 C (11.1 F)
n/a
n/a
Nov
14.9 C (58.8 F)
-25.0 C (-13.0 F)
n/a
n/a
Dec
12.8 C (55.0 F)
-24.5 C (-12.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Blankastrom still stand. 1971 holds the most, with 72.
Standing records at Blankastrom by the year they were set
Year set
Standing records
1945
30
1946
29
1947
71
1948
46
1949
59
1950
21
1951
31
1952
45
1953
42
1954
23
1955
59
1956
44
1957
46
1958
45
1959
40
1960
37
1961
55
1962
43
1963
35
1964
51
1965
63
1966
47
1967
25
1968
57
1969
55
1970
47
1971
72
1972
37
1973
70
1974
32
1975
56
1976
42
1977
9
All-Time Record Progression
1 new records
1 all-time records were set at Blankastrom between 7 August 1975 and 7 August 1975. Each dot is a new record.
When Blankastrom set new all-time records
Date
Kind
Detail
1975-08-07
Record high maximum temperature
Record high maximum temperature 33.8 C (92.8 F)
Wettest Day of Each Month
Sep: 46.7 mm (1.8 in)
The wettest day on record for each calendar month at Blankastrom. The most was 46.7 mm (1.8 in) on 5 September 1965.
Record daily precipitation for each month at Blankastrom
Month
Record daily precipitation (mm)
Date
Jan
22.5 mm (0.9 in)
7 January 1951
Feb
19.5 mm (0.8 in)
17 February 1973
Mar
18.8 mm (0.7 in)
7 March 1947
Apr
33.1 mm (1.3 in)
10 April 1959
May
33.0 mm (1.3 in)
27 May 1976
Jun
30.4 mm (1.2 in)
14 June 1946
Jul
45.5 mm (1.8 in)
10 July 1972
Aug
43.3 mm (1.7 in)
3 August 1960
Sep
46.7 mm (1.8 in)
5 September 1965
Oct
35.9 mm (1.4 in)
13 October 1964
Nov
26.9 mm (1.1 in)
9 November 1945
Dec
24.7 mm (1.0 in)
23 December 1967
Period of Record Coverage
1945 to 1977
Complete yearUnder 90 percent of days
33 years of record at Blankastrom, 1945 to 1977. 1 years have data for under 90 percent of days and are left out of rankings: 1977.
Cooler than the station meanWarmer than the station mean
One stripe for each of 32 complete years at Blankastrom, 1945 to 1976. Blue stripes are years cooler than the station's own mean of 6.1 C (43.0 F); red stripes are warmer. The coolest year was 1956, at 4.7 C (40.5 F), and the warmest was 1949, at 7.8 C (46.1 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Blankastrom as warming stripes, 1945 to 1976
Year
Annual mean temperature
Difference from the station mean
1945
7.1 C
+1.01 C
1946
6.5 C
+0.43 C
1947
5.6 C
-0.48 C
1948
6.9 C
+0.80 C
1949
7.8 C
+1.70 C
1950
6.7 C
+0.58 C
1951
6.6 C
+0.53 C
1952
5.4 C
-0.67 C
1953
7.4 C
+1.26 C
1954
5.9 C
-0.25 C
1955
5.1 C
-1.01 C
1956
4.7 C
-1.41 C
1957
6.3 C
+0.23 C
1958
5.1 C
-1.03 C
1959
6.8 C
+0.66 C
1960
5.6 C
-0.47 C
1961
7.2 C
+1.10 C
1962
5.3 C
-0.77 C
1963
5.1 C
-1.06 C
1964
6.3 C
+0.14 C
1965
5.1 C
-1.04 C
1966
5.4 C
-0.71 C
1967
6.8 C
+0.68 C
1968
6.1 C
+0.01 C
1969
5.4 C
-0.70 C
1970
4.7 C
-1.37 C
1971
6.3 C
+0.18 C
1972
6.5 C
+0.41 C
1973
6.3 C
+0.23 C
1974
6.8 C
+0.66 C
1975
7.3 C
+1.20 C
1976
5.3 C
-0.78 C
The fitted trend in annual mean temperature here over 1945 to 1976 is -0.2 C (-0.5 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.3 F (-0.9 to 0.3) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Blankastrom
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.2 C (-0.5 to 0.2) per decade
-0.3 F (-0.9 to 0.3) per decade
1945 to 1976
32
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.5 to 0.2) per decade
-0.2 F (-0.9 to 0.4) per decade
1945 to 1976
32
Not clearly different from zero
Mean daily minimum
-0.2 C (-0.6 to 0.1) per decade
-0.4 F (-1.0 to 0.3) per decade
1945 to 1976
32
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
1945 to 1977
Yearly extremes at Blankastrom: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.8 C (92.8 F)
1975
29.3 C (84.7 F)
33
Coldest night (TNn)
-36.0 C (-32.8 F)
1966
-24.0 C (-11.2 F)
33
Wettest day (Rx1day)
46.7 mm (1.8 in)
1965
32.2 mm (1.3 in)
33
Wettest five days (Rx5day)
99.7 mm (3.9 in)
1946
51.7 mm (2.0 in)
33
Longest dry spell (CDD)
42 days
1959
25 days
33
Hottest day (TXx)
The hottest day of the year at Blankastrom, 1945 to 1977. The record is 33.8 C (92.8 F) in 1975, marked on the chart; the median year is 29.3 C (84.7 F).
Hottest day (TXx) at Blankastrom by year
Year
Hottest day (TXx)
1945
32.1 C (89.8 F)
1946
29.0 C (84.2 F)
1947
32.7 C (90.9 F)
1948
31.4 C (88.5 F)
1949
31.5 C (88.7 F)
1950
30.3 C (86.5 F)
1951
27.4 C (81.3 F)
1952
29.3 C (84.7 F)
1953
29.2 C (84.6 F)
1954
30.2 C (86.4 F)
1955
29.8 C (85.6 F)
1956
27.8 C (82.0 F)
1957
28.5 C (83.3 F)
1958
27.5 C (81.5 F)
1959
31.0 C (87.8 F)
1960
25.3 C (77.5 F)
1961
28.8 C (83.8 F)
1962
26.7 C (80.1 F)
1963
29.3 C (84.7 F)
1964
30.8 C (87.4 F)
1965
25.2 C (77.4 F)
1966
28.6 C (83.5 F)
1967
28.2 C (82.8 F)
1968
31.1 C (88.0 F)
1969
30.5 C (86.9 F)
1970
31.1 C (88.0 F)
1971
28.6 C (83.5 F)
1972
29.2 C (84.6 F)
1973
29.6 C (85.3 F)
1974
26.2 C (79.2 F)
1975
33.8 C (92.8 F)
1976
30.0 C (86.0 F)
1977
24.0 C (75.2 F)
Coldest night (TNn)
The coldest night of the year at Blankastrom, 1945 to 1977. The record is -36.0 C (-32.8 F) in 1966, marked on the chart; the median year is -24.0 C (-11.2 F).
Coldest night (TNn) at Blankastrom by year
Year
Coldest night (TNn)
1945
-22.0 C (-7.6 F)
1946
-24.9 C (-12.8 F)
1947
-29.5 C (-21.1 F)
1948
-26.0 C (-14.8 F)
1949
-13.7 C (7.3 F)
1950
-17.0 C (1.4 F)
1951
-15.8 C (3.6 F)
1952
-20.6 C (-5.1 F)
1953
-24.9 C (-12.8 F)
1954
-21.0 C (-5.8 F)
1955
-24.5 C (-12.1 F)
1956
-31.0 C (-23.8 F)
1957
-17.0 C (1.4 F)
1958
-27.6 C (-17.7 F)
1959
-19.4 C (-2.9 F)
1960
-28.6 C (-19.5 F)
1961
-20.0 C (-4.0 F)
1962
-24.5 C (-12.1 F)
1963
-27.6 C (-17.7 F)
1964
-24.3 C (-11.7 F)
1965
-25.4 C (-13.7 F)
1966
-36.0 C (-32.8 F)
1967
-24.0 C (-11.2 F)
1968
-26.6 C (-15.9 F)
1969
-26.4 C (-15.5 F)
1970
-27.8 C (-18.0 F)
1971
-24.0 C (-11.2 F)
1972
-22.4 C (-8.3 F)
1973
-17.4 C (0.7 F)
1974
-12.8 C (9.0 F)
1975
-14.3 C (6.3 F)
1976
-23.8 C (-10.8 F)
1977
-20.2 C (-4.4 F)
Wettest day (Rx1day)
The wettest day of the year at Blankastrom, 1945 to 1977. The record is 46.7 mm (1.8 in) in 1965, marked on the chart; the median year is 32.2 mm (1.3 in).
Wettest day (Rx1day) at Blankastrom by year
Year
Wettest day (Rx1day)
1945
32.9 mm (1.3 in)
1946
37.3 mm (1.5 in)
1947
36.8 mm (1.4 in)
1948
23.1 mm (0.9 in)
1949
30.7 mm (1.2 in)
1950
34.4 mm (1.4 in)
1951
22.9 mm (0.9 in)
1952
32.2 mm (1.3 in)
1953
18.5 mm (0.7 in)
1954
29.9 mm (1.2 in)
1955
32.5 mm (1.3 in)
1956
30.7 mm (1.2 in)
1957
41.9 mm (1.6 in)
1958
22.0 mm (0.9 in)
1959
33.1 mm (1.3 in)
1960
43.3 mm (1.7 in)
1961
41.4 mm (1.6 in)
1962
30.2 mm (1.2 in)
1963
20.1 mm (0.8 in)
1964
35.9 mm (1.4 in)
1965
46.7 mm (1.8 in)
1966
32.2 mm (1.3 in)
1967
26.5 mm (1.0 in)
1968
25.9 mm (1.0 in)
1969
30.0 mm (1.2 in)
1970
33.5 mm (1.3 in)
1971
17.3 mm (0.7 in)
1972
45.5 mm (1.8 in)
1973
23.0 mm (0.9 in)
1974
33.4 mm (1.3 in)
1975
22.6 mm (0.9 in)
1976
33.0 mm (1.3 in)
1977
30.1 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Blankastrom, 1945 to 1977. The record is 99.7 mm (3.9 in) in 1946, marked on the chart; the median year is 51.7 mm (2.0 in).
Wettest five days (Rx5day) at Blankastrom by year
Year
Wettest five days (Rx5day)
1945
66.2 mm (2.6 in)
1946
99.7 mm (3.9 in)
1947
91.3 mm (3.6 in)
1948
43.4 mm (1.7 in)
1949
37.4 mm (1.5 in)
1950
67.1 mm (2.6 in)
1951
58.3 mm (2.3 in)
1952
62.7 mm (2.5 in)
1953
39.1 mm (1.5 in)
1954
52.7 mm (2.1 in)
1955
55.9 mm (2.2 in)
1956
55.3 mm (2.2 in)
1957
67.9 mm (2.7 in)
1958
41.0 mm (1.6 in)
1959
48.3 mm (1.9 in)
1960
82.8 mm (3.3 in)
1961
59.5 mm (2.3 in)
1962
38.2 mm (1.5 in)
1963
41.1 mm (1.6 in)
1964
61.0 mm (2.4 in)
1965
60.9 mm (2.4 in)
1966
47.8 mm (1.9 in)
1967
45.9 mm (1.8 in)
1968
40.3 mm (1.6 in)
1969
46.7 mm (1.8 in)
1970
54.1 mm (2.1 in)
1971
36.3 mm (1.4 in)
1972
49.6 mm (2.0 in)
1973
50.4 mm (2.0 in)
1974
51.7 mm (2.0 in)
1975
32.5 mm (1.3 in)
1976
46.4 mm (1.8 in)
1977
55.4 mm (2.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Blankastrom, 1945 to 1977. The record is 42 days in 1959, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Blankastrom by year
Year
Longest dry spell (CDD)
1945
21 days
1946
34 days
1947
30 days
1948
35 days
1949
22 days
1950
15 days
1951
20 days
1952
19 days
1953
26 days
1954
18 days
1955
20 days
1956
26 days
1957
17 days
1958
25 days
1959
42 days
1960
27 days
1961
30 days
1962
26 days
1963
17 days
1964
35 days
1965
26 days
1966
21 days
1967
16 days
1968
32 days
1969
28 days
1970
20 days
1971
20 days
1972
28 days
1973
30 days
1974
23 days
1975
37 days
1976
20 days
1977
17 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
32 years with a frost
Across 32 years with a frost, the median last spring frost at Blankastrom falls on 24 May and the median first autumn frost on 20 September, which leaves a median of 121 days between them.
Fitted over all years, the growing season changes by -6.2 days per decade at this station.
Frost dates and growing season at Blankastrom
Measure
Median, all years
Earliest period
Recent period (1947 to 1976)
Recent against earliest
Fitted trend
Last spring frost
24 May
n/a
24 May
n/a
+2.3 days per decade
First autumn frost
20 September
n/a
20 September
n/a
-3.9 days per decade
Growing days
121 days
n/a
119 days
n/a
-6.2 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, 1945 to 1977
A day with at least 31.0 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 48.8 mm (1.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Blankastrom: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
31.0 mm (1.2 in)
5 years
37.7 mm (1.5 in)
10 years
41.3 mm (1.6 in)
25 years
44.9 mm (1.8 in)
50 years
47.0 mm (1.9 in)
Longer than the 33 years of record
100 years
48.8 mm (1.9 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 1945 to 1977.
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: 46.7 mm (1.8 in) in 1965; 45.5 mm (1.8 in) in 1972; 43.3 mm (1.7 in) in 1960.
Download the Data
Data for Blankastrom standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Blankastrom 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.