Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Bolshereck. 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 Bolshereck, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
6.2 C (43.2 F)
-38.8 C (-37.8 F)
n/a
n/a
Feb
4.7 C (40.5 F)
-36.6 C (-33.9 F)
n/a
n/a
Mar
6.8 C (44.2 F)
-31.4 C (-24.5 F)
n/a
n/a
Apr
13.4 C (56.1 F)
-25.2 C (-13.4 F)
n/a
n/a
May
20.6 C (69.1 F)
-9.8 C (14.4 F)
n/a
n/a
Jun
26.0 C (78.8 F)
-2.9 C (26.8 F)
n/a
n/a
Jul
25.1 C (77.2 F)
0.2 C (32.4 F)
n/a
n/a
Aug
26.6 C (79.9 F)
-1.6 C (29.1 F)
n/a
n/a
Sep
23.4 C (74.1 F)
-5.9 C (21.4 F)
n/a
n/a
Oct
17.4 C (63.3 F)
-14.7 C (5.5 F)
n/a
n/a
Nov
11.5 C (52.7 F)
-26.6 C (-15.9 F)
n/a
n/a
Dec
9.0 C (48.2 F)
-33.0 C (-27.4 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Bolshereck still stand. 1967 holds the most, with 65.
Standing records at Bolshereck by the year they were set
Year set
Standing records
1966
31
1967
65
1968
29
1969
36
1970
16
1971
32
1972
40
1973
30
1974
47
1975
24
1976
38
1977
26
1978
20
1979
51
1980
62
1981
29
1982
26
1983
17
1984
32
1985
51
1986
28
1987
26
1988
20
1989
24
1990
42
1991
22
1992
32
1993
23
1994
36
1995
33
1996
41
1997
22
1998
18
1999
27
2000
26
2002
24
2003
18
2004
21
2005
30
2006
38
2007
14
2008
49
2009
22
2010
47
2011
39
2012
35
2013
5
All-Time Record Progression
1 new records
1 all-time records were set at Bolshereck between 16 August 2006 and 16 August 2006. Each dot is a new record.
When Bolshereck set new all-time records
Date
Kind
Detail
2006-08-16
Record high minimum temperature
Record high minimum temperature 16.6 C (61.9 F)
Wettest Day of Each Month
Oct: 96.9 mm (3.8 in)
The wettest day on record for each calendar month at Bolshereck. The most was 96.9 mm (3.8 in) on 2 October 1967.
Record daily precipitation for each month at Bolshereck
Month
Record daily precipitation (mm)
Date
Jan
31.4 mm (1.2 in)
27 January 2005
Feb
31.1 mm (1.2 in)
26 February 2011
Mar
24.4 mm (1.0 in)
6 March 1989
Apr
26.3 mm (1.0 in)
26 April 1981
May
53.3 mm (2.1 in)
5 May 1981
Jun
55.1 mm (2.2 in)
24 June 2005
Jul
75.5 mm (3.0 in)
3 July 1984
Aug
87.1 mm (3.4 in)
31 August 1982
Sep
69.8 mm (2.7 in)
8 September 1973
Oct
96.9 mm (3.8 in)
2 October 1967
Nov
46.7 mm (1.8 in)
12 November 1979
Dec
31.1 mm (1.2 in)
31 December 1972
Period of Record Coverage
1966 to 2013
Complete yearUnder 90 percent of days
47 years of record at Bolshereck, 1966 to 2013. 3 years have data for under 90 percent of days and are left out of rankings: 1966, 1986, 2013.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Bolshereck, 1967 to 2012. Blue stripes are years cooler than the station's own mean of 0.3 C (32.6 F); red stripes are warmer. The coolest year was 1967, at -1.7 C (28.9 F), and the warmest was 2008, at 1.9 C (35.4 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Bolshereck as warming stripes, 1967 to 2012
Year
Annual mean temperature
Difference from the station mean
1967
-1.7 C
-2.03 C
1968
0.7 C
+0.37 C
1969
-1.1 C
-1.45 C
1970
-0.3 C
-0.57 C
1971
-0.2 C
-0.54 C
1972
-0.5 C
-0.77 C
1973
-0.3 C
-0.65 C
1974
0.2 C
-0.13 C
1975
-0.5 C
-0.85 C
1976
-0.5 C
-0.80 C
1977
-0.8 C
-1.11 C
1978
-0.9 C
-1.17 C
1979
-0.8 C
-1.16 C
1980
-0.9 C
-1.25 C
1981
-0.1 C
-0.38 C
1982
-0.3 C
-0.65 C
1983
0.0 C
-0.29 C
1984
0.0 C
-0.28 C
1985
-0.7 C
-1.06 C
1987
-0.5 C
-0.86 C
1988
-0.1 C
-0.45 C
1989
1.4 C
+1.06 C
1990
1.0 C
+0.65 C
1991
0.9 C
+0.61 C
1992
-0.1 C
-0.46 C
1993
-0.4 C
-0.75 C
1994
1.2 C
+0.89 C
1995
1.5 C
+1.14 C
1996
1.8 C
+1.44 C
1997
1.4 C
+1.04 C
1998
-0.1 C
-0.46 C
1999
0.3 C
-0.03 C
2000
-0.2 C
-0.54 C
2002
1.0 C
+0.64 C
2003
1.4 C
+1.09 C
2004
1.6 C
+1.28 C
2005
1.6 C
+1.33 C
2006
1.1 C
+0.82 C
2007
0.7 C
+0.40 C
2008
1.9 C
+1.58 C
2009
1.5 C
+1.18 C
2010
1.1 C
+0.79 C
2011
1.5 C
+1.14 C
2012
1.6 C
+1.24 C
The annual mean temperature here has risen by 0.5 C (0.4 to 0.7) per decade over 1967 to 2012. In Fahrenheit: 1.0 F (0.7 to 1.2) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Bolshereck
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.5 C (0.4 to 0.7) per decade
1.0 F (0.7 to 1.2) per decade
1967 to 2012
44
Rise
Mean daily maximum
0.6 C (0.4 to 0.7) per decade
1.0 F (0.8 to 1.2) per decade
1967 to 2012
44
Rise
Mean daily minimum
0.5 C (0.4 to 0.7) per decade
0.9 F (0.6 to 1.2) per decade
1967 to 2012
44
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
1966 to 2013
Yearly extremes at Bolshereck: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
26.6 C (79.9 F)
1981
22.4 C (72.3 F)
47
Coldest night (TNn)
-38.8 C (-37.8 F)
1979
-31.4 C (-24.5 F)
47
Wettest day (Rx1day)
96.9 mm (3.8 in)
1967
46.0 mm (1.8 in)
47
Wettest five days (Rx5day)
168.0 mm (6.6 in)
1996
74.8 mm (2.9 in)
47
Longest dry spell (CDD)
53 days
1996
24 days
47
Hottest day (TXx)
The hottest day of the year at Bolshereck, 1966 to 2013. The record is 26.6 C (79.9 F) in 1981, marked on the chart; the median year is 22.4 C (72.3 F).
Hottest day (TXx) at Bolshereck by year
Year
Hottest day (TXx)
1966
21.4 C (70.5 F)
1967
22.4 C (72.3 F)
1968
21.5 C (70.7 F)
1969
23.2 C (73.8 F)
1970
22.3 C (72.1 F)
1971
24.2 C (75.6 F)
1972
23.9 C (75.0 F)
1973
22.6 C (72.7 F)
1974
21.3 C (70.3 F)
1975
21.2 C (70.2 F)
1976
22.2 C (72.0 F)
1977
21.6 C (70.9 F)
1978
24.0 C (75.2 F)
1979
22.5 C (72.5 F)
1980
23.0 C (73.4 F)
1981
26.6 C (79.9 F)
1982
22.1 C (71.8 F)
1983
22.8 C (73.0 F)
1984
21.9 C (71.4 F)
1985
22.2 C (72.0 F)
1986
21.6 C (70.9 F)
1987
20.0 C (68.0 F)
1988
20.4 C (68.7 F)
1989
21.3 C (70.3 F)
1990
23.5 C (74.3 F)
1991
24.1 C (75.4 F)
1992
22.0 C (71.6 F)
1993
21.4 C (70.5 F)
1994
23.4 C (74.1 F)
1995
19.3 C (66.7 F)
1996
26.0 C (78.8 F)
1997
22.7 C (72.9 F)
1998
23.2 C (73.8 F)
1999
21.0 C (69.8 F)
2000
23.0 C (73.4 F)
2002
22.6 C (72.7 F)
2003
21.8 C (71.2 F)
2004
24.1 C (75.4 F)
2005
21.9 C (71.4 F)
2006
25.6 C (78.1 F)
2007
21.5 C (70.7 F)
2008
22.3 C (72.1 F)
2009
25.0 C (77.0 F)
2010
25.1 C (77.2 F)
2011
25.0 C (77.0 F)
2012
24.3 C (75.7 F)
2013
10.8 C (51.4 F)
Coldest night (TNn)
The coldest night of the year at Bolshereck, 1966 to 2013. The record is -38.8 C (-37.8 F) in 1979, marked on the chart; the median year is -31.4 C (-24.5 F).
Coldest night (TNn) at Bolshereck by year
Year
Coldest night (TNn)
1966
-31.7 C (-25.1 F)
1967
-36.6 C (-33.9 F)
1968
-29.9 C (-21.8 F)
1969
-30.4 C (-22.7 F)
1970
-30.4 C (-22.7 F)
1971
-31.8 C (-25.2 F)
1972
-33.4 C (-28.1 F)
1973
-35.7 C (-32.3 F)
1974
-32.6 C (-26.7 F)
1975
-32.3 C (-26.1 F)
1976
-33.0 C (-27.4 F)
1977
-32.9 C (-27.2 F)
1978
-31.4 C (-24.5 F)
1979
-38.8 C (-37.8 F)
1980
-33.2 C (-27.8 F)
1981
-33.9 C (-29.0 F)
1982
-30.7 C (-23.3 F)
1983
-30.4 C (-22.7 F)
1984
-29.2 C (-20.6 F)
1985
-32.6 C (-26.7 F)
1986
-27.1 C (-16.8 F)
1987
-34.9 C (-30.8 F)
1988
-31.1 C (-24.0 F)
1989
-30.9 C (-23.6 F)
1990
-35.5 C (-31.9 F)
1991
-28.5 C (-19.3 F)
1992
-29.1 C (-20.4 F)
1993
-31.6 C (-24.9 F)
1994
-30.4 C (-22.7 F)
1995
-33.8 C (-28.8 F)
1996
-24.9 C (-12.8 F)
1997
-28.9 C (-20.0 F)
1998
-31.8 C (-25.2 F)
1999
-33.4 C (-28.1 F)
2000
-33.6 C (-28.5 F)
2002
-28.7 C (-19.7 F)
2003
-28.8 C (-19.8 F)
2004
-26.2 C (-15.2 F)
2005
-33.8 C (-28.8 F)
2006
-30.7 C (-23.3 F)
2007
-28.1 C (-18.6 F)
2008
-33.8 C (-28.8 F)
2009
-24.5 C (-12.1 F)
2010
-28.8 C (-19.8 F)
2011
-32.5 C (-26.5 F)
2012
-26.2 C (-15.2 F)
2013
-26.3 C (-15.3 F)
Wettest day (Rx1day)
The wettest day of the year at Bolshereck, 1966 to 2013. The record is 96.9 mm (3.8 in) in 1967, marked on the chart; the median year is 46.0 mm (1.8 in).
Wettest day (Rx1day) at Bolshereck by year
Year
Wettest day (Rx1day)
1966
73.0 mm (2.9 in)
1967
96.9 mm (3.8 in)
1968
40.9 mm (1.6 in)
1969
47.6 mm (1.9 in)
1970
44.5 mm (1.8 in)
1971
25.2 mm (1.0 in)
1972
47.3 mm (1.9 in)
1973
69.8 mm (2.7 in)
1974
30.5 mm (1.2 in)
1975
54.0 mm (2.1 in)
1976
37.2 mm (1.5 in)
1977
66.9 mm (2.6 in)
1978
44.5 mm (1.8 in)
1979
62.2 mm (2.4 in)
1980
37.3 mm (1.5 in)
1981
53.3 mm (2.1 in)
1982
87.1 mm (3.4 in)
1983
29.0 mm (1.1 in)
1984
75.5 mm (3.0 in)
1985
56.2 mm (2.2 in)
1986
38.8 mm (1.5 in)
1987
48.2 mm (1.9 in)
1988
47.4 mm (1.9 in)
1989
41.6 mm (1.6 in)
1990
52.0 mm (2.0 in)
1991
30.5 mm (1.2 in)
1992
32.7 mm (1.3 in)
1993
33.7 mm (1.3 in)
1994
31.8 mm (1.3 in)
1995
29.1 mm (1.1 in)
1996
47.8 mm (1.9 in)
1997
57.3 mm (2.3 in)
1998
58.7 mm (2.3 in)
1999
56.9 mm (2.2 in)
2000
46.0 mm (1.8 in)
2002
37.2 mm (1.5 in)
2003
55.1 mm (2.2 in)
2004
46.6 mm (1.8 in)
2005
55.1 mm (2.2 in)
2006
34.1 mm (1.3 in)
2007
38.5 mm (1.5 in)
2008
53.2 mm (2.1 in)
2009
17.2 mm (0.7 in)
2010
27.3 mm (1.1 in)
2011
31.1 mm (1.2 in)
2012
43.2 mm (1.7 in)
2013
22.2 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Bolshereck, 1966 to 2013. The record is 168.0 mm (6.6 in) in 1996, marked on the chart; the median year is 74.8 mm (2.9 in).
Wettest five days (Rx5day) at Bolshereck by year
Year
Wettest five days (Rx5day)
1966
94.6 mm (3.7 in)
1967
131.2 mm (5.2 in)
1968
83.5 mm (3.3 in)
1969
93.5 mm (3.7 in)
1970
74.7 mm (2.9 in)
1971
46.4 mm (1.8 in)
1972
68.2 mm (2.7 in)
1973
74.8 mm (2.9 in)
1974
50.4 mm (2.0 in)
1975
90.9 mm (3.6 in)
1976
60.1 mm (2.4 in)
1977
87.7 mm (3.5 in)
1978
93.3 mm (3.7 in)
1979
76.3 mm (3.0 in)
1980
56.2 mm (2.2 in)
1981
86.2 mm (3.4 in)
1982
160.3 mm (6.3 in)
1983
68.5 mm (2.7 in)
1984
137.2 mm (5.4 in)
1985
76.0 mm (3.0 in)
1986
81.1 mm (3.2 in)
1987
61.3 mm (2.4 in)
1988
92.7 mm (3.6 in)
1989
98.2 mm (3.9 in)
1990
67.3 mm (2.6 in)
1991
55.4 mm (2.2 in)
1992
58.6 mm (2.3 in)
1993
55.5 mm (2.2 in)
1994
60.1 mm (2.4 in)
1995
64.0 mm (2.5 in)
1996
168.0 mm (6.6 in)
1997
105.3 mm (4.1 in)
1998
126.9 mm (5.0 in)
1999
99.9 mm (3.9 in)
2000
69.4 mm (2.7 in)
2002
70.0 mm (2.8 in)
2003
92.1 mm (3.6 in)
2004
77.9 mm (3.1 in)
2005
101.1 mm (4.0 in)
2006
61.4 mm (2.4 in)
2007
64.3 mm (2.5 in)
2008
82.8 mm (3.3 in)
2009
43.9 mm (1.7 in)
2010
53.1 mm (2.1 in)
2011
68.4 mm (2.7 in)
2012
73.0 mm (2.9 in)
2013
39.5 mm (1.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Bolshereck, 1966 to 2013. The record is 53 days in 1996, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Bolshereck by year
Year
Longest dry spell (CDD)
1966
10 days
1967
14 days
1968
22 days
1969
14 days
1970
27 days
1971
23 days
1972
28 days
1973
33 days
1974
46 days
1975
31 days
1976
22 days
1977
30 days
1978
26 days
1979
14 days
1980
30 days
1981
36 days
1982
19 days
1983
31 days
1984
36 days
1985
22 days
1986
21 days
1987
14 days
1988
39 days
1989
42 days
1990
21 days
1991
21 days
1992
11 days
1993
24 days
1994
34 days
1995
28 days
1996
53 days
1997
37 days
1998
17 days
1999
18 days
2000
27 days
2002
24 days
2003
31 days
2004
15 days
2005
24 days
2006
24 days
2007
18 days
2008
19 days
2009
21 days
2010
18 days
2011
13 days
2012
29 days
2013
20 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
44 years with a frost
Across 44 years with a frost, the median last spring frost at Bolshereck falls on 3 June and the median first autumn frost on 19 September, which leaves a median of 106 days between them.
Fitted over all years, the growing season changes by +5.5 days per decade at this station.
Frost dates and growing season at Bolshereck
Measure
Median, all years
Earliest period
Recent period (1981 to 2012)
Recent against earliest
Fitted trend
Last spring frost
3 June
n/a
2 June
n/a
-1.0 days per decade
First autumn frost
19 September
n/a
21 September
n/a
+4.5 days per decade
Growing days
106 days
n/a
113 days
n/a
+5.5 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
44 years, 1967 to 2012
A day with at least 44.4 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 95.6 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Bolshereck: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
44.4 mm (1.7 in)
5 years
58.9 mm (2.3 in)
10 years
68.1 mm (2.7 in)
25 years
79.5 mm (3.1 in)
50 years
87.7 mm (3.5 in)
Longer than the 44 years of record
100 years
95.6 mm (3.8 in)
Longer than the 44 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, 44 years of values from 1967 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: 96.9 mm (3.8 in) in 1967; 87.1 mm (3.4 in) in 1982; 75.5 mm (3.0 in) in 1984.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Bolshereck, at 1994. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1994 ran 0.4 C (0.7 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Bolshereck, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1994
+0.4
+0.7
likely
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 Bolshereck standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bolshereck 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.