Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Stony Mountain. 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 Stony Mountain, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
5.6 C (42.1 F)
-44.4 C (-47.9 F)
n/a
n/a
Feb
6.1 C (43.0 F)
-45.0 C (-49.0 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-23.3 C (-9.9 F)
n/a
n/a
May
35.6 C (96.1 F)
-12.8 C (9.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
38.9 C (102.0 F)
-3.9 C (25.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
-3.3 C (26.1 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-20.6 C (-5.1 F)
n/a
n/a
Nov
20.6 C (69.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Dec
9.4 C (48.9 F)
-46.7 C (-52.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Stony Mountain still stand. 1878 holds the most, with 57.
Standing records at Stony Mountain by the year they were set
Year set
Standing records
1878
57
1879
45
1880
37
1881
29
1882
8
1883
23
1884
42
1885
44
1886
43
1887
43
1888
41
1889
44
1890
49
1891
54
1892
4
1894
16
1895
38
1896
46
1897
44
1898
20
1899
42
1900
29
1901
35
1902
48
1903
37
1904
29
1905
29
1906
36
1907
41
1908
34
1909
26
1910
44
1911
22
1912
25
1913
31
1914
44
1915
37
1916
27
1917
47
1918
31
1919
43
All-Time Record Progression
1 new records
1 all-time records were set at Stony Mountain between 2 December 1914 and 2 December 1914. Each dot is a new record.
When Stony Mountain set new all-time records
Date
Kind
Detail
1914-12-02
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
Wettest Day of Each Month
Jun: 92.5 mm (3.6 in)
The wettest day on record for each calendar month at Stony Mountain. The most was 92.5 mm (3.6 in) on 28 June 1878.
Record daily precipitation for each month at Stony Mountain
Month
Record daily precipitation (mm)
Date
Jan
30.5 mm (1.2 in)
28 January 1916
Feb
33.0 mm (1.3 in)
18 February 1884
Mar
30.5 mm (1.2 in)
25 March 1890
Apr
38.1 mm (1.5 in)
26 April 1879
May
65.0 mm (2.6 in)
11 May 1911
Jun
92.5 mm (3.6 in)
28 June 1878
Jul
89.7 mm (3.5 in)
8 July 1911
Aug
57.2 mm (2.3 in)
27 August 1890
Sep
82.6 mm (3.3 in)
6 September 1890
Oct
38.1 mm (1.5 in)
25 October 1915
Nov
38.1 mm (1.5 in)
5 November 1882
Dec
40.6 mm (1.6 in)
2 December 1914
Period of Record Coverage
1878 to 1919
Complete yearUnder 90 percent of days
41 years of record at Stony Mountain, 1878 to 1919. 10 years have data for under 90 percent of days and are left out of rankings: 1881, 1883, 1892, 1894, 1904, 1906, 1907, 1914 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 28 complete years at Stony Mountain, 1879 to 1918. Blue stripes are years cooler than the station's own mean of 1.1 C (33.9 F); red stripes are warmer. The coolest year was 1885, at -0.5 C (31.1 F), and the warmest was 1900, at 2.9 C (37.2 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Stony Mountain as warming stripes, 1879 to 1918
Year
Annual mean temperature
Difference from the station mean
1879
0.0 C
-1.12 C
1880
-0.2 C
-1.24 C
1884
-0.2 C
-1.31 C
1885
-0.5 C
-1.60 C
1886
0.6 C
-0.46 C
1887
-0.3 C
-1.43 C
1888
0.4 C
-0.71 C
1889
2.7 C
+1.58 C
1890
1.2 C
+0.14 C
1891
0.6 C
-0.48 C
1895
0.5 C
-0.63 C
1896
0.2 C
-0.86 C
1897
0.9 C
-0.19 C
1898
1.5 C
+0.38 C
1899
1.0 C
-0.07 C
1900
2.9 C
+1.83 C
1901
2.1 C
+1.00 C
1902
2.0 C
+0.88 C
1903
0.9 C
-0.20 C
1905
1.3 C
+0.23 C
1908
2.8 C
+1.69 C
1909
1.2 C
+0.15 C
1910
2.1 C
+1.05 C
1912
1.0 C
-0.05 C
1913
1.7 C
+0.58 C
1915
2.6 C
+1.51 C
1917
0.0 C
-1.08 C
1918
1.4 C
+0.28 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
1878 to 1919
Yearly extremes at Stony Mountain: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1886
33.3 C (91.9 F)
41
Coldest night (TNn)
-46.7 C (-52.1 F)
1879
-40.6 C (-41.1 F)
40
Wettest day (Rx1day)
92.5 mm (3.6 in)
1878
38.1 mm (1.5 in)
40
Wettest five days (Rx5day)
120.6 mm (4.7 in)
1901
60.0 mm (2.4 in)
40
Longest dry spell (CDD)
87 days
1891
31 days
40
Hottest day (TXx)
The hottest day of the year at Stony Mountain, 1878 to 1919. The record is 40.0 C (104.0 F) in 1886, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Stony Mountain by year
Year
Hottest day (TXx)
1878
32.8 C (91.0 F)
1879
31.7 C (89.1 F)
1880
31.1 C (88.0 F)
1881
33.3 C (91.9 F)
1882
32.2 C (90.0 F)
1883
34.4 C (93.9 F)
1884
33.3 C (91.9 F)
1885
32.2 C (90.0 F)
1886
40.0 C (104.0 F)
1887
33.3 C (91.9 F)
1888
36.1 C (97.0 F)
1889
38.9 C (102.0 F)
1890
40.0 C (104.0 F)
1891
31.1 C (88.0 F)
1892
7.8 C (46.0 F)
1894
35.6 C (96.1 F)
1895
31.7 C (89.1 F)
1896
32.2 C (90.0 F)
1897
33.9 C (93.0 F)
1898
32.8 C (91.0 F)
1899
30.6 C (87.1 F)
1900
36.7 C (98.1 F)
1901
32.8 C (91.0 F)
1902
32.2 C (90.0 F)
1903
33.3 C (91.9 F)
1904
31.1 C (88.0 F)
1905
31.1 C (88.0 F)
1906
37.8 C (100.0 F)
1907
32.2 C (90.0 F)
1908
34.4 C (93.9 F)
1909
35.0 C (95.0 F)
1910
38.9 C (102.0 F)
1911
31.7 C (89.1 F)
1912
37.8 C (100.0 F)
1913
35.6 C (96.1 F)
1914
36.1 C (97.0 F)
1915
35.6 C (96.1 F)
1916
35.0 C (95.0 F)
1917
36.7 C (98.1 F)
1918
35.0 C (95.0 F)
1919
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Stony Mountain, 1878 to 1919. The record is -46.7 C (-52.1 F) in 1879, marked on the chart; the median year is -40.6 C (-41.1 F).
Coldest night (TNn) at Stony Mountain by year
Year
Coldest night (TNn)
1878
-37.8 C (-36.0 F)
1879
-46.7 C (-52.1 F)
1880
-40.0 C (-40.0 F)
1881
-40.6 C (-41.1 F)
1882
n/a
1883
-40.6 C (-41.1 F)
1884
-42.8 C (-45.0 F)
1885
-43.3 C (-45.9 F)
1886
-42.8 C (-45.0 F)
1887
-39.4 C (-38.9 F)
1888
-42.8 C (-45.0 F)
1889
-43.3 C (-45.9 F)
1890
-40.0 C (-40.0 F)
1891
-37.8 C (-36.0 F)
1892
-42.8 C (-45.0 F)
1894
-30.0 C (-22.0 F)
1895
-43.3 C (-45.9 F)
1896
-40.6 C (-41.1 F)
1897
-38.3 C (-36.9 F)
1898
-37.2 C (-35.0 F)
1899
-43.3 C (-45.9 F)
1900
-36.1 C (-33.0 F)
1901
-37.2 C (-35.0 F)
1902
-37.2 C (-35.0 F)
1903
-36.7 C (-34.1 F)
1904
-40.0 C (-40.0 F)
1905
-39.4 C (-38.9 F)
1906
-37.8 C (-36.0 F)
1907
-41.1 C (-42.0 F)
1908
-38.9 C (-38.0 F)
1909
-43.3 C (-45.9 F)
1910
-40.0 C (-40.0 F)
1911
-41.1 C (-42.0 F)
1912
-43.9 C (-47.0 F)
1913
-39.4 C (-38.9 F)
1914
-41.7 C (-43.1 F)
1915
-44.4 C (-47.9 F)
1916
-43.9 C (-47.0 F)
1917
-41.1 C (-42.0 F)
1918
-41.1 C (-42.0 F)
1919
-39.4 C (-38.9 F)
Wettest day (Rx1day)
The wettest day of the year at Stony Mountain, 1878 to 1919. The record is 92.5 mm (3.6 in) in 1878, marked on the chart; the median year is 38.1 mm (1.5 in).
Wettest day (Rx1day) at Stony Mountain by year
Year
Wettest day (Rx1day)
1878
92.5 mm (3.6 in)
1879
45.7 mm (1.8 in)
1880
50.5 mm (2.0 in)
1881
25.7 mm (1.0 in)
1882
55.9 mm (2.2 in)
1883
46.5 mm (1.8 in)
1884
76.2 mm (3.0 in)
1885
56.9 mm (2.2 in)
1886
23.6 mm (0.9 in)
1887
23.9 mm (0.9 in)
1888
20.3 mm (0.8 in)
1889
33.0 mm (1.3 in)
1890
82.6 mm (3.3 in)
1891
35.6 mm (1.4 in)
1892
n/a
1894
24.9 mm (1.0 in)
1895
35.6 mm (1.4 in)
1896
24.1 mm (0.9 in)
1897
52.1 mm (2.1 in)
1898
20.3 mm (0.8 in)
1899
31.5 mm (1.2 in)
1900
31.8 mm (1.3 in)
1901
67.3 mm (2.6 in)
1902
30.5 mm (1.2 in)
1903
61.7 mm (2.4 in)
1904
81.3 mm (3.2 in)
1905
34.3 mm (1.4 in)
1906
68.6 mm (2.7 in)
1907
23.9 mm (0.9 in)
1908
33.5 mm (1.3 in)
1909
39.4 mm (1.6 in)
1910
25.4 mm (1.0 in)
1911
89.7 mm (3.5 in)
1912
50.8 mm (2.0 in)
1913
38.1 mm (1.5 in)
1914
40.6 mm (1.6 in)
1915
38.1 mm (1.5 in)
1916
31.8 mm (1.3 in)
1917
38.1 mm (1.5 in)
1918
38.1 mm (1.5 in)
1919
39.4 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Stony Mountain, 1878 to 1919. The record is 120.6 mm (4.7 in) in 1901, marked on the chart; the median year is 60.0 mm (2.4 in).
Wettest five days (Rx5day) at Stony Mountain by year
Year
Wettest five days (Rx5day)
1878
99.1 mm (3.9 in)
1879
80.4 mm (3.2 in)
1880
63.8 mm (2.5 in)
1881
28.4 mm (1.1 in)
1882
83.8 mm (3.3 in)
1883
59.8 mm (2.4 in)
1884
82.6 mm (3.3 in)
1885
56.9 mm (2.2 in)
1886
38.1 mm (1.5 in)
1887
34.6 mm (1.4 in)
1888
33.3 mm (1.3 in)
1889
41.1 mm (1.6 in)
1890
95.3 mm (3.8 in)
1891
72.4 mm (2.9 in)
1892
n/a
1894
69.0 mm (2.7 in)
1895
53.4 mm (2.1 in)
1896
65.7 mm (2.6 in)
1897
88.1 mm (3.5 in)
1898
24.1 mm (0.9 in)
1899
78.7 mm (3.1 in)
1900
60.2 mm (2.4 in)
1901
120.6 mm (4.7 in)
1902
36.1 mm (1.4 in)
1903
65.3 mm (2.6 in)
1904
82.8 mm (3.3 in)
1905
60.9 mm (2.4 in)
1906
92.5 mm (3.6 in)
1907
43.2 mm (1.7 in)
1908
43.0 mm (1.7 in)
1909
39.4 mm (1.6 in)
1910
45.7 mm (1.8 in)
1911
89.7 mm (3.5 in)
1912
88.9 mm (3.5 in)
1913
50.8 mm (2.0 in)
1914
58.4 mm (2.3 in)
1915
65.0 mm (2.6 in)
1916
57.2 mm (2.3 in)
1917
44.6 mm (1.8 in)
1918
50.8 mm (2.0 in)
1919
53.4 mm (2.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Stony Mountain, 1878 to 1919. The record is 87 days in 1891, marked on the chart; the median year is 31 days.
Longest dry spell (CDD) at Stony Mountain by year
Year
Longest dry spell (CDD)
1878
36 days
1879
34 days
1880
28 days
1881
15 days
1882
18 days
1883
31 days
1884
34 days
1885
31 days
1886
38 days
1887
29 days
1888
31 days
1889
26 days
1890
37 days
1891
87 days
1892
n/a
1894
59 days
1895
22 days
1896
12 days
1897
26 days
1898
14 days
1899
25 days
1900
25 days
1901
22 days
1902
33 days
1903
23 days
1904
25 days
1905
34 days
1906
45 days
1907
27 days
1908
35 days
1909
58 days
1910
44 days
1911
27 days
1912
32 days
1913
59 days
1914
34 days
1915
28 days
1916
29 days
1917
30 days
1918
33 days
1919
31 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
28 years with a frost
Across 28 years with a frost, the median last spring frost at Stony Mountain falls on 30 May and the median first autumn frost on 11 September, which leaves a median of 103 days between them.
Fitted over all years, the growing season changes by -1.5 days per decade at this station.
Frost dates and growing season at Stony Mountain
Measure
Median, all years
Earliest period
Recent period (1879 to 1918)
Recent against earliest
Fitted trend
Last spring frost
30 May
n/a
30 May
n/a
+1.5 days per decade
First autumn frost
11 September
n/a
11 September
n/a
0.0 days per decade
Growing days
103 days
n/a
103 days
n/a
-1.5 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.
Download the Data
Data for Stony Mountain standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Stony Mountain 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.