Stony Mountain Weather Records (CA005022790)
Record envelope, standing records and threshold days for Stony Mountain (CA005022790), Manitoba, Canada, with 42 years of record.
Key Facts for Stony Mountain
- Stony Mountain (CA005022790) is a weather station in Manitoba, Canada at 50.07 latitude and -97.23 longitude, 245 m (804 ft) above sea level.
- The station reports from 1878 to 1919, 42 years of record.
- 1,464 records set at Stony Mountain still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Stony Mountain set a daily record precipitation of 10.2 mm (0.4 in) on 20 December 1919.
About the Station
- Location: Manitoba, Canada, 50.07 latitude, -97.23 longitude.
- Elevation: 245 m (804 ft).
- Period of record: 1878 to 1919, 42 years.
- Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
0 days at or beyond a record| 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 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| 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)| 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| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1878 | 363 | 99% | Yes |
| 1879 | 365 | 100% | Yes |
| 1880 | 355 | 97% | Yes |
| 1881 | 270 | 74% | No |
| 1882 | 338 | 93% | Yes |
| 1883 | 314 | 86% | No |
| 1884 | 365 | 100% | Yes |
| 1885 | 361 | 99% | Yes |
| 1886 | 364 | 100% | Yes |
| 1887 | 365 | 100% | Yes |
| 1888 | 366 | 100% | Yes |
| 1889 | 365 | 100% | Yes |
| 1890 | 363 | 99% | Yes |
| 1891 | 361 | 99% | Yes |
| 1892 | 25 | 7% | No |
| 1894 | 184 | 50% | No |
| 1895 | 362 | 99% | Yes |
| 1896 | 363 | 99% | Yes |
| 1897 | 360 | 99% | Yes |
| 1898 | 365 | 100% | Yes |
| 1899 | 363 | 99% | Yes |
| 1900 | 362 | 99% | Yes |
| 1901 | 357 | 98% | Yes |
| 1902 | 352 | 96% | Yes |
| 1903 | 360 | 99% | Yes |
| 1904 | 316 | 86% | No |
| 1905 | 347 | 95% | Yes |
| 1906 | 318 | 87% | No |
| 1907 | 316 | 87% | No |
| 1908 | 347 | 95% | Yes |
| 1909 | 360 | 99% | Yes |
| 1910 | 362 | 99% | Yes |
| 1911 | 343 | 94% | Yes |
| 1912 | 339 | 93% | Yes |
| 1913 | 353 | 97% | Yes |
| 1914 | 324 | 89% | No |
| 1915 | 356 | 98% | Yes |
| 1916 | 270 | 74% | No |
| 1917 | 353 | 97% | Yes |
| 1918 | 345 | 95% | Yes |
| 1919 | 197 | 54% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 20 December 1919 | Stony Mountain, CA | daily rain | 10.2 mm (0.4 in) | 6.4 mm (0.25 in) | 32 years | 20 of 100 (Routine) |
| 20 December 1919 | Stony Mountain, CA | daily snowfall | 10.2 cm (4.0 in) | 6.4 cm (2.5 in) | 32 years | 26 of 100 (Routine) |
| 6 December 1919 | Stony Mountain, CA | daily rain | 7.6 mm (0.30 in) | 5.1 mm (0.20 in) | 0 years | 14 of 100 (Routine) |
| 6 December 1919 | Stony Mountain, CA | daily snowfall | 7.6 cm (3.0 in) | 5.1 cm (2.0 in) | 0 years | 14 of 100 (Routine) |
| 26 November 1919 | Stony Mountain, CA | daily high min | -3.9 C (25.0 F) | 0.5 C (0.9 F) | 19 years | 9 of 100 (Routine) |
| 25 November 1919 | Stony Mountain, CA | daily high min (Tie) | -3.9 C (25.0 F) | tie | 19 years | 2 of 100 (Routine) |
| 24 November 1919 | Stony Mountain, CA | daily high min (Tie) | -5.0 C (23.0 F) | tie | 14 years | 2 of 100 (Routine) |
| 23 November 1919 | Stony Mountain, CA | daily rain (Tie) | 2.5 mm (0.10 in) | tie | 17 years | 2 of 100 (Routine) |
| 23 November 1919 | Stony Mountain, CA | daily snowfall (Tie) | 2.5 cm (1.0 in) | tie | 17 years | 2 of 100 (Routine) |
| 17 November 1919 | Stony Mountain, CA | daily snowfall | 3.0 cm (1.2 in) | 0.5 cm (0.2 in) | 4 years | 6 of 100 (Routine) |
| 13 November 1919 | Stony Mountain, CA | daily high min | 0.0 C (32.0 F) | 2.2 C (4.0 F) | 24 years | 13 of 100 (Routine) |
| 12 November 1919 | Stony Mountain, CA | daily rain | 6.4 mm (0.25 in) | 3.1 mm (0.12 in) | 40 years | 20 of 100 (Routine) |
| 12 November 1919 | Stony Mountain, CA | daily high min | -0.6 C (30.9 F) | 1.6 C (2.9 F) | 31 years | 15 of 100 (Routine) |
| 11 November 1919 | Stony Mountain, CA | daily high min | 0.6 C (33.1 F) | 3.9 C (7.0 F) | 16 years | 13 of 100 (Routine) |
| 9 November 1919 | Stony Mountain, CA | daily high min | 0.0 C (32.0 F) | 1.1 C (2.0 F) | 19 years | 10 of 100 (Routine) |
| 4 November 1919 | Stony Mountain, CA | daily high min | 0.6 C (33.1 F) | 0.6 C (1.1 F) | 20 years | 10 of 100 (Routine) |
| 29 October 1919 | Stony Mountain, CA | daily high min | 6.1 C (43.0 F) | 1.7 C (3.1 F) | 29 years | 15 of 100 (Routine) |
| 28 October 1919 | Stony Mountain, CA | daily high max | 18.3 C (64.9 F) | 1.6 C (2.9 F) | 29 years | 14 of 100 (Routine) |
| 27 October 1919 | Stony Mountain, CA | daily high max | 16.7 C (62.1 F) | 1.1 C (2.0 F) | 29 years | 13 of 100 (Routine) |
| 16 October 1919 | Stony Mountain, CA | daily low min (Tie) | -6.7 C (19.9 F) | tie | 31 years | 3 of 100 (Routine) |
Climate Trend
28 complete years, 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| 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)
| 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)
| 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)
| 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)
| 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)
| 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 frostAcross 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.
| 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
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-17).