Rocky Mountain House Weather Records (CA003015530)

Record envelope, standing records and threshold days for Rocky Mountain House (CA003015530), Alberta, Canada, with 32 years of record.

Key Facts for Rocky Mountain House

Rocky Mountain House (CA003015530) is a weather station in Alberta, Canada at 52.38 latitude and -114.92 longitude, 969 m (3,179 ft) above sea level.
The station reports from 1915 to 1946, 32 years of record.
1,464 records set at Rocky Mountain House still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.

About the Station

Location: Alberta, Canada, 52.38 latitude, -114.92 longitude.
Elevation: 969 m (3,179 ft).
Period of record: 1915 to 1946, 32 years.
Eligible elements: prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Rocky Mountain House. 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 Rocky Mountain House, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-53.9 C (-65.0 F)	n/a	n/a
Feb	15.0 C (59.0 F)	-55.6 C (-68.1 F)	n/a	n/a
Mar	21.1 C (70.0 F)	-44.4 C (-47.9 F)	n/a	n/a
Apr	27.2 C (81.0 F)	-31.7 C (-25.1 F)	n/a	n/a
May	34.4 C (93.9 F)	-13.9 C (7.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	-11.1 C (12.0 F)	n/a	n/a
Jul	36.1 C (97.0 F)	-6.7 C (19.9 F)	n/a	n/a
Aug	32.8 C (91.0 F)	-11.7 C (10.9 F)	n/a	n/a
Sep	30.0 C (86.0 F)	-16.7 C (1.9 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-26.1 C (-15.0 F)	n/a	n/a
Nov	20.0 C (68.0 F)	-40.0 C (-40.0 F)	n/a	n/a
Dec	17.8 C (64.0 F)	-53.9 C (-65.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rocky Mountain House still stand. 1939 holds the most, with 110.

Standing records at Rocky Mountain House by the year they were set
Year set	Standing records
1915	2
1917	40
1918	44
1919	64
1920	62
1921	50
1922	41
1923	29
1924	47
1925	29
1926	39
1927	27
1928	59
1929	41
1930	55
1931	54
1932	68
1933	48
1934	71
1935	65
1936	106
1937	50
1938	55
1939	110
1940	44
1941	46
1942	40
1943	46
1944	18
1945	7
1946	7

Wettest Day of Each Month

Aug: 97.5 mm (3.8 in)

The wettest day on record for each calendar month at Rocky Mountain House. The most was 97.5 mm (3.8 in) on 13 August 1922.

Record daily precipitation for each month at Rocky Mountain House
Month	Record daily precipitation (mm)	Date
Jan	15.2 mm (0.6 in)	18 January 1917
Feb	17.8 mm (0.7 in)	15 February 1929
Mar	33.0 mm (1.3 in)	8 March 1931
Apr	30.5 mm (1.2 in)	3 April 1921
May	42.7 mm (1.7 in)	29 May 1946
Jun	68.6 mm (2.7 in)	30 June 1931
Jul	47.0 mm (1.9 in)	8 July 1922
Aug	97.5 mm (3.8 in)	13 August 1922
Sep	63.2 mm (2.5 in)	5 September 1926
Oct	34.0 mm (1.3 in)	2 October 1915
Nov	22.9 mm (0.9 in)	5 November 1935
Dec	21.6 mm (0.9 in)	20 December 1941

Period of Record Coverage

1915 to 1946

31 years of record at Rocky Mountain House, 1915 to 1946. 9 years have data for under 90 percent of days and are left out of rankings: 1915, 1919, 1923, 1941, 1942, 1943, 1944, 1945 and others.

Days with data per year at Rocky Mountain House
Year	Days with data	Share of year	Complete
1915	108	30%	No
1917	347	95%	Yes
1918	364	100%	Yes
1919	304	83%	No
1920	366	100%	Yes
1921	331	91%	Yes
1922	365	100%	Yes
1923	305	84%	No
1924	364	99%	Yes
1925	364	100%	Yes
1926	334	92%	Yes
1927	365	100%	Yes
1928	336	92%	Yes
1929	335	92%	Yes
1930	334	92%	Yes
1931	364	100%	Yes
1932	364	99%	Yes
1933	334	92%	Yes
1934	334	92%	Yes
1935	364	100%	Yes
1936	364	99%	Yes
1937	362	99%	Yes
1938	337	92%	Yes
1939	362	99%	Yes
1940	365	100%	Yes
1941	304	83%	No
1942	184	50%	No
1943	242	66%	No
1944	183	50%	No
1945	91	25%	No
1946	61	17%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

10 complete years, 1918 to 1939

One stripe for each of 10 complete years at Rocky Mountain House, 1918 to 1939. Blue stripes are years cooler than the station's own mean of 1.0 C (33.8 F); red stripes are warmer. The coolest year was 1932, at -2.6 C (27.4 F), and the warmest was 1939, at 3.9 C (38.9 F). The strongest colour marks a difference of 3.6 C (6.5 F).

Annual mean temperature at Rocky Mountain House as warming stripes, 1918 to 1939
Year	Annual mean temperature	Difference from the station mean
1918	2.4 C	+1.37 C
1922	1.1 C	+0.14 C
1924	0.9 C	-0.12 C
1925	1.5 C	+0.51 C
1927	-0.1 C	-1.13 C
1931	2.4 C	+1.44 C
1932	-2.6 C	-3.54 C
1936	-0.8 C	-1.83 C
1937	1.3 C	+0.31 C
1939	3.9 C	+2.87 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

1915 to 1946

Yearly extremes at Rocky Mountain House: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.1 C (97.0 F)	1924	31.1 C (88.0 F)	31
Coldest night (TNn)	-55.6 C (-68.1 F)	1936	-42.2 C (-44.0 F)	31
Wettest day (Rx1day)	97.5 mm (3.8 in)	1922	39.9 mm (1.6 in)	31
Wettest five days (Rx5day)	140.2 mm (5.5 in)	1922	64.6 mm (2.5 in)	31
Longest dry spell (CDD)	50 days	1923	27 days	31

Hottest day (TXx)

The hottest day of the year at Rocky Mountain House, 1915 to 1946. The record is 36.1 C (97.0 F) in 1924, marked on the chart; the median year is 31.1 C (88.0 F).

Hottest day (TXx) at Rocky Mountain House by year
Year	Hottest day (TXx)
1915	27.8 C (82.0 F)
1917	30.6 C (87.1 F)
1918	31.7 C (89.1 F)
1919	32.8 C (91.0 F)
1920	32.8 C (91.0 F)
1921	33.9 C (93.0 F)
1922	32.8 C (91.0 F)
1923	29.4 C (84.9 F)
1924	36.1 C (97.0 F)
1925	31.1 C (88.0 F)
1926	31.7 C (89.1 F)
1927	31.1 C (88.0 F)
1928	35.0 C (95.0 F)
1929	33.3 C (91.9 F)
1930	30.0 C (86.0 F)
1931	27.8 C (82.0 F)
1932	25.0 C (77.0 F)
1933	28.9 C (84.0 F)
1934	31.1 C (88.0 F)
1935	29.4 C (84.9 F)
1936	30.0 C (86.0 F)
1937	31.7 C (89.1 F)
1938	31.1 C (88.0 F)
1939	31.7 C (89.1 F)
1940	27.8 C (82.0 F)
1941	32.8 C (91.0 F)
1942	31.7 C (89.1 F)
1943	30.6 C (87.1 F)
1944	29.4 C (84.9 F)
1945	27.8 C (82.0 F)
1946	31.7 C (89.1 F)

Coldest night (TNn)

The coldest night of the year at Rocky Mountain House, 1915 to 1946. The record is -55.6 C (-68.1 F) in 1936, marked on the chart; the median year is -42.2 C (-44.0 F).

Coldest night (TNn) at Rocky Mountain House by year
Year	Coldest night (TNn)
1915	-23.9 C (-11.0 F)
1917	-42.8 C (-45.0 F)
1918	-46.1 C (-51.0 F)
1919	-42.2 C (-44.0 F)
1920	-48.3 C (-54.9 F)
1921	-42.2 C (-44.0 F)
1922	-40.6 C (-41.1 F)
1923	-40.0 C (-40.0 F)
1924	-53.9 C (-65.0 F)
1925	-39.4 C (-38.9 F)
1926	-35.6 C (-32.1 F)
1927	-45.6 C (-50.1 F)
1928	-47.2 C (-53.0 F)
1929	-53.3 C (-63.9 F)
1930	-48.9 C (-56.0 F)
1931	-40.0 C (-40.0 F)
1932	-48.3 C (-54.9 F)
1933	-42.8 C (-45.0 F)
1934	-46.1 C (-51.0 F)
1935	-53.9 C (-65.0 F)
1936	-55.6 C (-68.1 F)
1937	-39.4 C (-38.9 F)
1938	-37.8 C (-36.0 F)
1939	-47.8 C (-54.0 F)
1940	-42.2 C (-44.0 F)
1941	-30.6 C (-23.1 F)
1942	-2.8 C (27.0 F)
1943	-46.7 C (-52.1 F)
1944	-13.3 C (8.1 F)
1945	-7.8 C (18.0 F)
1946	-6.7 C (19.9 F)

Wettest day (Rx1day)

The wettest day of the year at Rocky Mountain House, 1915 to 1946. The record is 97.5 mm (3.8 in) in 1922, marked on the chart; the median year is 39.9 mm (1.6 in).

Wettest day (Rx1day) at Rocky Mountain House by year
Year	Wettest day (Rx1day)
1915	43.7 mm (1.7 in)
1917	35.1 mm (1.4 in)
1918	44.5 mm (1.8 in)
1919	27.9 mm (1.1 in)
1920	52.6 mm (2.1 in)
1921	30.5 mm (1.2 in)
1922	97.5 mm (3.8 in)
1923	45.2 mm (1.8 in)
1924	22.9 mm (0.9 in)
1925	59.7 mm (2.4 in)
1926	63.2 mm (2.5 in)
1927	32.0 mm (1.3 in)
1928	60.2 mm (2.4 in)
1929	30.5 mm (1.2 in)
1930	41.9 mm (1.6 in)
1931	68.6 mm (2.7 in)
1932	44.7 mm (1.8 in)
1933	46.2 mm (1.8 in)
1934	27.9 mm (1.1 in)
1935	35.1 mm (1.4 in)
1936	27.9 mm (1.1 in)
1937	25.7 mm (1.0 in)
1938	41.9 mm (1.6 in)
1939	28.2 mm (1.1 in)
1940	33.8 mm (1.3 in)
1941	24.4 mm (1.0 in)
1942	46.0 mm (1.8 in)
1943	25.9 mm (1.0 in)
1944	39.9 mm (1.6 in)
1945	28.4 mm (1.1 in)
1946	42.7 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rocky Mountain House, 1915 to 1946. The record is 140.2 mm (5.5 in) in 1922, marked on the chart; the median year is 64.6 mm (2.5 in).

Wettest five days (Rx5day) at Rocky Mountain House by year
Year	Wettest five days (Rx5day)
1915	84.1 mm (3.3 in)
1917	70.8 mm (2.8 in)
1918	48.2 mm (1.9 in)
1919	30.5 mm (1.2 in)
1920	58.0 mm (2.3 in)
1921	52.9 mm (2.1 in)
1922	140.2 mm (5.5 in)
1923	76.4 mm (3.0 in)
1924	30.5 mm (1.2 in)
1925	121.7 mm (4.8 in)
1926	129.0 mm (5.1 in)
1927	53.6 mm (2.1 in)
1928	80.8 mm (3.2 in)
1929	33.0 mm (1.3 in)
1930	77.2 mm (3.0 in)
1931	99.6 mm (3.9 in)
1932	95.8 mm (3.8 in)
1933	79.7 mm (3.1 in)
1934	35.1 mm (1.4 in)
1935	71.1 mm (2.8 in)
1936	30.0 mm (1.2 in)
1937	58.7 mm (2.3 in)
1938	88.4 mm (3.5 in)
1939	58.5 mm (2.3 in)
1940	59.7 mm (2.4 in)
1941	38.9 mm (1.5 in)
1942	61.0 mm (2.4 in)
1943	59.7 mm (2.4 in)
1944	97.0 mm (3.8 in)
1945	64.6 mm (2.5 in)
1946	84.1 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rocky Mountain House, 1915 to 1946. The record is 50 days in 1923, marked on the chart; the median year is 27 days.

Longest dry spell (CDD) at Rocky Mountain House by year
Year	Longest dry spell (CDD)
1915	21 days
1917	32 days
1918	30 days
1919	30 days
1920	38 days
1921	41 days
1922	22 days
1923	50 days
1924	35 days
1925	32 days
1926	46 days
1927	27 days
1928	44 days
1929	23 days
1930	21 days
1931	29 days
1932	22 days
1933	26 days
1934	26 days
1935	32 days
1936	22 days
1937	29 days
1938	23 days
1939	23 days
1940	18 days
1941	20 days
1942	29 days
1943	22 days
1944	33 days
1945	27 days
1946	21 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.

Download the Data

Data for Rocky Mountain House standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rocky Mountain House 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.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).