Rapid City Forrest Weather Records (CA005012333)

Record envelope, standing records and threshold days for Rapid City Forrest (CA005012333), Manitoba, Canada, with 55 years of record.

Key Facts for Rapid City Forrest

Rapid City Forrest (CA005012333) is a weather station in Manitoba, Canada at 50.02 latitude and -100.00 longitude, 488 m (1,601 ft) above sea level.
The station reports from 1885 to 1939, 55 years of record.
1,464 records set at Rapid City Forrest still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Rapid City Forrest tied a monthly record daily precipitation of 25.4 mm (1.0 in) on 18 February 1939.

About the Station

Location: Manitoba, Canada, 50.02 latitude, -100.00 longitude.
Elevation: 488 m (1,601 ft).
Period of record: 1885 to 1939, 55 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 Rapid City Forrest. 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 Rapid City Forrest, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	8.9 C (48.0 F)	-45.0 C (-49.0 F)	n/a	n/a
Feb	10.0 C (50.0 F)	-43.9 C (-47.0 F)	n/a	n/a
Mar	16.1 C (61.0 F)	-36.1 C (-33.0 F)	n/a	n/a
Apr	29.4 C (84.9 F)	-24.4 C (-11.9 F)	n/a	n/a
May	35.6 C (96.1 F)	-15.6 C (3.9 F)	n/a	n/a
Jun	40.6 C (105.1 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	41.7 C (107.1 F)	0.0 C (32.0 F)	n/a	n/a
Aug	37.2 C (99.0 F)	-1.1 C (30.0 F)	n/a	n/a
Sep	35.6 C (96.1 F)	-11.1 C (12.0 F)	n/a	n/a
Oct	29.4 C (84.9 F)	-22.8 C (-9.0 F)	n/a	n/a
Nov	18.9 C (66.0 F)	-31.1 C (-24.0 F)	n/a	n/a
Dec	6.1 C (43.0 F)	-44.4 C (-47.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rapid City Forrest still stand. 1936 holds the most, with 124.

Standing records at Rapid City Forrest by the year they were set
Year set	Standing records
1922	79
1923	105
1924	84
1925	104
1926	82
1927	65
1928	72
1929	96
1930	83
1931	97
1932	83
1933	64
1934	95
1935	72
1936	124
1937	65
1938	71
1939	23

All-Time Record Progression

2 new records

2 all-time records were set at Rapid City Forrest between 20 March 1925 and 6 March 1935. Each dot is a new record.

When Rapid City Forrest set new all-time records
Date	Kind	Detail
1925-03-20	Record daily snowfall	Record daily snowfall 33.0 cm (13.0 in)
1935-03-06	Record daily snowfall	Record daily snowfall 38.1 cm (15.0 in)

Wettest Day of Each Month

Jul: 95.5 mm (3.8 in)

The wettest day on record for each calendar month at Rapid City Forrest. The most was 95.5 mm (3.8 in) on 7 July 1911.

Record daily precipitation for each month at Rapid City Forrest
Month	Record daily precipitation (mm)	Date
Jan	26.7 mm (1.1 in)	18 January 1920
Feb	25.4 mm (1.0 in)	2 February 1893
Mar	38.1 mm (1.5 in)	6 March 1935
Apr	86.4 mm (3.4 in)	27 April 1906
May	56.4 mm (2.2 in)	17 May 1903
Jun	76.2 mm (3.0 in)	27 June 1891
Jul	95.5 mm (3.8 in)	7 July 1911
Aug	82.6 mm (3.3 in)	10 August 1907
Sep	59.7 mm (2.4 in)	13 September 1903
Oct	76.2 mm (3.0 in)	3 October 1911
Nov	25.4 mm (1.0 in)	18 November 1922
Dec	30.7 mm (1.2 in)	7 December 1909

Period of Record Coverage

1922 to 1939

18 years of record at Rapid City Forrest, 1922 to 1939. 3 years have data for under 90 percent of days and are left out of rankings: 1922, 1938, 1939.

Days with data per year at Rapid City Forrest
Year	Days with data	Share of year	Complete
1922	305	84%	No
1923	364	100%	Yes
1924	364	99%	Yes
1925	363	99%	Yes
1926	361	99%	Yes
1927	340	93%	Yes
1928	363	99%	Yes
1929	348	95%	Yes
1930	364	100%	Yes
1931	364	100%	Yes
1932	366	100%	Yes
1933	364	100%	Yes
1934	364	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	363	99%	Yes
1938	303	83%	No
1939	120	33%	No

Latest Records

Latest records at Rapid City Forrest
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 February 1939	Rapid City Forrest, CA	monthly rain (Tie)	25.4 mm (1.0 in)	tie	46 years	7 of 100 (Routine)
18 February 1939	Rapid City Forrest, CA	monthly snowfall (Tie)	25.4 cm (10.0 in)	tie	46 years	7 of 100 (Routine)
12 February 1939	Rapid City Forrest, CA	daily rain	7.6 mm (0.30 in)	3.8 mm (0.15 in)	24 years	20 of 100 (Routine)
12 February 1939	Rapid City Forrest, CA	daily snowfall	7.6 cm (3.0 in)	3.8 cm (1.5 in)	24 years	20 of 100 (Routine)
25 December 1938	Rapid City Forrest, CA	daily rain	27.9 mm (1.1 in)	20.3 mm (0.8 in)	50 years	60 of 100 (Major)
25 December 1938	Rapid City Forrest, CA	daily snowfall	27.9 cm (11.0 in)	20.3 cm (8.0 in)	50 years	60 of 100 (Major)
31 October 1938	Rapid City Forrest, CA	daily rain (Tie)	17.8 mm (0.7 in)	tie	37 years	4 of 100 (Routine)
17 October 1938	Rapid City Forrest, CA	daily snowfall	15.2 cm (6.0 in)	8.8 cm (3.5 in)	20 years	26 of 100 (Routine)
17 October 1938	Rapid City Forrest, CA	daily rain	15.2 mm (0.6 in)	8.3 mm (0.33 in)	12 years	17 of 100 (Routine)
29 March 1938	Rapid City Forrest, CA	daily rain	10.2 mm (0.4 in)	6.9 mm (0.27 in)	28 years	20 of 100 (Routine)
10 February 1938	Rapid City Forrest, CA	daily rain	17.8 mm (0.7 in)	14.0 mm (0.6 in)	42 years	20 of 100 (Routine)
10 February 1938	Rapid City Forrest, CA	daily snowfall	17.8 cm (7.0 in)	14.0 cm (5.5 in)	42 years	50 of 100 (Notable)
8 February 1938	Rapid City Forrest, CA	daily rain	11.4 mm (0.4 in)	5.3 mm (0.21 in)	30 years	20 of 100 (Routine)
8 February 1938	Rapid City Forrest, CA	daily snowfall	11.4 cm (4.5 in)	5.3 cm (2.1 in)	30 years	26 of 100 (Routine)
3 February 1938	Rapid City Forrest, CA	daily rain	3.3 mm (0.13 in)	2.5 mm (0.10 in)	4 years	11 of 100 (Routine)
3 February 1938	Rapid City Forrest, CA	daily snowfall	3.3 cm (1.3 in)	2.5 cm (1.0 in)	4 years	11 of 100 (Routine)
20 December 1937	Rapid City Forrest, CA	daily rain	3.8 mm (0.15 in)	0.5 mm (0.02 in)	28 years	14 of 100 (Routine)
20 December 1937	Rapid City Forrest, CA	daily snowfall	3.8 cm (1.5 in)	0.5 cm (0.2 in)	28 years	14 of 100 (Routine)
19 December 1937	Rapid City Forrest, CA	daily rain	12.7 mm (0.5 in)	5.1 mm (0.20 in)	24 years	20 of 100 (Routine)
19 December 1937	Rapid City Forrest, CA	daily snowfall	12.7 cm (5.0 in)	5.1 cm (2.0 in)	24 years	22 of 100 (Routine)

Climate Trend

12 complete years, 1923 to 1936

One stripe for each of 12 complete years at Rapid City Forrest, 1923 to 1936. Blue stripes are years cooler than the station's own mean of 1.3 C (34.3 F); red stripes are warmer. The coolest year was 1924, at 0.1 C (32.2 F), and the warmest was 1931, at 3.9 C (38.9 F). The strongest colour marks a difference of 2.6 C (4.7 F).

Annual mean temperature at Rapid City Forrest as warming stripes, 1923 to 1936
Year	Annual mean temperature	Difference from the station mean
1923	1.0 C	-0.29 C
1924	0.1 C	-1.17 C
1925	2.0 C	+0.65 C
1926	1.4 C	+0.05 C
1928	2.6 C	+1.25 C
1930	0.9 C	-0.45 C
1931	3.9 C	+2.55 C
1932	0.9 C	-0.43 C
1933	0.6 C	-0.70 C
1934	2.0 C	+0.74 C
1935	0.2 C	-1.13 C
1936	0.3 C	-1.04 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

1885 to 1939

Yearly extremes at Rapid City Forrest: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	1936	34.4 C (93.9 F)	18
Coldest night (TNn)	-45.0 C (-49.0 F)	1936	-38.6 C (-37.5 F)	18
Wettest day (Rx1day)	95.5 mm (3.8 in)	1911	40.9 mm (1.6 in)	54
Wettest five days (Rx5day)	145.8 mm (5.7 in)	1935	54.9 mm (2.2 in)	54
Longest dry spell (CDD)	59 days	1900	32 days	54

Hottest day (TXx)

The hottest day of the year at Rapid City Forrest, 1885 to 1939. The record is 41.7 C (107.1 F) in 1936, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Rapid City Forrest by year
Year	Hottest day (TXx)
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	35.0 C (95.0 F)
1923	33.3 C (91.9 F)
1924	29.4 C (84.9 F)
1925	32.8 C (91.0 F)
1926	35.6 C (96.1 F)
1927	29.4 C (84.9 F)
1928	35.6 C (96.1 F)
1929	34.4 C (93.9 F)
1930	33.3 C (91.9 F)
1931	40.6 C (105.1 F)
1932	32.8 C (91.0 F)
1933	37.2 C (99.0 F)
1934	36.1 C (97.0 F)
1935	32.2 C (90.0 F)
1936	41.7 C (107.1 F)
1937	37.2 C (99.0 F)
1938	34.4 C (93.9 F)
1939	27.8 C (82.0 F)

Coldest night (TNn)

The coldest night of the year at Rapid City Forrest, 1885 to 1939. The record is -45.0 C (-49.0 F) in 1936, marked on the chart; the median year is -38.6 C (-37.5 F).

Coldest night (TNn) at Rapid City Forrest by year
Year	Coldest night (TNn)
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	-35.6 C (-32.1 F)
1923	-38.9 C (-38.0 F)
1924	-37.8 C (-36.0 F)
1925	-38.9 C (-38.0 F)
1926	-37.8 C (-36.0 F)
1927	-40.0 C (-40.0 F)
1928	-35.0 C (-31.0 F)
1929	-38.3 C (-36.9 F)
1930	-40.6 C (-41.1 F)
1931	-32.8 C (-27.0 F)
1932	-37.8 C (-36.0 F)
1933	-42.8 C (-45.0 F)
1934	-44.4 C (-47.9 F)
1935	-40.0 C (-40.0 F)
1936	-45.0 C (-49.0 F)
1937	-38.3 C (-36.9 F)
1938	-37.2 C (-35.0 F)
1939	-41.7 C (-43.1 F)

Wettest day (Rx1day)

The wettest day of the year at Rapid City Forrest, 1885 to 1939. The record is 95.5 mm (3.8 in) in 1911, marked on the chart; the median year is 40.9 mm (1.6 in).

Wettest day (Rx1day) at Rapid City Forrest by year
Year	Wettest day (Rx1day)
1885	38.1 mm (1.5 in)
1886	30.5 mm (1.2 in)
1887	41.7 mm (1.6 in)
1888	61.0 mm (2.4 in)
1889	45.5 mm (1.8 in)
1890	39.4 mm (1.6 in)
1891	76.2 mm (3.0 in)
1892	49.5 mm (1.9 in)
1893	25.4 mm (1.0 in)
1894	41.1 mm (1.6 in)
1895	39.4 mm (1.6 in)
1896	44.5 mm (1.8 in)
1897	22.9 mm (0.9 in)
1898	50.8 mm (2.0 in)
1899	55.9 mm (2.2 in)
1900	33.0 mm (1.3 in)
1902	7.6 mm (0.30 in)
1903	59.7 mm (2.4 in)
1904	40.6 mm (1.6 in)
1905	38.1 mm (1.5 in)
1906	86.4 mm (3.4 in)
1907	82.6 mm (3.3 in)
1908	39.6 mm (1.6 in)
1909	33.3 mm (1.3 in)
1910	27.7 mm (1.1 in)
1911	95.5 mm (3.8 in)
1912	52.3 mm (2.1 in)
1913	70.4 mm (2.8 in)
1914	44.7 mm (1.8 in)
1915	24.9 mm (1.0 in)
1916	38.9 mm (1.5 in)
1917	26.4 mm (1.0 in)
1918	47.0 mm (1.9 in)
1919	37.1 mm (1.5 in)
1920	52.1 mm (2.1 in)
1921	38.1 mm (1.5 in)
1922	61.0 mm (2.4 in)
1923	30.5 mm (1.2 in)
1924	45.7 mm (1.8 in)
1925	33.0 mm (1.3 in)
1926	50.8 mm (2.0 in)
1927	32.0 mm (1.3 in)
1928	41.9 mm (1.6 in)
1929	25.4 mm (1.0 in)
1930	51.3 mm (2.0 in)
1931	30.5 mm (1.2 in)
1932	45.2 mm (1.8 in)
1933	47.0 mm (1.9 in)
1934	17.8 mm (0.7 in)
1935	71.1 mm (2.8 in)
1936	31.8 mm (1.3 in)
1937	41.9 mm (1.6 in)
1938	27.9 mm (1.1 in)
1939	25.4 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rapid City Forrest, 1885 to 1939. The record is 145.8 mm (5.7 in) in 1935, marked on the chart; the median year is 54.9 mm (2.2 in).

Wettest five days (Rx5day) at Rapid City Forrest by year
Year	Wettest five days (Rx5day)
1885	45.3 mm (1.8 in)
1886	35.6 mm (1.4 in)
1887	94.5 mm (3.7 in)
1888	61.0 mm (2.4 in)
1889	45.5 mm (1.8 in)
1890	55.9 mm (2.2 in)
1891	95.3 mm (3.8 in)
1892	69.9 mm (2.8 in)
1893	38.1 mm (1.5 in)
1894	53.6 mm (2.1 in)
1895	49.3 mm (1.9 in)
1896	70.1 mm (2.8 in)
1897	34.8 mm (1.4 in)
1898	54.6 mm (2.1 in)
1899	97.3 mm (3.8 in)
1900	78.2 mm (3.1 in)
1902	7.6 mm (0.30 in)
1903	59.7 mm (2.4 in)
1904	58.4 mm (2.3 in)
1905	67.1 mm (2.6 in)
1906	101.7 mm (4.0 in)
1907	92.8 mm (3.7 in)
1908	42.1 mm (1.7 in)
1909	49.1 mm (1.9 in)
1910	35.8 mm (1.4 in)
1911	105.6 mm (4.2 in)
1912	55.6 mm (2.2 in)
1913	104.7 mm (4.1 in)
1914	50.6 mm (2.0 in)
1915	35.8 mm (1.4 in)
1916	63.3 mm (2.5 in)
1917	26.4 mm (1.0 in)
1918	51.6 mm (2.0 in)
1919	55.9 mm (2.2 in)
1920	53.4 mm (2.1 in)
1921	42.2 mm (1.7 in)
1922	63.3 mm (2.5 in)
1923	39.6 mm (1.6 in)
1924	59.2 mm (2.3 in)
1925	58.7 mm (2.3 in)
1926	78.0 mm (3.1 in)
1927	47.5 mm (1.9 in)
1928	79.5 mm (3.1 in)
1929	33.0 mm (1.3 in)
1930	75.7 mm (3.0 in)
1931	35.6 mm (1.4 in)
1932	57.4 mm (2.3 in)
1933	55.1 mm (2.2 in)
1934	22.9 mm (0.9 in)
1935	145.8 mm (5.7 in)
1936	38.9 mm (1.5 in)
1937	53.4 mm (2.1 in)
1938	31.2 mm (1.2 in)
1939	25.4 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rapid City Forrest, 1885 to 1939. The record is 59 days in 1900, marked on the chart; the median year is 32 days.

Longest dry spell (CDD) at Rapid City Forrest by year
Year	Longest dry spell (CDD)
1885	21 days
1886	33 days
1887	35 days
1888	41 days
1889	28 days
1890	28 days
1891	30 days
1892	29 days
1893	37 days
1894	43 days
1895	35 days
1896	35 days
1897	44 days
1898	55 days
1899	44 days
1900	59 days
1902	10 days
1903	42 days
1904	15 days
1905	53 days
1906	32 days
1907	48 days
1908	24 days
1909	30 days
1910	38 days
1911	26 days
1912	29 days
1913	40 days
1914	41 days
1915	40 days
1916	32 days
1917	48 days
1918	25 days
1919	31 days
1920	22 days
1921	20 days
1922	27 days
1923	22 days
1924	23 days
1925	32 days
1926	16 days
1927	18 days
1928	48 days
1929	20 days
1930	29 days
1931	37 days
1932	25 days
1933	26 days
1934	42 days
1935	31 days
1936	27 days
1937	28 days
1938	36 days
1939	48 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.

Rainfall Return Levels

46 years, 1886 to 1938

A day with at least 40.7 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 102.5 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Rapid City Forrest: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.7 mm (1.6 in)
5 years	55.3 mm (2.2 in)
10 years	65.7 mm (2.6 in)
25 years	79.7 mm (3.1 in)
50 years	90.8 mm (3.6 in)	Longer than the 46 years of record
100 years	102.5 mm (4.0 in)	Longer than the 46 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, 46 years of values from 1886 to 1938.

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: 95.5 mm (3.8 in) in 1911; 86.4 mm (3.4 in) in 1906; 82.6 mm (3.3 in) in 1907.

Download the Data

Data for Rapid City Forrest standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rapid City Forrest 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).