Reva Weather Records (USC00397150)

Record envelope, standing records and threshold days for Reva (USC00397150), South Dakota, United States, with 31 years of record.

Key Facts for Reva

Reva (USC00397150) is a weather station in South Dakota, United States at 45.55 latitude and -103.08 longitude, n/a above sea level.
The station reports from 1911 to 1941, 31 years of record.
1,464 records set at Reva still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: South Dakota, United States, 45.55 latitude, -103.08 longitude.
Elevation: n/a.
Period of record: 1911 to 1941, 31 years.
Eligible elements: none yet.

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 Reva. 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 Reva, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.3 C (64.9 F)	-40.0 C (-40.0 F)	n/a	n/a
Feb	18.3 C (64.9 F)	-41.7 C (-43.1 F)	n/a	n/a
Mar	25.6 C (78.1 F)	-30.0 C (-22.0 F)	n/a	n/a
Apr	32.2 C (90.0 F)	-23.9 C (-11.0 F)	n/a	n/a
May	39.4 C (102.9 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	42.2 C (108.0 F)	-3.3 C (26.1 F)	n/a	n/a
Jul	45.0 C (113.0 F)	-3.9 C (25.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	-2.2 C (28.0 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-9.4 C (15.1 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-24.4 C (-11.9 F)	n/a	n/a
Nov	23.9 C (75.0 F)	-31.1 C (-24.0 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-35.6 C (-32.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Reva still stand. 1936 holds the most, with 101.

Standing records at Reva by the year they were set
Year set	Standing records
1911	45
1912	48
1913	47
1914	38
1915	46
1916	62
1917	63
1918	75
1919	84
1920	45
1921	54
1922	54
1923	26
1924	40
1925	15
1926	16
1927	63
1928	43
1929	39
1930	45
1931	51
1932	53
1933	33
1934	65
1935	37
1936	101
1937	50
1938	37
1939	53
1940	25
1941	11

Wettest Day of Each Month

Sep: 116.3 mm (4.6 in)

The wettest day on record for each calendar month at Reva. The most was 116.3 mm (4.6 in) on 13 September 1928.

Record daily precipitation for each month at Reva
Month	Record daily precipitation (mm)	Date
Jan	35.1 mm (1.4 in)	5 January 1916
Feb	44.2 mm (1.7 in)	23 February 1922
Mar	61.5 mm (2.4 in)	30 March 1916
Apr	58.7 mm (2.3 in)	8 April 1919
May	69.1 mm (2.7 in)	26 May 1929
Jun	55.9 mm (2.2 in)	12 June 1915
Jul	63.8 mm (2.5 in)	28 July 1914
Aug	42.9 mm (1.7 in)	5 August 1918
Sep	116.3 mm (4.6 in)	13 September 1928
Oct	37.8 mm (1.5 in)	22 October 1914
Nov	47.8 mm (1.9 in)	5 November 1922
Dec	34.8 mm (1.4 in)	1 December 1927

Period of Record Coverage

1911 to 1941

31 years of record at Reva, 1911 to 1941. 10 years have data for under 90 percent of days and are left out of rankings: 1911, 1922, 1924, 1925, 1926, 1927, 1930, 1931 and others.

Days with data per year at Reva
Year	Days with data	Share of year	Complete
1911	212	58%	No
1912	361	99%	Yes
1913	340	93%	Yes
1914	345	95%	Yes
1915	363	99%	Yes
1916	366	100%	Yes
1917	361	99%	Yes
1918	361	99%	Yes
1919	364	100%	Yes
1920	365	100%	Yes
1921	360	99%	Yes
1922	302	83%	No
1923	332	91%	Yes
1924	298	81%	No
1925	133	36%	No
1926	151	41%	No
1927	321	88%	No
1928	353	96%	Yes
1929	340	93%	Yes
1930	319	87%	No
1931	319	87%	No
1932	359	98%	Yes
1933	354	97%	Yes
1934	359	98%	Yes
1935	352	96%	Yes
1936	358	98%	Yes
1937	352	96%	Yes
1938	354	97%	Yes
1939	355	97%	Yes
1940	299	82%	No
1941	130	36%	No

Latest Records

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

Climate Trend

17 complete years, 1912 to 1939

One stripe for each of 17 complete years at Reva, 1912 to 1939. Blue stripes are years cooler than the station's own mean of 6.6 C (43.8 F); red stripes are warmer. The coolest year was 1917, at 4.4 C (39.9 F), and the warmest was 1934, at 8.6 C (47.5 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Reva as warming stripes, 1912 to 1939
Year	Annual mean temperature	Difference from the station mean
1912	5.6 C	-1.01 C
1915	5.7 C	-0.82 C
1916	4.6 C	-1.93 C
1917	4.4 C	-2.18 C
1918	6.6 C	+0.02 C
1919	6.5 C	-0.07 C
1920	6.5 C	-0.06 C
1921	7.8 C	+1.27 C
1928	7.1 C	+0.50 C
1932	5.7 C	-0.90 C
1933	7.2 C	+0.65 C
1934	8.6 C	+2.03 C
1935	7.1 C	+0.52 C
1936	6.4 C	-0.14 C
1937	5.7 C	-0.91 C
1938	8.1 C	+1.49 C
1939	8.0 C	+1.48 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

1911 to 1941

Yearly extremes at Reva: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1936	38.3 C (100.9 F)	31
Coldest night (TNn)	-41.7 C (-43.1 F)	1936	-34.4 C (-29.9 F)	31
Wettest day (Rx1day)	116.3 mm (4.6 in)	1928	43.2 mm (1.7 in)	31
Wettest five days (Rx5day)	125.2 mm (4.9 in)	1928	56.6 mm (2.2 in)	31
Longest dry spell (CDD)	72 days	1936	47 days	31

Hottest day (TXx)

The hottest day of the year at Reva, 1911 to 1941. The record is 45.0 C (113.0 F) in 1936, marked on the chart; the median year is 38.3 C (100.9 F).

Hottest day (TXx) at Reva by year
Year	Hottest day (TXx)
1911	37.8 C (100.0 F)
1912	37.8 C (100.0 F)
1913	37.8 C (100.0 F)
1914	41.7 C (107.1 F)
1915	34.4 C (93.9 F)
1916	37.2 C (99.0 F)
1917	37.8 C (100.0 F)
1918	38.3 C (100.9 F)
1919	41.7 C (107.1 F)
1920	36.7 C (98.1 F)
1921	42.8 C (109.0 F)
1922	37.2 C (99.0 F)
1923	35.6 C (96.1 F)
1924	38.3 C (100.9 F)
1925	38.3 C (100.9 F)
1926	37.8 C (100.0 F)
1927	36.7 C (98.1 F)
1928	37.8 C (100.0 F)
1929	40.6 C (105.1 F)
1930	41.7 C (107.1 F)
1931	42.8 C (109.0 F)
1932	40.0 C (104.0 F)
1933	41.1 C (106.0 F)
1934	41.1 C (106.0 F)
1935	41.7 C (107.1 F)
1936	45.0 C (113.0 F)
1937	42.8 C (109.0 F)
1938	40.0 C (104.0 F)
1939	40.0 C (104.0 F)
1940	40.0 C (104.0 F)
1941	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Reva, 1911 to 1941. The record is -41.7 C (-43.1 F) in 1936, marked on the chart; the median year is -34.4 C (-29.9 F).

Coldest night (TNn) at Reva by year
Year	Coldest night (TNn)
1911	-33.9 C (-29.0 F)
1912	-36.7 C (-34.1 F)
1913	-34.4 C (-29.9 F)
1914	-34.4 C (-29.9 F)
1915	-35.6 C (-32.1 F)
1916	-40.0 C (-40.0 F)
1917	-37.2 C (-35.0 F)
1918	-37.2 C (-35.0 F)
1919	-35.6 C (-32.1 F)
1920	-33.9 C (-29.0 F)
1921	-31.1 C (-24.0 F)
1922	-36.1 C (-33.0 F)
1923	-31.1 C (-24.0 F)
1924	-34.4 C (-29.9 F)
1925	-28.3 C (-18.9 F)
1926	-17.8 C (0.0 F)
1927	-34.4 C (-29.9 F)
1928	-35.6 C (-32.1 F)
1929	-35.6 C (-32.1 F)
1930	-35.6 C (-32.1 F)
1931	-23.3 C (-9.9 F)
1932	-31.7 C (-25.1 F)
1933	-38.9 C (-38.0 F)
1934	-31.1 C (-24.0 F)
1935	-33.3 C (-27.9 F)
1936	-41.7 C (-43.1 F)
1937	-34.4 C (-29.9 F)
1938	-35.6 C (-32.1 F)
1939	-36.1 C (-33.0 F)
1940	-33.9 C (-29.0 F)
1941	-26.1 C (-15.0 F)

Wettest day (Rx1day)

The wettest day of the year at Reva, 1911 to 1941. The record is 116.3 mm (4.6 in) in 1928, marked on the chart; the median year is 43.2 mm (1.7 in).

Wettest day (Rx1day) at Reva by year
Year	Wettest day (Rx1day)
1911	25.9 mm (1.0 in)
1912	33.0 mm (1.3 in)
1913	58.4 mm (2.3 in)
1914	63.8 mm (2.5 in)
1915	55.9 mm (2.2 in)
1916	61.5 mm (2.4 in)
1917	51.8 mm (2.0 in)
1918	42.9 mm (1.7 in)
1919	58.7 mm (2.3 in)
1920	64.8 mm (2.6 in)
1921	43.2 mm (1.7 in)
1922	47.8 mm (1.9 in)
1923	39.6 mm (1.6 in)
1924	36.3 mm (1.4 in)
1925	30.5 mm (1.2 in)
1926	43.2 mm (1.7 in)
1927	64.0 mm (2.5 in)
1928	116.3 mm (4.6 in)
1929	69.1 mm (2.7 in)
1930	20.3 mm (0.8 in)
1931	44.5 mm (1.8 in)
1932	28.7 mm (1.1 in)
1933	56.6 mm (2.2 in)
1934	30.5 mm (1.2 in)
1935	37.6 mm (1.5 in)
1936	17.0 mm (0.7 in)
1937	45.5 mm (1.8 in)
1938	40.1 mm (1.6 in)
1939	24.1 mm (0.9 in)
1940	24.4 mm (1.0 in)
1941	22.9 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Reva, 1911 to 1941. The record is 125.2 mm (4.9 in) in 1928, marked on the chart; the median year is 56.6 mm (2.2 in).

Wettest five days (Rx5day) at Reva by year
Year	Wettest five days (Rx5day)
1911	28.0 mm (1.1 in)
1912	76.4 mm (3.0 in)
1913	66.0 mm (2.6 in)
1914	65.6 mm (2.6 in)
1915	79.6 mm (3.1 in)
1916	65.6 mm (2.6 in)
1917	51.8 mm (2.0 in)
1918	73.1 mm (2.9 in)
1919	58.7 mm (2.3 in)
1920	83.6 mm (3.3 in)
1921	52.1 mm (2.1 in)
1922	53.4 mm (2.1 in)
1923	41.9 mm (1.6 in)
1924	43.5 mm (1.7 in)
1925	50.5 mm (2.0 in)
1926	79.7 mm (3.1 in)
1927	104.2 mm (4.1 in)
1928	125.2 mm (4.9 in)
1929	101.1 mm (4.0 in)
1930	28.7 mm (1.1 in)
1931	62.3 mm (2.5 in)
1932	42.9 mm (1.7 in)
1933	69.1 mm (2.7 in)
1934	40.6 mm (1.6 in)
1935	55.1 mm (2.2 in)
1936	20.5 mm (0.8 in)
1937	57.7 mm (2.3 in)
1938	56.6 mm (2.2 in)
1939	43.7 mm (1.7 in)
1940	45.5 mm (1.8 in)
1941	40.9 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Reva, 1911 to 1941. The record is 72 days in 1936, marked on the chart; the median year is 47 days.

Longest dry spell (CDD) at Reva by year
Year	Longest dry spell (CDD)
1911	30 days
1912	38 days
1913	55 days
1914	47 days
1915	34 days
1916	26 days
1917	57 days
1918	40 days
1919	47 days
1920	41 days
1921	47 days
1922	48 days
1923	55 days
1924	39 days
1925	24 days
1926	29 days
1927	34 days
1928	47 days
1929	28 days
1930	49 days
1931	41 days
1932	46 days
1933	35 days
1934	59 days
1935	48 days
1936	72 days
1937	54 days
1938	40 days
1939	60 days
1940	57 days
1941	59 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 Reva standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Reva 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).