Chessman Rsvr Weather Records (USC00241686)

Record envelope, standing records and threshold days for Chessman Rsvr (USC00241686), Montana, United States, with 56 years of record.

Key Facts for Chessman Rsvr

Chessman Rsvr (USC00241686) is a weather station in Montana, United States at 46.47 latitude and -112.18 longitude, 1,915 m (6,283 ft) above sea level.
The station reports from 1908 to 1963, 56 years of record.
1,464 records set at Chessman Rsvr still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Montana, United States, 46.47 latitude, -112.18 longitude.
Elevation: 1,915 m (6,283 ft).
Period of record: 1908 to 1963, 56 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 Chessman Rsvr. 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 Chessman Rsvr, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.7 C (53.1 F)	-40.6 C (-41.1 F)	n/a	n/a
Feb	12.8 C (55.0 F)	-41.7 C (-43.1 F)	n/a	n/a
Mar	16.1 C (61.0 F)	-33.9 C (-29.0 F)	n/a	n/a
Apr	24.4 C (75.9 F)	-33.3 C (-27.9 F)	n/a	n/a
May	27.2 C (81.0 F)	-12.8 C (9.0 F)	n/a	n/a
Jun	30.6 C (87.1 F)	-5.6 C (21.9 F)	n/a	n/a
Jul	35.0 C (95.0 F)	-1.7 C (28.9 F)	n/a	n/a
Aug	33.9 C (93.0 F)	-6.1 C (21.0 F)	n/a	n/a
Sep	27.2 C (81.0 F)	-7.8 C (18.0 F)	n/a	n/a
Oct	23.9 C (75.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Nov	18.9 C (66.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-34.4 C (-29.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chessman Rsvr still stand. 1936 holds the most, with 174.

Wettest Day of Each Month

May: 85.6 mm (3.4 in)

The wettest day on record for each calendar month at Chessman Rsvr. The most was 85.6 mm (3.4 in) on 19 May 1938.

Record daily precipitation for each month at Chessman Rsvr
Month	Record daily precipitation (mm)	Date
Jan	15.2 mm (0.6 in)	11 January 1938
Feb	15.5 mm (0.6 in)	28 February 1953
Mar	23.4 mm (0.9 in)	9 March 1935
Apr	20.6 mm (0.8 in)	16 April 1941
May	85.6 mm (3.4 in)	19 May 1938
Jun	45.7 mm (1.8 in)	12 June 1913
Jul	25.4 mm (1.0 in)	27 July 1909
Aug	25.4 mm (1.0 in)	13 August 1910
Sep	28.2 mm (1.1 in)	21 September 1937
Oct	39.4 mm (1.6 in)	11 October 1911
Nov	18.3 mm (0.7 in)	21 November 1940
Dec	23.6 mm (0.9 in)	12 December 1937

Period of Record Coverage

1908 to 1963

16 years of record at Chessman Rsvr, 1908 to 1963. 6 years have data for under 90 percent of days and are left out of rankings: 1908, 1913, 1941, 1952, 1953, 1963.

Days with data per year at Chessman Rsvr
Year	Days with data	Share of year	Complete
1908	60	16%	No
1909	358	98%	Yes
1910	365	100%	Yes
1911	364	100%	Yes
1912	366	100%	Yes
1913	180	49%	No
1935	364	100%	Yes
1936	359	98%	Yes
1937	348	95%	Yes
1938	354	97%	Yes
1939	355	97%	Yes
1940	351	96%	Yes
1941	203	56%	No
1952	124	34%	No
1953	86	24%	No
1963	1	0%	No

Latest Records

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

Extremes by Year

1908 to 1963

Yearly extremes at Chessman Rsvr: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1936	28.6 C (83.5 F)	16
Coldest night (TNn)	-41.7 C (-43.1 F)	1936	-35.3 C (-31.5 F)	16
Wettest day (Rx1day)	85.6 mm (3.4 in)	1938	25.4 mm (1.0 in)	16
Wettest five days (Rx5day)	139.7 mm (5.5 in)	1938	47.0 mm (1.9 in)	15
Longest dry spell (CDD)	32 days	1935	22 days	16

Hottest day (TXx)

The hottest day of the year at Chessman Rsvr, 1908 to 1963. The record is 35.0 C (95.0 F) in 1936, marked on the chart; the median year is 28.6 C (83.5 F).

Hottest day (TXx) at Chessman Rsvr by year
Year	Hottest day (TXx)
1908	16.1 C (61.0 F)
1909	29.4 C (84.9 F)
1910	30.0 C (86.0 F)
1911	27.8 C (82.0 F)
1912	28.3 C (82.9 F)
1913	25.0 C (77.0 F)
1935	32.2 C (90.0 F)
1936	35.0 C (95.0 F)
1937	31.1 C (88.0 F)
1938	27.2 C (81.0 F)
1939	29.4 C (84.9 F)
1940	33.9 C (93.0 F)
1941	28.9 C (84.0 F)
1952	26.7 C (80.1 F)
1953	13.9 C (57.0 F)
1963	5.6 C (42.1 F)

Coldest night (TNn)

The coldest night of the year at Chessman Rsvr, 1908 to 1963. The record is -41.7 C (-43.1 F) in 1936, marked on the chart; the median year is -35.3 C (-31.5 F).

Coldest night (TNn) at Chessman Rsvr by year
Year	Coldest night (TNn)
1908	-24.4 C (-11.9 F)
1909	-38.9 C (-38.0 F)
1910	-38.9 C (-38.0 F)
1911	-34.4 C (-29.9 F)
1912	-29.4 C (-20.9 F)
1913	-35.0 C (-31.0 F)
1935	-40.6 C (-41.1 F)
1936	-41.7 C (-43.1 F)
1937	-39.4 C (-38.9 F)
1938	-36.7 C (-34.1 F)
1939	-40.0 C (-40.0 F)
1940	-35.6 C (-32.1 F)
1941	-24.4 C (-11.9 F)
1952	-21.7 C (-7.1 F)
1953	-22.2 C (-8.0 F)
1963	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Chessman Rsvr, 1908 to 1963. The record is 85.6 mm (3.4 in) in 1938, marked on the chart; the median year is 25.4 mm (1.0 in).

Wettest day (Rx1day) at Chessman Rsvr by year
Year	Wettest day (Rx1day)
1908	7.6 mm (0.30 in)
1909	27.9 mm (1.1 in)
1910	26.7 mm (1.1 in)
1911	39.4 mm (1.6 in)
1912	43.4 mm (1.7 in)
1913	45.7 mm (1.8 in)
1935	23.4 mm (0.9 in)
1936	24.1 mm (0.9 in)
1937	33.0 mm (1.3 in)
1938	85.6 mm (3.4 in)
1939	22.6 mm (0.9 in)
1940	20.6 mm (0.8 in)
1941	40.4 mm (1.6 in)
1952	19.8 mm (0.8 in)
1953	15.5 mm (0.6 in)
1963	0.0 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chessman Rsvr, 1908 to 1963. The record is 139.7 mm (5.5 in) in 1938, marked on the chart; the median year is 47.0 mm (1.9 in).

Wettest five days (Rx5day) at Chessman Rsvr by year
Year	Wettest five days (Rx5day)
1908	8.2 mm (0.32 in)
1909	59.8 mm (2.4 in)
1910	41.7 mm (1.6 in)
1911	47.0 mm (1.9 in)
1912	55.1 mm (2.2 in)
1913	57.6 mm (2.3 in)
1935	26.5 mm (1.0 in)
1936	47.7 mm (1.9 in)
1937	49.7 mm (2.0 in)
1938	139.7 mm (5.5 in)
1939	36.1 mm (1.4 in)
1940	40.2 mm (1.6 in)
1941	79.8 mm (3.1 in)
1952	28.9 mm (1.1 in)
1953	20.8 mm (0.8 in)
1963	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Chessman Rsvr, 1908 to 1963. The record is 32 days in 1935, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Chessman Rsvr by year
Year	Longest dry spell (CDD)
1908	17 days
1909	21 days
1910	23 days
1911	16 days
1912	17 days
1913	18 days
1935	32 days
1936	23 days
1937	26 days
1938	22 days
1939	32 days
1940	24 days
1941	19 days
1952	29 days
1953	10 days
1963	1 day

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 Chessman Rsvr standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chessman Rsvr 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 2026-10-16 (16 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).