Tomah Rs 2 Weather Records (USC00478515)

Record envelope, standing records and threshold days for Tomah Rs 2 (USC00478515), Wisconsin, United States, with 91 years of record.

Key Facts for Tomah Rs 2

Tomah Rs 2 (USC00478515) is a weather station in Wisconsin, United States at 43.97 latitude and -90.47 longitude, 296 m (972 ft) above sea level.
The station reports from 1936 to 2026, 91 years of record.
720 records set at Tomah Rs 2 still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Wisconsin, United States, 43.97 latitude, -90.47 longitude.
Elevation: 296 m (972 ft).
Period of record: 1936 to 2026, 91 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 Tomah Rs 2. 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 Tomah Rs 2, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	5.6 C (42.1 F)	-32.8 C (-27.0 F)	n/a	n/a
Feb	6.7 C (44.1 F)	-37.2 C (-35.0 F)	n/a	n/a
Mar	20.6 C (69.1 F)	-32.8 C (-27.0 F)	n/a	n/a
Apr	16.7 C (62.1 F)	-11.1 C (12.0 F)	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	23.3 C (73.9 F)	-18.3 C (-0.9 F)	n/a	n/a
Dec	11.7 C (53.1 F)	-30.0 C (-22.0 F)	n/a	n/a

Which Years Hold Standing Records

720 standing records

720 records at Tomah Rs 2 still stand. 1939 holds the most, with 296.

Wettest Day of Each Month

Jun: 139.7 mm (5.5 in)

The wettest day on record for each calendar month at Tomah Rs 2. The most was 139.7 mm (5.5 in) on 24 June 2025.

Record daily precipitation for each month at Tomah Rs 2
Month	Record daily precipitation (mm)	Date
Jan	29.2 mm (1.1 in)	5 January 1939
Feb	19.1 mm (0.8 in)	28 February 1939
Mar	27.9 mm (1.1 in)	29 March 1938
Apr	36.3 mm (1.4 in)	21 April 2025
May	41.4 mm (1.6 in)	21 May 2025
Jun	139.7 mm (5.5 in)	24 June 2025
Jul	36.8 mm (1.4 in)	8 July 1951
Aug	37.3 mm (1.5 in)	28 August 1950
Sep	81.3 mm (3.2 in)	16 September 1941
Oct	25.1 mm (1.0 in)	7 October 1950
Nov	34.3 mm (1.4 in)	19 November 1948
Dec	14.5 mm (0.6 in)	30 December 1936

Period of Record Coverage

1936 to 1939

4 years of record at Tomah Rs 2, 1936 to 1939. 4 years have data for under 90 percent of days and are left out of rankings: 1936, 1937, 1938, 1939.

Latest Records

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

Extremes by Year

1936 to 2026

Yearly extremes at Tomah Rs 2: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	23.3 C (73.9 F)	1938	15.3 C (59.5 F)	4
Coldest night (TNn)	-37.2 C (-35.0 F)	1938	-33.9 C (-29.0 F)	4
Wettest day (Rx1day)	139.7 mm (5.5 in)	2025	36.8 mm (1.4 in)	11
Wettest five days (Rx5day)	128.5 mm (5.1 in)	1941	47.4 mm (1.9 in)	8
Longest dry spell (CDD)	27 days	1949	15 days	11

Hottest day (TXx)

The hottest day of the year at Tomah Rs 2, 1936 to 2026. The record is 23.3 C (73.9 F) in 1938, marked on the chart; the median year is 15.3 C (59.5 F).

Coldest night (TNn)

The coldest night of the year at Tomah Rs 2, 1936 to 2026. The record is -37.2 C (-35.0 F) in 1938, marked on the chart; the median year is -33.9 C (-29.0 F).

Coldest night (TNn) at Tomah Rs 2 by year
Year	Coldest night (TNn)
1936	-29.4 C (-20.9 F)
1937	-32.8 C (-27.0 F)
1938	-37.2 C (-35.0 F)
1939	-35.0 C (-31.0 F)
1941	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Tomah Rs 2, 1936 to 2026. The record is 139.7 mm (5.5 in) in 2025, marked on the chart; the median year is 36.8 mm (1.4 in).

Wettest day (Rx1day) at Tomah Rs 2 by year
Year	Wettest day (Rx1day)
1936	14.5 mm (0.6 in)
1937	14.7 mm (0.6 in)
1938	27.9 mm (1.1 in)
1939	29.2 mm (1.1 in)
1941	81.3 mm (3.2 in)
1948	34.3 mm (1.4 in)
1949	40.4 mm (1.6 in)
1950	37.3 mm (1.5 in)
1951	36.8 mm (1.4 in)
2025	139.7 mm (5.5 in)
2026	64.0 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tomah Rs 2, 1936 to 2026. The record is 128.5 mm (5.1 in) in 1941, marked on the chart; the median year is 47.4 mm (1.9 in).

Wettest five days (Rx5day) at Tomah Rs 2 by year
Year	Wettest five days (Rx5day)
1936	4.6 mm (0.18 in)
1937	n/a
1938	49.0 mm (1.9 in)
1939	37.1 mm (1.5 in)
1941	128.5 mm (5.1 in)
1948	34.6 mm (1.4 in)
1949	45.7 mm (1.8 in)
1950	84.4 mm (3.3 in)
1951	64.5 mm (2.5 in)
2025	n/a
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Tomah Rs 2, 1936 to 2026. The record is 27 days in 1949, marked on the chart; the median year is 15 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 Tomah Rs 2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tomah Rs 2 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Year	Longest dry spell (CDD)
1936	2 days
1937	2 days
1938	26 days
1939	20 days
1941	17 days
1948	15 days
1949	27 days
1950	19 days
1951	14 days
2025	1 day
2026	1 day

Days with data per year at Tomah Rs 2
Year	Days with data	Share of year	Complete
1936	43	12%	No
1937	54	15%	No
1938	146	40%	No
1939	141	39%	No