Cascade Tunnel Weather Records (USC00451162)

Record envelope, standing records and threshold days for Cascade Tunnel (USC00451162), Washington, United States, with 35 years of record.

Key Facts for Cascade Tunnel

Cascade Tunnel (USC00451162) is a weather station in Washington, United States at 47.77 latitude and -121.07 longitude, 1,028 m (3,373 ft) above sea level.
The station reports from 1894 to 1928, 35 years of record.
1,464 records set at Cascade Tunnel still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Washington, United States, 47.77 latitude, -121.07 longitude.
Elevation: 1,028 m (3,373 ft).
Period of record: 1894 to 1928, 35 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 Cascade Tunnel. 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 Cascade Tunnel, 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)	-22.2 C (-8.0 F)	n/a	n/a
Feb	18.3 C (64.9 F)	-14.4 C (6.1 F)	n/a	n/a
Mar	17.8 C (64.0 F)	-20.6 C (-5.1 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-11.1 C (12.0 F)	n/a	n/a
May	31.7 C (89.1 F)	-6.7 C (19.9 F)	n/a	n/a
Jun	35.0 C (95.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	43.3 C (109.9 F)	0.6 C (33.1 F)	n/a	n/a
Aug	41.1 C (106.0 F)	-6.7 C (19.9 F)	n/a	n/a
Sep	29.4 C (84.9 F)	-7.8 C (18.0 F)	n/a	n/a
Oct	23.3 C (73.9 F)	-7.8 C (18.0 F)	n/a	n/a
Nov	12.8 C (55.0 F)	-20.0 C (-4.0 F)	n/a	n/a
Dec	12.2 C (54.0 F)	-17.8 C (0.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cascade Tunnel still stand. 1896 holds the most, with 249.

Wettest Day of Each Month

Nov: 152.4 mm (6.0 in)

The wettest day on record for each calendar month at Cascade Tunnel. The most was 152.4 mm (6.0 in) on 2 November 1919.

Record daily precipitation for each month at Cascade Tunnel
Month	Record daily precipitation (mm)	Date
Jan	101.6 mm (4.0 in)	5 January 1896
Feb	81.3 mm (3.2 in)	27 February 1899
Mar	76.2 mm (3.0 in)	24 March 1897
Apr	38.1 mm (1.5 in)	12 April 1896
May	50.8 mm (2.0 in)	22 May 1896
Jun	40.6 mm (1.6 in)	23 June 1899
Jul	20.3 mm (0.8 in)	4 July 1899
Aug	19.6 mm (0.8 in)	29 August 1927
Sep	20.3 mm (0.8 in)	5 September 1927
Oct	51.1 mm (2.0 in)	27 October 1925
Nov	152.4 mm (6.0 in)	2 November 1919
Dec	78.7 mm (3.1 in)	27 December 1897

Period of Record Coverage

1894 to 1928

16 years of record at Cascade Tunnel, 1894 to 1928. 14 years have data for under 90 percent of days and are left out of rankings: 1894, 1897, 1898, 1899, 1918, 1919, 1920, 1921 and others.

Days with data per year at Cascade Tunnel
Year	Days with data	Share of year	Complete
1894	91	25%	No
1895	350	96%	Yes
1896	337	92%	Yes
1897	270	74%	No
1898	176	48%	No
1899	120	33%	No
1918	6	2%	No
1919	4	1%	No
1920	30	8%	No
1921	22	6%	No
1922	1	0%	No
1924	16	4%	No
1925	317	87%	No
1926	218	60%	No
1927	293	80%	No
1928	142	39%	No

Latest Records

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

Extremes by Year

1894 to 1928

Yearly extremes at Cascade Tunnel: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1896	32.2 C (90.0 F)	16
Coldest night (TNn)	-22.2 C (-8.0 F)	1927	-13.8 C (7.1 F)	16
Wettest day (Rx1day)	152.4 mm (6.0 in)	1919	51.1 mm (2.0 in)	13
Wettest five days (Rx5day)	325.1 mm (12.8 in)	1899	162.6 mm (6.4 in)	11
Longest dry spell (CDD)	60 days	1925	22 days	13

Hottest day (TXx)

The hottest day of the year at Cascade Tunnel, 1894 to 1928. The record is 43.3 C (109.9 F) in 1896, marked on the chart; the median year is 32.2 C (90.0 F).

Hottest day (TXx) at Cascade Tunnel by year
Year	Hottest day (TXx)
1894	17.2 C (63.0 F)
1895	32.2 C (90.0 F)
1896	43.3 C (109.9 F)
1897	41.1 C (106.0 F)
1898	35.6 C (96.1 F)
1899	32.2 C (90.0 F)
1915	n/a
1916	n/a
1917	n/a
1918	5.6 C (42.1 F)
1919	4.4 C (39.9 F)
1920	15.6 C (60.1 F)
1921	7.2 C (45.0 F)
1922	-1.1 C (30.0 F)
1923	n/a
1924	3.3 C (37.9 F)
1925	35.0 C (95.0 F)
1926	33.3 C (91.9 F)
1927	34.4 C (93.9 F)
1928	38.3 C (100.9 F)

Coldest night (TNn)

The coldest night of the year at Cascade Tunnel, 1894 to 1928. The record is -22.2 C (-8.0 F) in 1927, marked on the chart; the median year is -13.8 C (7.1 F).

Coldest night (TNn) at Cascade Tunnel by year
Year	Coldest night (TNn)
1894	-17.8 C (0.0 F)
1895	-13.3 C (8.1 F)
1896	-20.6 C (-5.1 F)
1897	-17.8 C (0.0 F)
1898	-15.0 C (5.0 F)
1899	-14.4 C (6.1 F)
1915	n/a
1916	n/a
1917	n/a
1918	-3.3 C (26.1 F)
1919	-11.1 C (12.0 F)
1920	-6.7 C (19.9 F)
1921	-14.4 C (6.1 F)
1922	-13.3 C (8.1 F)
1923	n/a
1924	-11.1 C (12.0 F)
1925	-12.2 C (10.0 F)
1926	-15.6 C (3.9 F)
1927	-22.2 C (-8.0 F)
1928	-3.9 C (25.0 F)

Wettest day (Rx1day)

The wettest day of the year at Cascade Tunnel, 1894 to 1928. The record is 152.4 mm (6.0 in) in 1919, marked on the chart; the median year is 51.1 mm (2.0 in).

Wettest day (Rx1day) at Cascade Tunnel by year
Year	Wettest day (Rx1day)
1894	50.5 mm (2.0 in)
1895	54.1 mm (2.1 in)
1896	101.6 mm (4.0 in)
1897	102.6 mm (4.0 in)
1898	51.1 mm (2.0 in)
1899	81.3 mm (3.2 in)
1915	n/a
1916	0.0 mm (0.00 in)
1917	n/a
1918	n/a
1919	152.4 mm (6.0 in)
1920	n/a
1921	0.0 mm (0.00 in)
1922	n/a
1923	n/a
1924	n/a
1925	51.1 mm (2.0 in)
1926	45.7 mm (1.8 in)
1927	67.8 mm (2.7 in)
1928	46.5 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cascade Tunnel, 1894 to 1928. The record is 325.1 mm (12.8 in) in 1899, marked on the chart; the median year is 162.6 mm (6.4 in).

Wettest five days (Rx5day) at Cascade Tunnel by year
Year	Wettest five days (Rx5day)
1894	136.0 mm (5.4 in)
1895	190.4 mm (7.5 in)
1896	172.6 mm (6.8 in)
1897	245.9 mm (9.7 in)
1898	109.2 mm (4.3 in)
1899	325.1 mm (12.8 in)
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	292.1 mm (11.5 in)
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	138.9 mm (5.5 in)
1926	96.5 mm (3.8 in)
1927	162.6 mm (6.4 in)
1928	121.9 mm (4.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cascade Tunnel, 1894 to 1928. The record is 60 days in 1925, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Cascade Tunnel by year
Year	Longest dry spell (CDD)
1894	8 days
1895	22 days
1896	40 days
1897	14 days
1898	18 days
1899	27 days
1915	n/a
1916	1 day
1917	n/a
1918	n/a
1919	1 day
1920	n/a
1921	1 day
1922	n/a
1923	n/a
1924	n/a
1925	60 days
1926	30 days
1927	28 days
1928	50 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 Cascade Tunnel standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cascade Tunnel 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).