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Dayton
Dayton, Washington
Columbia County Courthouse in Dayton
Columbia County Courthouse in Dayton
Location of Dayton, Washington
Location of Dayton, Washington
Country United States
State Washington
County Columbia
Area
 • Total 1.44 sq mi (3.73 km2)
 • Land 1.44 sq mi (3.73 km2)
 • Water 0.00 sq mi (0.00 km2)
Elevation
1,660 ft (506 m)
Population
 (2020)
 • Total 2,448
 • Density 1,700/sq mi (656.3/km2)
Time zone UTC−8 (Pacific (PST))
 • Summer (DST) UTC−7 (PDT)
ZIP code
99328
Area code(s) 509
FIPS code 53-16970
GNIS feature ID 1504356
Website City of Dayton

Dayton is a city in Washington, United States. It is the main town and county seat of Columbia County. In 2020, about 2,448 people lived there.

Dayton's History

Dayton was started in the 1860s. A couple named Jesse N. and Elizabeth Day officially registered the town on November 23, 1871. The city became an official city on November 10, 1881, and was named after Jesse Day.

Dayton is home to some really old buildings! It has the oldest train station in Washington state, which was built in 1881. It also has the oldest courthouse that has been used without stopping since 1887.

In the 1980s and 1990s, the town spent about $3 million to fix up its historic buildings. They repaired the old train station and courthouse. They also made the main street nicer for people to walk on. Because of these efforts, a special area in Dayton is now recognized as a National Historic Landmark District.

Geography and Climate

Dayton covers about 1.43 square miles (3.73 square kilometers) of land. The Touchet River flows right through the city.

Dayton has a special kind of weather called a Mediterranean climate. This means it has hot summers, but the nights are usually cool and pleasant. Winters are chilly but not too harsh, and there isn't a lot of snow. Dayton's winter weather is often milder than other parts of eastern Washington.

It rains a moderate amount for most of the year. However, from July to September, it's very dry. During this time, big wildfires are common in the area because of the hot days and very dry air.

Climate data for Dayton, Washington (1991–2020 normals, extremes 1893–present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 70
(21)
74
(23)
84
(29)
93
(34)
101
(38)
111
(44)
109
(43)
114
(46)
105
(41)
92
(33)
80
(27)
69
(21)
114
(46)
Mean daily maximum °F (°C) 41.5
(5.3)
46.2
(7.9)
53.9
(12.2)
61.1
(16.2)
69.9
(21.1)
76.8
(24.9)
87.6
(30.9)
86.7
(30.4)
77.2
(25.1)
62.9
(17.2)
49.3
(9.6)
40.7
(4.8)
62.8
(17.1)
Daily mean °F (°C) 34.0
(1.1)
37.2
(2.9)
43.4
(6.3)
49.4
(9.7)
57.2
(14.0)
63.4
(17.4)
71.3
(21.8)
70.5
(21.4)
62.2
(16.8)
50.4
(10.2)
40.2
(4.6)
33.6
(0.9)
51.1
(10.6)
Mean daily minimum °F (°C) 26.4
(−3.1)
28.2
(−2.1)
33.0
(0.6)
37.8
(3.2)
44.5
(6.9)
49.9
(9.9)
54.9
(12.7)
54.2
(12.3)
47.2
(8.4)
38.0
(3.3)
31.0
(−0.6)
26.5
(−3.1)
39.3
(4.1)
Record low °F (°C) −22
(−30)
−22
(−30)
2
(−17)
12
(−11)
18
(−8)
22
(−6)
30
(−1)
28
(−2)
18
(−8)
7
(−14)
−10
(−23)
−25
(−32)
−25
(−32)
Average precipitation inches (mm) 2.08
(53)
1.72
(44)
2.24
(57)
1.86
(47)
1.80
(46)
1.24
(31)
0.39
(9.9)
0.45
(11)
0.73
(19)
1.54
(39)
2.43
(62)
2.31
(59)
18.79
(477)
Average snowfall inches (cm) 6.3
(16)
1.9
(4.8)
1.0
(2.5)
0.1
(0.25)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.1
(0.25)
1.2
(3.0)
5.2
(13)
15.8
(40)
Average precipitation days (≥ 0.01 in) 13.5 12.0 13.1 11.6 9.8 7.4 3.1 3.0 5.1 9.9 14.1 14.3 116.9
Average snowy days (≥ 0.1 in) 3.4 2.4 0.9 0.1 0.0 0.0 0.0 0.0 0.0 0.1 1.0 3.6 11.5
Source: NOAA

People of Dayton

Historical population
Census Pop.
1880 996
1890 1,880 88.8%
1900 2,216 17.9%
1910 2,389 7.8%
1920 2,695 12.8%
1930 2,528 −6.2%
1940 3,026 19.7%
1950 2,979 −1.6%
1960 2,913 −2.2%
1970 2,596 −10.9%
1980 2,565 −1.2%
1990 2,468 −3.8%
2000 2,655 7.6%
2010 2,526 −4.9%
2020 2,448 −3.1%
U.S. Decennial Census
2020 Census

In 2010, there were 2,526 people living in Dayton. Most people (about 91.6%) were White. About 7.1% of the people were of Hispanic or Latino background.

The average age of people in Dayton was 46.3 years old. About 21.6% of the residents were under 18 years old.

Education and Library

The schools in Dayton are run by the Dayton School District. This district covers most of Columbia County.

Dayton also has a public library. It is the only public library in Columbia County. The library started in 1919 as a small reading room. People raised money to build a permanent library. In 1937, a public library building was built using special government funding. It was made bigger in 1947.

In 2023, there was a plan to close the library completely. This was because of different opinions about some children's books in the library's collection. The plan was stopped by a court ruling in September 2023. The court said the plan was not fair because it did not include all voters in the area.

Famous People from Dayton

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See also

Kids robot.svg In Spanish: Dayton (Washington) para niños

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