Hayfork

History

In 1921 the first Trinity County Fair was held with the Governor at the time William Stephens [http://www.trinitymuseum.org/TRINITY%20CHRONOLOGY.htm]

Geography

Hayfork is located at (40.571406, -123.146619) at an elevation of 2310 feet. According to the United States Census Bureau, the CDP has a total area of , of which is land and (0.03%) is water. Hayfork experiences extreme diurnal temperature variation in summer, while in winter the diurnals are wide enough to cause significant air frosts during night. Atypical for an area with such hot summertime temperatures and mild winters, frost usually occurs from mid-September to early June, and frosts throughout the summer are not unheard of. There are an average of 69.8 afternoons with a high over , and 155 mornings that fall below , including 1.7 mornings in June. On average, once every 10 years there will be a frost in July and three out of 10 years there will be one in August. Three times every ten years, the temperature drops below , while daily maxima below occur at an approximately identical frequency. The town sees a mean of 2370.5 growing degree days, with a base temperature of . Despite the USDA zone map showing the town in zone 8, NOAA records show that the town is actually in zone 7b, with the average coldest temperature experienced in a year being . The average hottest temperature in a year is . The record low high temperature is on January 2 and December 18 of 1924, and the record high low temperature is on reached five times: July 19 in 2006, July 22 in 2002, July 26 in 1996, and August 2 and 3 in 2003. There are 80 days with precipitation of over 0.01 inches, 54 over 0.1 inches, 23 over 0.5 inches, and 9 over an inch. The record high monthly snowfall is in January 1916, and traces of snowfall have been seen as late as June 15 in 1950 and as early as October 21 in 1961. Precipitation falls mostly as rain below and mostly as snow above that level,…

Race & ethnicity

Most-observed species

• Common Raven

  Corvus corax Linnaeus, 1758 · Aves
  1,653
• California/Woodhouse's Scrub-Jay

  Aphelocoma californica (Vigors, 1839) · Aves
  1,179
• Acorn Woodpecker

  Melanerpes formicivorus (Swainson, 1827) · Aves
  1,177
• Spotted Towhee

  Pipilo maculatus Swainson, 1827 · Aves
  846
• Song Sparrow

  Melospiza melodia (A.Wilson, 1810) · Aves
  800
• California Quail

  Callipepla californica (Shaw, 1798) · Aves
  675
• Red-winged Blackbird

  Agelaius phoeniceus (Linnaeus, 1766) · Aves
  672
• Golden-crowned Sparrow

  Zonotrichia atricapilla (J.F.Gmelin, 1789) · Aves
  611

Most recent

• M 2.58 — 2026-09-15
  7 km E of Hydesville, CA
• M 3.67 — 2026-09-07
  36 km E of Hydesville, CA
• M 2.65 — 2026-09-03
  15 km SE of Petrolia, CA
• M 2.55 — 2026-08-18
  28 km NW of Weaverville, CA
• M 2.72 — 2026-08-12
  32 km NNW of Covelo, CA
• M 2.54 — 2026-08-11
  9 km E of Rancho Tehama Reserve, CA