Eureka weather by month
What a typical year looks like in Eureka, Nevada: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Eureka Airport, 11 km from Eureka; records cover 1963–2026.
The year at a glance
- Precipitation a year
- 9.1 in231 mm
- Snow a year
- Rare
- Last spring freeze
- Jun 14
- First fall freeze
- Sep 10
- Heating degree days
- 7,154
- Cooling degree days
- 356
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Eureka in January
Highs average 39°4° and lows 13°−11°, with 0.8 in20 mm of precipitation in a typical January.
- Record high
- 63°17° (2003)
- Record low
- −36°−38° (1982)
- Heating degree days
- 1212
- Cooling degree days
- 0
Eureka in February
Highs average 43°6° and lows 16°−9°, with 0.78 in20 mm of precipitation in a typical February.
- Record high
- 69°21° (2015)
- Record low
- −37°−38° (1982)
- Heating degree days
- 994
- Cooling degree days
- 0
Eureka in March
Highs average 52°11° and lows 24°−5°, with 0.97 in25 mm of precipitation in a typical March.
- Record high
- 84°29° (2026)
- Record low
- −33°−36° (1969)
- Heating degree days
- 839
- Cooling degree days
- 0
Eureka in April
Highs average 59°15° and lows 28°−2°, with 1.1 in27 mm of precipitation in a typical April.
- Record high
- 86°30° (2012)
- Record low
- −3°−19° (1982)
- Heating degree days
- 646
- Cooling degree days
- 0
Eureka in May
Highs average 69°20° and lows 35°2°, with 1.2 in29 mm of precipitation in a typical May.
- Record high
- 95°35° (2003)
- Record low
- 9°−13° (1965)
- Heating degree days
- 407
- Cooling degree days
- 4
Eureka in June
Highs average 81°27° and lows 42°6°, with 0.63 in16 mm of precipitation in a typical June.
- Record high
- 101°38° (2013)
- Record low
- 19°−7° (2001)
- Heating degree days
- 141
- Cooling degree days
- 44
Eureka in July
Highs average 90°32° and lows 50°10°, with 0.58 in15 mm of precipitation in a typical July.
- Record high
- 105°41° (1985)
- Record low
- 26°−3° (1983)
- Heating degree days
- 11
- Cooling degree days
- 166
Eureka in August
Highs average 88°31° and lows 48°9°, with 0.54 in14 mm of precipitation in a typical August.
- Record high
- 101°38° (2026)
- Record low
- 23°−5° (1968)
- Heating degree days
- 24
- Cooling degree days
- 123
Eureka in September
Highs average 78°26° and lows 40°4°, with 0.57 in14 mm of precipitation in a typical September.
- Record high
- 99°37° (2020)
- Record low
- 12°−11° (1968)
- Heating degree days
- 194
- Cooling degree days
- 19
Eureka in OctoberThis month
Highs average 65°18° and lows 29°−2°, with 0.61 in15 mm of precipitation in a typical October.
- Record high
- 93°34° (1980)
- Record low
- −9°−23° (2019)
- Heating degree days
- 564
- Cooling degree days
- 0
Eureka in November
Highs average 50°10° and lows 20°−7°, with 0.64 in16 mm of precipitation in a typical November.
- Record high
- 75°24° (2010)
- Record low
- −14°−26° (2006)
- Heating degree days
- 898
- Cooling degree days
- 0
Eureka in December
Highs average 39°4° and lows 12°−11°, with 0.74 in19 mm of precipitation in a typical December.
- Record high
- 66°19° (2025)
- Record low
- −34°−37° (1990)
- Heating degree days
- 1224
- Cooling degree days
- 0