As of 10:30 PDT

Weather in Eureka, CA

53°

Eureka, Monday, 12 October, 10:30

Clear. Feels like 52°. High 65°, low 41°.

Pressure29.94 inHg

Wind7.8 mph NW

Humidity73%

Visibility1.4 mi

Dew point45°

See detailed hourly forecast

Monthly outlook for Eureka, CA: average high 60.1°, average low 49.6°. That is 1.9° below the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 4 days and 2.3 inches. The warmest day looks like 26 October (71.7°), the coolest 13 October (39.1°).

60.1°/49.6°

Average high / low

−1.9°

Below normal

2 / 4

Wet days / normal

0.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 October – 21 October	58.2°	64.2°	-3.3°
22 October – 31 October	63.4°	61.8°	+0.9°
1 November – 10 November	at normal	59.5°	—

October records over 66 years

90.3°10 October 1991All-time high

36.1°31 October 2019All-time low

Climate normals and records are computed from the nearest reference point — Blue Lake (10 mi).

Tue, 1368° / 39°

68 °

Eureka, Tuesday, 13 October

Partly cloudy. High 68°, low 39°.

Pressure30.15 inHg

Wind5.1 mph W

Humidity87%

Visibility0.5 mi

Dew point48°

Wed, 1456° / 49°

56 °

Eureka, Wednesday, 14 October

Mostly clear. High 56°, low 49°.

Pressure30.18 inHg

Wind3.2 mph NW

Humidity89%

Visibility2.6 mi

Dew point49°

Thu, 1557° / 51°

57 °

Eureka, Thursday, 15 October

Mostly clear. High 57°, low 51°.

Pressure30.12 inHg

Wind6.4 mph NW

Humidity88%

Visibility6.2 mi

Dew point52°

Fri, 1654° / 49°

0.01

54 °

Eureka, Friday, 16 October

Light rain. High 54°, low 49°.

Pressure30.09 inHg

Wind12.7 mph N

Humidity97%

Visibility—

Dew point52°

Sat, 1756° / 51°

56 °

Eureka, Saturday, 17 October

Light rain. High 56°, low 51°.

Pressure30.06 inHg

Wind13.2 mph N

Humidity92%

Visibility—

Dew point53°

Sun, 1859° / 49°

59 °

Eureka, Sunday, 18 October

Partly cloudy. High 59°, low 49°.

Pressure30.03 inHg

Wind7.5 mph NW

Humidity82%

Visibility—

Dew point52°

Mon, 1955° / 48°

0.39

55 °

Eureka, Monday, 19 October

Rain. High 55°, low 48°.

Pressure29.94 inHg

Wind7.9 mph S

Humidity90%

Visibility—

Dew point51°

Tue, 2056° / 47°

0.08

56 °

Eureka, Tuesday, 20 October

Light rain. High 56°, low 47°.

Pressure30.03 inHg

Wind6.4 mph NW

Humidity65%

Visibility—

Dew point43°

Wed, 2156° / 47°

56 °

Eureka, Wednesday, 21 October

Clear. High 56°, low 47°.

Pressure29.97 inHg

Wind11.2 mph N

Humidity66%

Visibility—

Dew point44°

Thu, 2257° / 47°

57 °

Eureka, Thursday, 22 October

Clear. High 57°, low 47°.

Pressure30.03 inHg

Wind7 mph NW

Humidity61%

Visibility—

Dew point42°

Fri, 2357° / 48°

57 °

Eureka, Friday, 23 October

Overcast. High 57°, low 48°.

Pressure30.24 inHg

Wind7 mph SE

Humidity60%

Visibility—

Dew point42°

Sat, 2460° / 53°

60 °

Eureka, Saturday, 24 October

Clear. High 60°, low 53°.

Pressure30.30 inHg

Wind9.3 mph N

Humidity80%

Visibility—

Dew point52°

Sun, 2565° / 53°

65 °

Eureka, Sunday, 25 October

Clear. High 65°, low 53°.

Pressure30.06 inHg

Wind6.8 mph NW

Humidity56%

Visibility—

Dew point47°

Mon, 2672° / 59°

72 °

Eureka, Monday, 26 October

Clear. High 72°, low 59°.

Pressure30.03 inHg

Wind6.4 mph E

Humidity37%

Visibility—

Dew point42°

Tue, 2770° / 61°

70 °

Eureka, Tuesday, 27 October

Overcast. High 70°, low 61°.

Pressure30.00 inHg

Wind5.6 mph E

Humidity45%

Visibility—

Dew point45°

From day 17 onward the outlook is built from 60-year climate statistics

Wed, 2860° / 48°

0.19

60 °

Eureka, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high60°

Average low48°

Average precipitation0.19 in

Chance of precipitation35%

Record high79° (2003)

Record low38° (2019)

Thu, 2960° / 48°

0.19

60 °

Eureka, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high60°

Average low48°

Average precipitation0.19 in

Chance of precipitation30%

Record high75° (1993)

Record low38° (1971)

Fri, 3061° / 47°

0.19

61 °

Eureka, Friday, 30 October

Climate normal for this date — 60-year average.

Average high61°

Average low47°

Average precipitation0.19 in

Chance of precipitation33%

Record high74° (1967)

Record low38° (2002)

Sat, 3161° / 47°

0.13

61 °

Eureka, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high61°

Average low47°

Average precipitation0.13 in

Chance of precipitation25%

Record high78° (1966)

Record low36° (2019)

Sun, 0161° / 47°

0.2

61 °

Eureka, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high61°

Average low47°

Average precipitation0.2 in

Chance of precipitation32%

Record high74° (1966)

Record low38° (2019)

Mon, 0261° / 48°

0.2

61 °

Eureka, Monday, 2 November

Climate normal for this date — 60-year average.

Average high61°

Average low48°

Average precipitation0.2 in

Chance of precipitation35%

Record high72° (1986)

Record low40° (1971)

Tue, 0361° / 48°

0.18

61 °

Eureka, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high61°

Average low48°

Average precipitation0.18 in

Chance of precipitation32%

Record high74° (1986)

Record low34° (2022)

Wed, 0460° / 48°

0.18

60 °

Eureka, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high60°

Average low48°

Average precipitation0.18 in

Chance of precipitation37%

Record high73° (1986)

Record low37° (2003)

Thu, 0560° / 48°

0.26

60 °

Eureka, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high60°

Average low48°

Average precipitation0.26 in

Chance of precipitation40%

Record high74° (2012)

Record low37° (2017)

Fri, 0659° / 48°

0.28

59 °

Eureka, Friday, 6 November

Climate normal for this date — 60-year average.

Average high59°

Average low48°

Average precipitation0.28 in

Chance of precipitation50%

Record high71° (1978)

Record low37° (2017)

Sat, 0759° / 47°

0.24

59 °

Eureka, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high59°

Average low47°

Average precipitation0.24 in

Chance of precipitation42%

Record high69° (2016)

Record low35° (2017)

Sun, 0858° / 46°

0.25

58 °

Eureka, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high58°

Average low46°

Average precipitation0.25 in

Chance of precipitation47%

Record high72° (1976)

Record low36° (2018)

Mon, 0957° / 46°

0.24

57 °

Eureka, Monday, 9 November

Climate normal for this date — 60-year average.

Average high57°

Average low46°

Average precipitation0.24 in

Chance of precipitation50%

Record high72° (1996)

Record low31° (2020)

Tue, 1058° / 46°

0.22

58 °

Eureka, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high58°

Average low46°

Average precipitation0.22 in

Chance of precipitation43%

Record high69° (1996)

Record low32° (2022)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Eureka, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Eureka, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.