As of 15:03 PDT

Weather in Eureka, CA

61°

Eureka, Saturday, 10 October, 15:03

Clear. Feels like 60°. High 63°, low 51°.

Pressure29.74 inHg

Wind8 mph N

Humidity61%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

Monthly outlook for Eureka, CA: average high 59.9°, average low 50.8°. That is 2.2° below the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 2.2 inches. The warmest day looks like 25 October (64.1°), the coolest 11 October (48.7°).

59.9°/50.8°

Average high / low

−2.2°

Below normal

0 / 4

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	59.3°	64.5°	-2.8°
20 October – 29 October	60.9°	62.3°	-0.7°
30 October – 8 November	at normal	60.2°	—

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).

Sun, 1161° / 49°

61 °

Eureka, Sunday, 11 October

Clear. High 61°, low 49°.

Pressure29.65 inHg

Wind21.9 mph N

Humidity77%

Visibility6.2 mi

Dew point49°

Mon, 1258° / 49°

58 °

Eureka, Monday, 12 October

Clear. High 58°, low 49°.

Pressure29.91 inHg

Wind14.1 mph NW

Humidity72%

Visibility6.2 mi

Dew point46°

Tue, 1355° / 49°

55 °

Eureka, Tuesday, 13 October

Clear. High 55°, low 49°.

Pressure30.09 inHg

Wind5.4 mph NW

Humidity82%

Visibility6.2 mi

Dew point48°

Wed, 1455° / 50°

55 °

Eureka, Wednesday, 14 October

Clear. High 55°, low 50°.

Pressure30.12 inHg

Wind1.7 mph NW

Humidity86%

Visibility6.2 mi

Dew point49°

Thu, 1555° / 49°

55 °

Eureka, Thursday, 15 October

Overcast. High 55°, low 49°.

Pressure30.09 inHg

Wind5.3 mph NW

Humidity91%

Visibility—

Dew point52°

Fri, 1662° / 50°

62 °

Eureka, Friday, 16 October

Mostly clear. High 62°, low 50°.

Pressure30.15 inHg

Wind8 mph NW

Humidity67%

Visibility—

Dew point50°

Sat, 1761° / 51°

61 °

Eureka, Saturday, 17 October

Overcast. High 61°, low 51°.

Pressure30.09 inHg

Wind5.7 mph N

Humidity71%

Visibility—

Dew point50°

Sun, 1861° / 52°

61 °

Eureka, Sunday, 18 October

Clear. High 61°, low 52°.

Pressure30.12 inHg

Wind7.7 mph N

Humidity66%

Visibility—

Dew point48°

Mon, 1962° / 54°

62 °

Eureka, Monday, 19 October

Partly cloudy. High 62°, low 54°.

Pressure30.15 inHg

Wind5.1 mph SE

Humidity71%

Visibility—

Dew point51°

Tue, 2060° / 52°

0.02

60 °

Eureka, Tuesday, 20 October

Light rain. High 60°, low 52°.

Pressure30.21 inHg

Wind8.2 mph NW

Humidity81%

Visibility—

Dew point54°

Wed, 2158° / 49°

58 °

Eureka, Wednesday, 21 October

Partly cloudy. High 58°, low 49°.

Pressure30.06 inHg

Wind6.4 mph NW

Humidity64%

Visibility—

Dew point45°

Thu, 2261° / 52°

61 °

Eureka, Thursday, 22 October

Clear. High 61°, low 52°.

Pressure30.12 inHg

Wind4.8 mph NW

Humidity51%

Visibility—

Dew point42°

Fri, 2361° / 53°

61 °

Eureka, Friday, 23 October

Overcast. High 61°, low 53°.

Pressure30.06 inHg

Wind5.8 mph N

Humidity49%

Visibility—

Dew point41°

Sat, 2461° / 53°

61 °

Eureka, Saturday, 24 October

Overcast. High 61°, low 53°.

Pressure29.94 inHg

Wind6.8 mph NW

Humidity58%

Visibility—

Dew point45°

Sun, 2564° / 52°

64 °

Eureka, Sunday, 25 October

Overcast. High 64°, low 52°.

Pressure30.03 inHg

Wind7.6 mph W

Humidity66%

Visibility—

Dew point48°

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

Mon, 2663° / 49°

0.17

63 °

Eureka, Monday, 26 October

Climate normal for this date — 60-year average.

Average high63°

Average low49°

Average precipitation0.17 in

Chance of precipitation38%

Record high84° (2003)

Record low38° (2023)

Tue, 2762° / 48°

0.13

62 °

Eureka, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high62°

Average low48°

Average precipitation0.13 in

Chance of precipitation28%

Record high83° (2003)

Record low38° (2025)

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)

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.