As of 16:52 PDT

Weather in Issaquah, WA

66°

Issaquah, Wednesday, 7 October, 16:52

Clear. Feels like 66°. High 67°, low 52°.

Pressure30.09 inHg

Wind6 mph NE

Humidity73%

Visibility6.2 mi

Dew point58°

See detailed hourly forecast

Monthly outlook for Issaquah, WA: average high 61.4°, average low 46.2°. That is 1.4° above the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 7 days and 2.6 inches. The warmest day looks like 8 October (74.7°), the coolest 12 October (39.7°).

61.4°/46.2°

Average high / low

+1.4°

Above normal

5 / 7

Wet days / normal

1.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	60.4°	59.7°	+0.4°
17 October – 26 October	63.1°	56.5°	+3.6°
27 October – 5 November	at normal	52.9°	—

October records over 66 years

86.7°16 October 2022All-time high

22.8°28 October 1971All-time low

Climate normals and records are computed from the nearest reference point — Bellevue (6 mi).

Thu, 0875° / 52°

75 °

Issaquah, Thursday, 8 October

Overcast. High 75°, low 52°.

Pressure30.06 inHg

Wind2.2 mph NW

Humidity74%

Visibility6.2 mi

Dew point54°

Fri, 0958° / 49°

0.36

58 °

Issaquah, Friday, 9 October

Rain. High 58°, low 49°.

Pressure29.80 inHg

Wind5.2 mph E

Humidity90%

Visibility5.8 mi

Dew point52°

Sat, 1056° / 45°

0.2

56 °

Issaquah, Saturday, 10 October

Rain. High 56°, low 45°.

Pressure29.85 inHg

Wind2.1 mph N

Humidity78%

Visibility6.2 mi

Dew point47°

Sun, 1159° / 40°

59 °

Issaquah, Sunday, 11 October

Clear. High 59°, low 40°.

Pressure30.06 inHg

Wind2.9 mph NW

Humidity64%

Visibility6.2 mi

Dew point43°

Mon, 1259° / 40°

59 °

Issaquah, Monday, 12 October

Clear. High 59°, low 40°.

Pressure30.12 inHg

Wind3.1 mph NW

Humidity67%

Visibility—

Dew point40°

Tue, 1352° / 44°

0.6

52 °

Issaquah, Tuesday, 13 October

Rain. High 52°, low 44°.

Pressure29.85 inHg

Wind9.8 mph S

Humidity100%

Visibility—

Dew point47°

Wed, 1455° / 44°

0.09

55 °

Issaquah, Wednesday, 14 October

Light rain. High 55°, low 44°.

Pressure30.09 inHg

Wind7.3 mph S

Humidity75%

Visibility—

Dew point45°

Thu, 1560° / 41°

60 °

Issaquah, Thursday, 15 October

Clear. High 60°, low 41°.

Pressure30.42 inHg

Wind5.5 mph N

Humidity60%

Visibility—

Dew point38°

Fri, 1663° / 42°

63 °

Issaquah, Friday, 16 October

Clear. High 63°, low 42°.

Pressure30.39 inHg

Wind6.8 mph N

Humidity46%

Visibility—

Dew point33°

Sat, 1764° / 43°

64 °

Issaquah, Saturday, 17 October

Clear. High 64°, low 43°.

Pressure30.06 inHg

Wind2.7 mph SE

Humidity37%

Visibility—

Dew point29°

Sun, 1860° / 44°

60 °

Issaquah, Sunday, 18 October

Clear. High 60°, low 44°.

Pressure30.03 inHg

Wind6.1 mph SW

Humidity48%

Visibility—

Dew point35°

Mon, 1960° / 50°

0.07

60 °

Issaquah, Monday, 19 October

Light rain. High 60°, low 50°.

Pressure30.15 inHg

Wind4.3 mph S

Humidity53%

Visibility—

Dew point41°

Tue, 2065° / 55°

65 °

Issaquah, Tuesday, 20 October

Light rain. High 65°, low 55°.

Pressure30.39 inHg

Wind3.2 mph E

Humidity81%

Visibility—

Dew point52°

Wed, 2167° / 51°

67 °

Issaquah, Wednesday, 21 October

Overcast. High 67°, low 51°.

Pressure30.42 inHg

Wind6.9 mph N

Humidity60%

Visibility—

Dew point48°

Thu, 2263° / 48°

63 °

Issaquah, Thursday, 22 October

Overcast. High 63°, low 48°.

Pressure30.39 inHg

Wind5.2 mph N

Humidity74%

Visibility—

Dew point46°

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

Fri, 2357° / 44°

0.15

57 °

Issaquah, Friday, 23 October

Climate normal for this date — 60-year average.

Average high57°

Average low44°

Average precipitation0.15 in

Chance of precipitation53%

Record high71° (1965)

Record low37° (1984)

Sat, 2456° / 43°

0.21

56 °

Issaquah, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high56°

Average low43°

Average precipitation0.21 in

Chance of precipitation53%

Record high70° (1965)

Record low35° (1983)

Sun, 2555° / 43°

0.22

55 °

Issaquah, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high55°

Average low43°

Average precipitation0.22 in

Chance of precipitation55%

Record high68° (1965)

Record low34° (2020)

Mon, 2654° / 43°

0.26

54 °

Issaquah, Monday, 26 October

Climate normal for this date — 60-year average.

Average high54°

Average low43°

Average precipitation0.26 in

Chance of precipitation53%

Record high68° (1965)

Record low30° (1970)

Tue, 2754° / 42°

0.21

54 °

Issaquah, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°

Average low42°

Average precipitation0.21 in

Chance of precipitation47%

Record high65° (1962)

Record low29° (1971)

Wed, 2854° / 42°

0.26

54 °

Issaquah, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high54°

Average low42°

Average precipitation0.26 in

Chance of precipitation58%

Record high68° (1962)

Record low23° (1971)

Thu, 2953° / 41°

0.19

53 °

Issaquah, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.19 in

Chance of precipitation53%

Record high69° (1962)

Record low26° (1991)

Fri, 3053° / 41°

0.21

53 °

Issaquah, Friday, 30 October

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.21 in

Chance of precipitation55%

Record high62° (1987)

Record low27° (1991)

Sat, 3152° / 41°

0.27

52 °

Issaquah, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°

Average low41°

Average precipitation0.27 in

Chance of precipitation65%

Record high64° (1964)

Record low26° (1984)

Sun, 0153° / 41°

0.24

53 °

Issaquah, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.24 in

Chance of precipitation53%

Record high65° (1969)

Record low28° (1995)

Mon, 0253° / 41°

0.2

53 °

Issaquah, Monday, 2 November

Climate normal for this date — 60-year average.

Average high53°

Average low41°

Average precipitation0.2 in

Chance of precipitation58%

Record high67° (1962)

Record low28° (1973)

Tue, 0353° / 42°

0.27

53 °

Issaquah, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.27 in

Chance of precipitation62%

Record high65° (2010)

Record low28° (2003)

Wed, 0453° / 42°

0.33

53 °

Issaquah, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.33 in

Chance of precipitation58%

Record high66° (1980)

Record low28° (2003)

Thu, 0552° / 41°

0.19

52 °

Issaquah, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°

Average low41°

Average precipitation0.19 in

Chance of precipitation58%

Record high64° (1997)

Record low25° (1971)

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 Issaquah, WA 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 Issaquah, WA 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.