Monthly outlook for Illahee, WA: average high 59°, average low 46.4°. That is 1.1° above the climate normal for October. Precipitation is expected on 6 days (about 3.6 inches), against a normal of 8 days and 2.7 inches. The warmest day looks like 17 October (68.3°), the coolest 25 October (40.9°).
59°/46.4°
Average high / low
+1.1°
Above normal
6 / 8
Wet days / normal
3.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
62.4°
58°
+2.4°
20 October – 29 October
53.2°
54.4°
-0.7°
30 October – 8 November
at normal
51.5°
—
October records over 66 years
83.5°16 October 2022All-time high
28.4°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Chico (6 mi).
Sun, 1163° / 48°0
63 °
Illahee, Sunday, 11 October
Clear. High 63°, low 48°.
Pressure29.97 inHg
Wind10.9 mph N
Humidity49%
Visibility5.1 mi
Dew point40°
Mon, 1261° / 44°0
61 °
Illahee, Monday, 12 October
Clear. High 61°, low 44°.
Pressure30.06 inHg
Wind2.6 mph S
Humidity55%
Visibility6.2 mi
Dew point41°
Tue, 1361° / 46°0
61 °
Illahee, Tuesday, 13 October
Clear. High 61°, low 46°.
Pressure30.12 inHg
Wind2 mph SE
Humidity63%
Visibility6.2 mi
Dew point45°
Wed, 1463° / 48°0
63 °
Illahee, Wednesday, 14 October
Mostly clear. High 63°, low 48°.
Pressure30.21 inHg
Wind3.2 mph N
Humidity65%
Visibility—
Dew point44°
Thu, 1564° / 49°0
64 °
Illahee, Thursday, 15 October
Mostly clear. High 64°, low 49°.
Pressure30.21 inHg
Wind5.9 mph NE
Humidity74%
Visibility—
Dew point48°
Fri, 1668° / 45°0
68 °
Illahee, Friday, 16 October
Overcast. High 68°, low 45°.
Pressure30.30 inHg
Wind4.7 mph NE
Humidity50%
Visibility—
Dew point38°
Sat, 1768° / 44°0
68 °
Illahee, Saturday, 17 October
Overcast. High 68°, low 44°.
Pressure30.12 inHg
Wind2.7 mph N
Humidity36%
Visibility—
Dew point31°
Sun, 1861° / 45°0.01
61 °
Illahee, Sunday, 18 October
Light rain. High 61°, low 45°.
Pressure30.15 inHg
Wind6.9 mph S
Humidity69%
Visibility—
Dew point46°
Mon, 1962° / 51°0
62 °
Illahee, Monday, 19 October
Overcast. High 62°, low 51°.
Pressure30.03 inHg
Wind9.6 mph S
Humidity71%
Visibility—
Dew point47°
Tue, 2051° / 49°0.2
51 °
Illahee, Tuesday, 20 October
Light rain. High 51°, low 49°.
Pressure29.88 inHg
Wind10.3 mph S
Humidity91%
Visibility—
Dew point48°
Wed, 2156° / 48°0.31
56 °
Illahee, Wednesday, 21 October
Rain. High 56°, low 48°.
Pressure30.00 inHg
Wind11.5 mph S
Humidity84%
Visibility—
Dew point47°
Thu, 2253° / 48°1.54
53 °
Illahee, Thursday, 22 October
Heavy rain. High 53°, low 48°.
Pressure29.97 inHg
Wind9.2 mph S
Humidity93%
Visibility—
Dew point50°
Fri, 2359° / 45°0.04
59 °
Illahee, Friday, 23 October
Light rain. High 59°, low 45°.
Pressure30.18 inHg
Wind7.7 mph E
Humidity84%
Visibility—
Dew point47°
Sat, 2450° / 45°1.38
50 °
Illahee, Saturday, 24 October
Heavy rain. High 50°, low 45°.
Pressure30.00 inHg
Wind10.6 mph S
Humidity96%
Visibility—
Dew point45°
Sun, 2550° / 41°0.12
50 °
Illahee, Sunday, 25 October
Light rain. High 50°, low 41°.
Pressure29.74 inHg
Wind8.6 mph SW
Humidity77%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2653° / 44°0.22
53 °
Illahee, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.22 in
Chance of precipitation55%
Record high67° (1965)
Record low35° (1970)
Tue, 2753° / 44°0.21
53 °
Illahee, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.21 in
Chance of precipitation50%
Record high62° (1962)
Record low31° (1971)
Wed, 2853° / 44°0.22
53 °
Illahee, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.22 in
Chance of precipitation53%
Record high67° (1962)
Record low31° (1971)
Thu, 2952° / 43°0.19
52 °
Illahee, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.19 in
Chance of precipitation57%
Record high67° (1962)
Record low32° (1984)
Fri, 3052° / 44°0.2
52 °
Illahee, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.2 in
Chance of precipitation52%
Record high63° (2015)
Record low32° (1991)
Sat, 3152° / 43°0.28
52 °
Illahee, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.28 in
Chance of precipitation60%
Record high61° (1988)
Record low28° (1984)
Sun, 0152° / 43°0.22
52 °
Illahee, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.22 in
Chance of precipitation58%
Record high64° (1981)
Record low32° (2002)
Mon, 0252° / 43°0.21
52 °
Illahee, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.21 in
Chance of precipitation50%
Record high65° (1962)
Record low31° (1973)
Tue, 0352° / 43°0.22
52 °
Illahee, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.22 in
Chance of precipitation62%
Record high62° (2010)
Record low33° (1973)
Wed, 0452° / 43°0.29
52 °
Illahee, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.29 in
Chance of precipitation68%
Record high64° (1980)
Record low31° (2003)
Thu, 0551° / 42°0.2
51 °
Illahee, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.2 in
Chance of precipitation65%
Record high62° (1997)
Record low26° (1973)
Fri, 0650° / 42°0.28
50 °
Illahee, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.28 in
Chance of precipitation60%
Record high56° (1976)
Record low29° (2003)
Sat, 0751° / 42°0.22
51 °
Illahee, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.22 in
Chance of precipitation57%
Record high59° (1976)
Record low31° (1977)
Sun, 0850° / 42°0.17
50 °
Illahee, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.17 in
Chance of precipitation52%
Record high63° (2016)
Record low31° (1977)
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 Illahee, 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 Illahee, 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.