Monthly outlook for Illahee, WA: average high 60.8°, average low 45.1°. That is 1.9° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 8 days and 2.6 inches. The warmest day looks like 18 October (65.6°), the coolest 21 October (40.2°).
60.8°/45.1°
Average high / low
+1.9°
Above normal
1 / 8
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
61.2°
58.3°
+1.6°
19 October – 28 October
60.1°
54.9°
+2.9°
29 October – 7 November
at normal
51.7°
—
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).
Sat, 1061° / 46°0
61 °
Illahee, Saturday, 10 October
Overcast. High 61°, low 46°.
Pressure29.85 inHg
Wind4.6 mph NE
Humidity77%
Visibility6.2 mi
Dew point46°
Sun, 1159° / 48°0
59 °
Illahee, Sunday, 11 October
Clear. High 59°, low 48°.
Pressure29.97 inHg
Wind11.6 mph N
Humidity45%
Visibility6.2 mi
Dew point38°
Mon, 1260° / 44°0
60 °
Illahee, Monday, 12 October
Clear. High 60°, low 44°.
Pressure30.06 inHg
Wind3 mph S
Humidity56%
Visibility6.2 mi
Dew point41°
Tue, 1359° / 45°0
59 °
Illahee, Tuesday, 13 October
Overcast. High 59°, low 45°.
Pressure30.12 inHg
Wind15.2 mph SW
Humidity82%
Visibility—
Dew point45°
Wed, 1458° / 50°0.01
58 °
Illahee, Wednesday, 14 October
Light rain. High 58°, low 50°.
Pressure30.30 inHg
Wind12 mph SW
Humidity90%
Visibility—
Dew point52°
Thu, 1564° / 46°0
64 °
Illahee, Thursday, 15 October
Overcast. High 64°, low 46°.
Pressure30.33 inHg
Wind6.6 mph NE
Humidity66%
Visibility—
Dew point45°
Fri, 1662° / 46°0
62 °
Illahee, Friday, 16 October
Overcast. High 62°, low 46°.
Pressure30.30 inHg
Wind4.5 mph S
Humidity52%
Visibility—
Dew point38°
Sat, 1764° / 45°0
64 °
Illahee, Saturday, 17 October
Overcast. High 64°, low 45°.
Pressure30.24 inHg
Wind4 mph NE
Humidity66%
Visibility—
Dew point45°
Sun, 1866° / 46°0
66 °
Illahee, Sunday, 18 October
Overcast. High 66°, low 46°.
Pressure30.18 inHg
Wind3.8 mph NE
Humidity69%
Visibility—
Dew point46°
Mon, 1957° / 47°0.01
57 °
Illahee, Monday, 19 October
Light rain. High 57°, low 47°.
Pressure30.06 inHg
Wind6 mph N
Humidity74%
Visibility—
Dew point45°
Tue, 2057° / 44°0.01
57 °
Illahee, Tuesday, 20 October
Light rain. High 57°, low 44°.
Pressure30.21 inHg
Wind2.1 mph E
Humidity66%
Visibility—
Dew point42°
Wed, 2161° / 40°0
61 °
Illahee, Wednesday, 21 October
Clear. High 61°, low 40°.
Pressure30.30 inHg
Wind4.8 mph N
Humidity65%
Visibility—
Dew point41°
Thu, 2261° / 43°0
61 °
Illahee, Thursday, 22 October
Clear. High 61°, low 43°.
Pressure30.03 inHg
Wind6.5 mph NE
Humidity60%
Visibility—
Dew point40°
Fri, 2364° / 41°0
64 °
Illahee, Friday, 23 October
Clear. High 64°, low 41°.
Pressure29.97 inHg
Wind4 mph N
Humidity48%
Visibility—
Dew point35°
Sat, 2460° / 42°0
60 °
Illahee, Saturday, 24 October
Overcast. High 60°, low 42°.
Pressure30.00 inHg
Wind7 mph N
Humidity60%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2554° / 45°0.2
54 °
Illahee, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.2 in
Chance of precipitation58%
Record high67° (1965)
Record low35° (1991)
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)
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.