Monthly outlook for Irwin, WA: average high 61.5°, average low 41.3°. That is 2.9° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 16 October (71.3°), the coolest 23 October (36°).
61.5°/41.3°
Average high / low
+2.9°
Above normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
62.3°
58.2°
+2.3°
24 October – 2 November
60.3°
51.6°
+4.8°
3 November – 12 November
at normal
46.8°
—
October records over 66 years
85.8°1 October 1992All-time high
1.9°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Spokane Valley (2 mi).
Thu, 1569° / 39°0
69 °
Irwin, Thursday, 15 October
Clear. High 69°, low 39°.
Pressure30.53 inHg
Wind1.5 mph NE
Humidity47%
Visibility6.2 mi
Dew point40°
Fri, 1671° / 38°0
71 °
Irwin, Friday, 16 October
Overcast. High 71°, low 38°.
Pressure30.33 inHg
Wind1.7 mph NE
Humidity41%
Visibility6.2 mi
Dew point39°
Sat, 1766° / 43°0
66 °
Irwin, Saturday, 17 October
Overcast. High 66°, low 43°.
Pressure30.09 inHg
Wind9.9 mph SW
Humidity38%
Visibility6.2 mi
Dew point38°
Sun, 1863° / 37°0
63 °
Irwin, Sunday, 18 October
Mostly clear. High 63°, low 37°.
Pressure30.12 inHg
Wind1.5 mph N
Humidity39%
Visibility6.2 mi
Dew point32°
Mon, 1968° / 41°0
68 °
Irwin, Monday, 19 October
Overcast. High 68°, low 41°.
Pressure29.94 inHg
Wind2.2 mph SE
Humidity47%
Visibility—
Dew point35°
Tue, 2057° / 43°0
57 °
Irwin, Tuesday, 20 October
Mostly clear. High 57°, low 43°.
Pressure30.06 inHg
Wind3.8 mph W
Humidity52%
Visibility—
Dew point34°
Wed, 2158° / 40°0
58 °
Irwin, Wednesday, 21 October
Clear. High 58°, low 40°.
Pressure30.12 inHg
Wind3.4 mph E
Humidity48%
Visibility—
Dew point31°
Thu, 2255° / 42°0.01
55 °
Irwin, Thursday, 22 October
Light rain. High 55°, low 42°.
Pressure29.97 inHg
Wind7.2 mph SW
Humidity44%
Visibility—
Dew point28°
Fri, 2352° / 36°0
52 °
Irwin, Friday, 23 October
Mostly clear. High 52°, low 36°.
Pressure30.39 inHg
Wind3.3 mph W
Humidity54%
Visibility—
Dew point29°
Sat, 2454° / 38°0
54 °
Irwin, Saturday, 24 October
Overcast. High 54°, low 38°.
Pressure30.47 inHg
Wind3 mph E
Humidity35%
Visibility—
Dew point21°
Sun, 2558° / 39°0
58 °
Irwin, Sunday, 25 October
Overcast. High 58°, low 39°.
Pressure30.45 inHg
Wind3.1 mph E
Humidity32%
Visibility—
Dew point20°
Mon, 2657° / 42°0
57 °
Irwin, Monday, 26 October
Overcast. High 57°, low 42°.
Pressure30.24 inHg
Wind3.2 mph E
Humidity31%
Visibility—
Dew point21°
Tue, 2761° / 44°0
61 °
Irwin, Tuesday, 27 October
Overcast. High 61°, low 44°.
Pressure30.06 inHg
Wind4.8 mph S
Humidity36%
Visibility—
Dew point26°
Wed, 2863° / 48°0
63 °
Irwin, Wednesday, 28 October
Overcast. High 63°, low 48°.
Pressure29.88 inHg
Wind6.2 mph SW
Humidity55%
Visibility—
Dew point40°
Thu, 2969° / 54°0.01
69 °
Irwin, Thursday, 29 October
Light rain. High 69°, low 54°.
Pressure29.80 inHg
Wind10.7 mph SW
Humidity49%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3050° / 35°0.07
50 °
Irwin, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.07 in
Chance of precipitation28%
Record high67° (2008)
Record low15° (2019)
Sat, 3150° / 35°0.09
50 °
Irwin, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation32%
Record high68° (1988)
Record low17° (1984)
Sun, 0149° / 34°0.1
49 °
Irwin, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.1 in
Chance of precipitation38%
Record high67° (1965)
Record low20° (2002)
Mon, 0249° / 35°0.1
49 °
Irwin, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.1 in
Chance of precipitation38%
Record high64° (1981)
Record low21° (2002)
Tue, 0349° / 35°0.06
49 °
Irwin, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.06 in
Chance of precipitation30%
Record high63° (1975)
Record low22° (2002)
Wed, 0449° / 35°0.14
49 °
Irwin, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.14 in
Chance of precipitation45%
Record high67° (1975)
Record low22° (2017)
Thu, 0548° / 34°0.08
48 °
Irwin, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.08 in
Chance of precipitation40%
Record high65° (1975)
Record low19° (2003)
Fri, 0647° / 34°0.1
47 °
Irwin, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.1 in
Chance of precipitation52%
Record high62° (2012)
Record low16° (1994)
Sat, 0747° / 33°0.13
47 °
Irwin, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.13 in
Chance of precipitation45%
Record high62° (1999)
Record low14° (2017)
Sun, 0846° / 33°0.07
46 °
Irwin, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation30%
Record high63° (2016)
Record low17° (2022)
Mon, 0946° / 32°0.09
46 °
Irwin, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.09 in
Chance of precipitation43%
Record high60° (2016)
Record low12° (2022)
Tue, 1045° / 32°0.09
45 °
Irwin, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.09 in
Chance of precipitation45%
Record high59° (2016)
Record low14° (2022)
Wed, 1146° / 31°0.09
46 °
Irwin, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.09 in
Chance of precipitation35%
Record high61° (1990)
Record low10° (2000)
Thu, 1245° / 32°0.11
45 °
Irwin, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation47%
Record high66° (1999)
Record low9° (1985)
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 Irwin, 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 Irwin, 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.