Monthly outlook for Impach, WA: average high 58.6°, average low 38.9°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 8 October (76°), the coolest 16 October (32.8°).
58.6°/38.9°
Average high / low
+0.7°
Above normal
1 / 4
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
58.2°
58.7°
-0.3°
17 October – 26 October
59.3°
53.4°
+3.3°
27 October – 5 November
at normal
46.1°
—
October records over 66 years
86.2°1 October 1992All-time high
-0.4°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Inchelium (3 mi).
Thu, 0876° / 44°0
76 °
Impach, Thursday, 8 October
Overcast. High 76°, low 44°.
Pressure30.00 inHg
Wind3.1 mph SE
Humidity46%
Visibility6.2 mi
Dew point45°
Fri, 0966° / 45°0
66 °
Impach, Friday, 9 October
Light rain. High 66°, low 45°.
Pressure29.56 inHg
Wind8.2 mph S
Humidity62%
Visibility6.2 mi
Dew point45°
Sat, 1050° / 39°0.03
50 °
Impach, Saturday, 10 October
Light rain. High 50°, low 39°.
Pressure29.83 inHg
Wind6.8 mph NE
Humidity62%
Visibility6.2 mi
Dew point36°
Sun, 1151° / 38°0
51 °
Impach, Sunday, 11 October
Clear. High 51°, low 38°.
Pressure30.12 inHg
Wind8.5 mph NE
Humidity52%
Visibility6.2 mi
Dew point23°
Mon, 1255° / 36°0
55 °
Impach, Monday, 12 October
Clear. High 55°, low 36°.
Pressure30.15 inHg
Wind3.9 mph SE
Humidity55%
Visibility—
Dew point31°
Tue, 1351° / 40°0.24
51 °
Impach, Tuesday, 13 October
Rain. High 51°, low 40°.
Pressure30.09 inHg
Wind2.7 mph NE
Humidity52%
Visibility—
Dew point32°
Wed, 1452° / 36°0.02
52 °
Impach, Wednesday, 14 October
Light rain. High 52°, low 36°.
Pressure29.85 inHg
Wind8.1 mph NW
Humidity58%
Visibility—
Dew point34°
Thu, 1553° / 34°0
53 °
Impach, Thursday, 15 October
Partly cloudy. High 53°, low 34°.
Pressure30.39 inHg
Wind3.7 mph NE
Humidity53%
Visibility—
Dew point29°
Fri, 1656° / 33°0
56 °
Impach, Friday, 16 October
Mostly clear. High 56°, low 33°.
Pressure30.47 inHg
Wind3.4 mph N
Humidity55%
Visibility—
Dew point30°
Sat, 1759° / 36°0
59 °
Impach, Saturday, 17 October
Mostly clear. High 59°, low 36°.
Pressure30.30 inHg
Wind3.5 mph N
Humidity48%
Visibility—
Dew point31°
Sun, 1860° / 39°0
60 °
Impach, Sunday, 18 October
Overcast. High 60°, low 39°.
Pressure30.12 inHg
Wind3.8 mph N
Humidity46%
Visibility—
Dew point31°
Mon, 1963° / 40°0
63 °
Impach, Monday, 19 October
Partly cloudy. High 63°, low 40°.
Pressure30.24 inHg
Wind4 mph N
Humidity56%
Visibility—
Dew point37°
Tue, 2059° / 42°0
59 °
Impach, Tuesday, 20 October
Overcast. High 59°, low 42°.
Pressure30.15 inHg
Wind4 mph SW
Humidity56%
Visibility—
Dew point37°
Wed, 2160° / 42°0.01
60 °
Impach, Wednesday, 21 October
Light rain. High 60°, low 42°.
Pressure29.80 inHg
Wind17.9 mph W
Humidity29%
Visibility—
Dew point24°
Thu, 2256° / 37°0
56 °
Impach, Thursday, 22 October
Clear. High 56°, low 37°.
Pressure30.03 inHg
Wind9 mph NW
Humidity28%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2353° / 37°0.07
53 °
Impach, Friday, 23 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.07 in
Chance of precipitation28%
Record high66° (2018)
Record low28° (1967)
Sat, 2452° / 36°0.06
52 °
Impach, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high64° (1992)
Record low24° (2020)
Sun, 2551° / 35°0.07
51 °
Impach, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.07 in
Chance of precipitation37%
Record high64° (1965)
Record low13° (2020)
Mon, 2649° / 35°0.07
49 °
Impach, Monday, 26 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation35%
Record high65° (1965)
Record low21° (1991)
Tue, 2749° / 35°0.07
49 °
Impach, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high63° (1965)
Record low24° (2020)
Wed, 2847° / 34°0.09
47 °
Impach, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.09 in
Chance of precipitation38%
Record high60° (1983)
Record low13° (1991)
Thu, 2947° / 33°0.07
47 °
Impach, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.07 in
Chance of precipitation33%
Record high63° (1987)
Record low15° (1991)
Fri, 3046° / 33°0.06
46 °
Impach, Friday, 30 October
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high61° (1987)
Record low11° (1972)
Sat, 3146° / 33°0.08
46 °
Impach, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.08 in
Chance of precipitation35%
Record high60° (1988)
Record low0° (1984)
Sun, 0146° / 33°0.09
46 °
Impach, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.09 in
Chance of precipitation38%
Record high59° (1988)
Record low16° (1984)
Mon, 0245° / 32°0.07
45 °
Impach, Monday, 2 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation25%
Record high59° (2018)
Record low19° (1961)
Tue, 0345° / 32°0.05
45 °
Impach, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.05 in
Chance of precipitation27%
Record high58° (1975)
Record low20° (2002)
Wed, 0445° / 33°0.11
45 °
Impach, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.11 in
Chance of precipitation42%
Record high61° (1975)
Record low19° (2002)
Thu, 0544° / 32°0.06
44 °
Impach, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.06 in
Chance of precipitation33%
Record high57° (1975)
Record low18° (1961)
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 Impach, 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 Impach, 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.