Monthly outlook for Gilliam, WA: average high 58.9°, average low 44.9°. That is 3° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 7 days and 2.2 inches. The warmest day looks like 4 November (66.7°), the coolest 1 November (37.9°).
58.9°/44.9°
Average high / low
+3°
Above normal
3 / 7
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
56.3°
54.7°
+0.9°
2 November – 11 November
63.3°
50.7°
+7°
12 November – 21 November
at normal
46.7°
—
October records over 66 years
88.3°2 October 1975All-time high
10.6°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Kooskooskie (9 mi).
Sat, 2460° / 38°0
60 °
Gilliam, Saturday, 24 October
Partly cloudy. High 60°, low 38°.
Pressure30.18 inHg
Wind3.9 mph NW
Humidity40%
Visibility6.2 mi
Dew point32°
Sun, 2566° / 46°0
66 °
Gilliam, Sunday, 25 October
Overcast. High 66°, low 46°.
Pressure29.97 inHg
Wind5.4 mph NW
Humidity42%
Visibility6.2 mi
Dew point39°
Mon, 2656° / 45°0
56 °
Gilliam, Monday, 26 October
Overcast. High 56°, low 45°.
Pressure30.03 inHg
Wind9.1 mph SW
Humidity56%
Visibility6.2 mi
Dew point38°
Tue, 2759° / 46°0
59 °
Gilliam, Tuesday, 27 October
Partly cloudy. High 59°, low 46°.
Pressure30.12 inHg
Wind9 mph SW
Humidity51%
Visibility6.2 mi
Dew point39°
Wed, 2856° / 46°0.1
56 °
Gilliam, Wednesday, 28 October
Light rain. High 56°, low 46°.
Pressure29.94 inHg
Wind11.9 mph S
Humidity88%
Visibility—
Dew point46°
Thu, 2955° / 44°0.01
55 °
Gilliam, Thursday, 29 October
Light rain. High 55°, low 44°.
Pressure30.03 inHg
Wind12.3 mph SW
Humidity58%
Visibility—
Dew point37°
Fri, 3051° / 41°0
51 °
Gilliam, Friday, 30 October
Overcast. High 51°, low 41°.
Pressure29.97 inHg
Wind5.5 mph W
Humidity50%
Visibility—
Dew point29°
Sat, 3150° / 39°0
50 °
Gilliam, Saturday, 31 October
Overcast. High 50°, low 39°.
Pressure30.03 inHg
Wind5.3 mph NW
Humidity55%
Visibility—
Dew point30°
Sun, 0154° / 38°0
54 °
Gilliam, Sunday, 1 November
Clear. High 54°, low 38°.
Pressure30.21 inHg
Wind7.1 mph SE
Humidity38%
Visibility—
Dew point24°
Mon, 0256° / 42°0
56 °
Gilliam, Monday, 2 November
Clear. High 56°, low 42°.
Pressure30.50 inHg
Wind5.8 mph SE
Humidity29%
Visibility—
Dew point21°
Tue, 0360° / 44°0
60 °
Gilliam, Tuesday, 3 November
Overcast. High 60°, low 44°.
Pressure30.47 inHg
Wind5.5 mph NW
Humidity31%
Visibility—
Dew point24°
Wed, 0467° / 49°0
67 °
Gilliam, Wednesday, 4 November
Clear. High 67°, low 49°.
Pressure30.18 inHg
Wind5 mph SE
Humidity20%
Visibility—
Dew point19°
Thu, 0566° / 50°0
66 °
Gilliam, Thursday, 5 November
Clear. High 66°, low 50°.
Pressure29.88 inHg
Wind6 mph SE
Humidity20%
Visibility—
Dew point20°
Fri, 0666° / 55°0.01
66 °
Gilliam, Friday, 6 November
Light rain. High 66°, low 55°.
Pressure29.88 inHg
Wind19.7 mph S
Humidity29%
Visibility—
Dew point32°
Sat, 0765° / 53°0.04
65 °
Gilliam, Saturday, 7 November
Light rain. High 65°, low 53°.
Pressure29.94 inHg
Wind13.8 mph S
Humidity47%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0849° / 36°0.13
49 °
Gilliam, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.13 in
Chance of precipitation47%
Record high66° (2016)
Record low22° (1994)
Mon, 0949° / 36°0.11
49 °
Gilliam, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation52%
Record high64° (2016)
Record low19° (1986)
Tue, 1049° / 36°0.1
49 °
Gilliam, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation45%
Record high64° (1989)
Record low3° (1986)
Wed, 1149° / 35°0.13
49 °
Gilliam, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.13 in
Chance of precipitation43%
Record high67° (1990)
Record low3° (2000)
Thu, 1249° / 36°0.17
49 °
Gilliam, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.17 in
Chance of precipitation42%
Record high72° (1999)
Record low4° (1985)
Fri, 1348° / 35°0.15
48 °
Gilliam, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.15 in
Chance of precipitation57%
Record high70° (1999)
Record low5° (1985)
Sat, 1448° / 35°0.09
48 °
Gilliam, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation43%
Record high67° (1999)
Record low9° (1985)
Sun, 1549° / 35°0.1
49 °
Gilliam, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.1 in
Chance of precipitation45%
Record high65° (2021)
Record low13° (1964)
Mon, 1647° / 35°0.15
47 °
Gilliam, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.15 in
Chance of precipitation58%
Record high62° (1999)
Record low10° (1964)
Tue, 1747° / 35°0.17
47 °
Gilliam, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.17 in
Chance of precipitation58%
Record high64° (1976)
Record low6° (2000)
Wed, 1846° / 34°0.15
46 °
Gilliam, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.15 in
Chance of precipitation52%
Record high60° (2008)
Record low13° (2000)
Thu, 1946° / 33°0.14
46 °
Gilliam, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.14 in
Chance of precipitation43%
Record high60° (1989)
Record low8° (1985)
Fri, 2045° / 33°0.15
45 °
Gilliam, Friday, 20 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.15 in
Chance of precipitation53%
Record high62° (2002)
Record low14° (1985)
Sat, 2144° / 31°0.13
44 °
Gilliam, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.13 in
Chance of precipitation53%
Record high58° (2002)
Record low3° (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 Gilliam, 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 Gilliam, 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.