Monthly outlook for Gilliam, WA: average high 56.5°, average low 43.8°. That is 1.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 7 days and 2.2 inches. The warmest day looks like 7 November (71°), the coolest 24 October (32.5°).
56.5°/43.8°
Average high / low
+1.9°
Above normal
5 / 7
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
54.5°
54.1°
+0.2°
3 November – 12 November
59.9°
50.4°
+5.3°
13 November – 22 November
at normal
46.2°
—
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).
Sun, 2562° / 41°0
62 °
Gilliam, Sunday, 25 October
Overcast. High 62°, low 41°.
Pressure30.00 inHg
Wind5.6 mph NW
Humidity41%
Visibility6.2 mi
Dew point36°
Mon, 2654° / 43°0.06
54 °
Gilliam, Monday, 26 October
Light rain. High 54°, low 43°.
Pressure30.03 inHg
Wind9.6 mph SW
Humidity66%
Visibility6.2 mi
Dew point39°
Tue, 2756° / 47°0.04
56 °
Gilliam, Tuesday, 27 October
Light rain. High 56°, low 47°.
Pressure30.06 inHg
Wind13.2 mph SW
Humidity56%
Visibility6.2 mi
Dew point40°
Wed, 2857° / 44°0.02
57 °
Gilliam, Wednesday, 28 October
Light rain. High 57°, low 44°.
Pressure29.94 inHg
Wind3.7 mph W
Humidity60%
Visibility6.2 mi
Dew point40°
Thu, 2955° / 40°0.02
55 °
Gilliam, Thursday, 29 October
Light rain. High 55°, low 40°.
Pressure29.91 inHg
Wind2.8 mph SE
Humidity73%
Visibility—
Dew point42°
Fri, 3046° / 36°0
46 °
Gilliam, Friday, 30 October
Overcast. High 46°, low 36°.
Pressure29.97 inHg
Wind8.5 mph SW
Humidity69%
Visibility—
Dew point33°
Sat, 3150° / 37°0
50 °
Gilliam, Saturday, 31 October
Clear. High 50°, low 37°.
Pressure30.06 inHg
Wind10 mph W
Humidity45%
Visibility—
Dew point25°
Sun, 0157° / 42°0
57 °
Gilliam, Sunday, 1 November
Mostly clear. High 57°, low 42°.
Pressure30.27 inHg
Wind6.9 mph SE
Humidity21%
Visibility—
Dew point13°
Mon, 0249° / 43°0
49 °
Gilliam, Monday, 2 November
Overcast. High 49°, low 43°.
Pressure30.06 inHg
Wind5.2 mph SE
Humidity33%
Visibility—
Dew point19°
Tue, 0352° / 43°0.13
52 °
Gilliam, Tuesday, 3 November
Light rain. High 52°, low 43°.
Pressure29.85 inHg
Wind5.7 mph SE
Humidity64%
Visibility—
Dew point39°
Wed, 0456° / 47°0.23
56 °
Gilliam, Wednesday, 4 November
Rain. High 56°, low 47°.
Pressure29.91 inHg
Wind8.2 mph S
Humidity53%
Visibility—
Dew point38°
Thu, 0554° / 50°0.61
54 °
Gilliam, Thursday, 5 November
Rain. High 54°, low 50°.
Pressure29.85 inHg
Wind9.3 mph S
Humidity79%
Visibility—
Dew point46°
Fri, 0660° / 54°0.04
60 °
Gilliam, Friday, 6 November
Light rain. High 60°, low 54°.
Pressure30.03 inHg
Wind10 mph SE
Humidity76%
Visibility—
Dew point49°
Sat, 0771° / 55°0
71 °
Gilliam, Saturday, 7 November
Overcast. High 71°, low 55°.
Pressure29.80 inHg
Wind10.8 mph SE
Humidity47%
Visibility—
Dew point44°
Sun, 0866° / 47°0.03
66 °
Gilliam, Sunday, 8 November
Light rain. High 66°, low 47°.
Pressure29.91 inHg
Wind27 mph SW
Humidity50%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 2244° / 31°0.16
44 °
Gilliam, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.16 in
Chance of precipitation53%
Record high66° (2017)
Record low-2° (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.