Monthly outlook for Lyman, WA: average high 58.3°, average low 45°. That is 2.6° above the climate normal for October. Precipitation is expected on 7 days (about 3.6 inches), against a normal of 8 days and 4.1 inches. The warmest day looks like 16 October (74.5°), the coolest 12 October (36.7°).
58.3°/45°
Average high / low
+2.6°
Above normal
7 / 8
Wet days / normal
3.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
61.4°
54.6°
+3.8°
19 October – 28 October
53.1°
50.9°
+1.2°
29 October – 7 November
at normal
47.2°
—
October records over 66 years
81.9°16 October 2022All-time high
2.8°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Acme (15 mi).
Sat, 1060° / 48°0.08
60 °
Lyman, Saturday, 10 October
Light rain. High 60°, low 48°.
Pressure29.85 inHg
Wind2.8 mph W
Humidity77%
Visibility6.2 mi
Dew point43°
Sun, 1159° / 38°0
59 °
Lyman, Sunday, 11 October
Clear. High 59°, low 38°.
Pressure30.00 inHg
Wind0.5 mph SW
Humidity45%
Visibility6.2 mi
Dew point35°
Mon, 1258° / 37°0
58 °
Lyman, Monday, 12 October
Clear. High 58°, low 37°.
Pressure30.06 inHg
Wind1.3 mph S
Humidity44%
Visibility6.2 mi
Dew point34°
Tue, 1360° / 38°0
60 °
Lyman, Tuesday, 13 October
Partly cloudy. High 60°, low 38°.
Pressure30.12 inHg
Wind1.5 mph SE
Humidity55%
Visibility1.0 mi
Dew point39°
Wed, 1462° / 44°0
62 °
Lyman, Wednesday, 14 October
Overcast. High 62°, low 44°.
Pressure30.24 inHg
Wind3.9 mph E
Humidity64%
Visibility—
Dew point44°
Thu, 1567° / 45°0
67 °
Lyman, Thursday, 15 October
Overcast. High 67°, low 45°.
Pressure30.24 inHg
Wind6.8 mph E
Humidity67%
Visibility—
Dew point48°
Fri, 1674° / 50°0
74 °
Lyman, Friday, 16 October
Partly cloudy. High 74°, low 50°.
Pressure30.21 inHg
Wind7.4 mph E
Humidity40%
Visibility—
Dew point39°
Sat, 1761° / 50°0
61 °
Lyman, Saturday, 17 October
Light rain. High 61°, low 50°.
Pressure30.18 inHg
Wind4.4 mph W
Humidity68%
Visibility—
Dew point50°
Sun, 1853° / 50°0.13
53 °
Lyman, Sunday, 18 October
Light rain. High 53°, low 50°.
Pressure30.06 inHg
Wind3.2 mph E
Humidity93%
Visibility—
Dew point51°
Mon, 1955° / 48°0.51
55 °
Lyman, Monday, 19 October
Rain. High 55°, low 48°.
Pressure30.00 inHg
Wind5.2 mph S
Humidity81%
Visibility—
Dew point49°
Tue, 2051° / 46°0.81
51 °
Lyman, Tuesday, 20 October
Rain. High 51°, low 46°.
Pressure30.06 inHg
Wind4.3 mph E
Humidity98%
Visibility—
Dew point48°
Wed, 2148° / 44°1.19
48 °
Lyman, Wednesday, 21 October
Heavy rain. High 48°, low 44°.
Pressure29.97 inHg
Wind6.8 mph E
Humidity96%
Visibility—
Dew point44°
Thu, 2248° / 44°0.37
48 °
Lyman, Thursday, 22 October
Rain. High 48°, low 44°.
Pressure30.21 inHg
Wind4.4 mph E
Humidity96%
Visibility—
Dew point46°
Fri, 2355° / 43°0
55 °
Lyman, Friday, 23 October
Light rain. High 55°, low 43°.
Pressure30.45 inHg
Wind4.7 mph E
Humidity80%
Visibility—
Dew point44°
Sat, 2462° / 45°0
62 °
Lyman, Saturday, 24 October
Overcast. High 62°, low 45°.
Pressure30.45 inHg
Wind5.7 mph E
Humidity63%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2550° / 39°0.29
50 °
Lyman, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.29 in
Chance of precipitation63%
Record high65° (1965)
Record low23° (2020)
Mon, 2649° / 38°0.35
49 °
Lyman, Monday, 26 October
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.35 in
Chance of precipitation55%
Record high67° (1965)
Record low20° (1970)
Tue, 2749° / 38°0.29
49 °
Lyman, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.29 in
Chance of precipitation52%
Record high65° (2017)
Record low22° (1970)
Wed, 2849° / 38°0.38
49 °
Lyman, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.38 in
Chance of precipitation65%
Record high67° (2017)
Record low19° (1971)
Thu, 2948° / 36°0.24
48 °
Lyman, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.24 in
Chance of precipitation55%
Record high67° (1962)
Record low18° (1972)
Fri, 3048° / 36°0.33
48 °
Lyman, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.33 in
Chance of precipitation55%
Record high58° (1987)
Record low20° (1972)
Sat, 3147° / 37°0.39
47 °
Lyman, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.39 in
Chance of precipitation65%
Record high58° (1964)
Record low3° (1984)
Sun, 0148° / 36°0.31
48 °
Lyman, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.31 in
Chance of precipitation50%
Record high63° (1969)
Record low24° (1984)
Mon, 0248° / 36°0.31
48 °
Lyman, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.31 in
Chance of precipitation55%
Record high65° (1962)
Record low24° (1961)
Tue, 0347° / 37°0.38
47 °
Lyman, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.38 in
Chance of precipitation63%
Record high62° (2010)
Record low24° (1994)
Wed, 0447° / 37°0.46
47 °
Lyman, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.46 in
Chance of precipitation62%
Record high63° (1980)
Record low23° (2017)
Thu, 0547° / 35°0.29
47 °
Lyman, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.29 in
Chance of precipitation67%
Record high61° (1980)
Record low19° (1971)
Fri, 0646° / 35°0.44
46 °
Lyman, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.44 in
Chance of precipitation65%
Record high55° (2019)
Record low22° (2017)
Sat, 0746° / 36°0.4
46 °
Lyman, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.4 in
Chance of precipitation77%
Record high58° (2019)
Record low20° (2017)
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 Lyman, 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 Lyman, 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.