As of 03:45 PDT

Weather in Thornton, WA

45°Current weather

Thornton, Saturday, 17 October, 03:45

Overcast. Feels like 40°. High 66°, low 43°.

Pressure30.00 inHg
Wind8.2 mph S
Humidity50%
Visibility6.2 mi
Dew point28°

Monthly outlook for Thornton, WA: average high 55.2°, average low 38.6°. That is 0.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 20 October (66.2°), the coolest 18 October (31.4°).

55.2°/38.6°
Average high / low
+0.5°
Above normal
3 / 5
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
17 October – 26 October59.6°56.5°+1.7°
27 October – 5 November47.9°50.1°-1.2°
6 November – 15 Novemberat normal46.2°—

October records over 66 years

85.5°2 October 1975All-time high
13.3°25 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Plaza (14 mi).

Sun, 1864° / 31°0Clear
64 °Clear

Thornton, Sunday, 18 October

Clear. High 64°, low 31°.

Pressure30.09 inHg
Wind1.3 mph SW
Humidity35%
Visibility6.2 mi
Dew point27°
Mon, 1959° / 44°0Overcast
59 °Overcast

Thornton, Monday, 19 October

Overcast. High 59°, low 44°.

Pressure29.88 inHg
Wind6.2 mph SW
Humidity48%
Visibility6.2 mi
Dew point37°
Tue, 2066° / 44°0Clear
66 °Clear

Thornton, Tuesday, 20 October

Clear. High 66°, low 44°.

Pressure30.00 inHg
Wind5.7 mph NE
Humidity37%
Visibility6.2 mi
Dew point35°
Wed, 2165° / 43°0Overcast
65 °Overcast

Thornton, Wednesday, 21 October

Overcast. High 65°, low 43°.

Pressure30.00 inHg
Wind5.9 mph SW
Humidity40%
Visibility—
Dew point33°
Thu, 2264° / 43°0Overcast
64 °Overcast

Thornton, Thursday, 22 October

Overcast. High 64°, low 43°.

Pressure29.88 inHg
Wind7.5 mph SW
Humidity44%
Visibility—
Dew point37°
Fri, 2353° / 40°0Overcast
53 °Overcast

Thornton, Friday, 23 October

Overcast. High 53°, low 40°.

Pressure30.00 inHg
Wind20 mph SW
Humidity53%
Visibility—
Dew point29°
Sat, 2454° / 38°0Clear
54 °Clear

Thornton, Saturday, 24 October

Clear. High 54°, low 38°.

Pressure30.33 inHg
Wind10.2 mph E
Humidity51%
Visibility—
Dew point30°
Sun, 2550° / 41°0.01Light rain
50 °Light rain

Thornton, Sunday, 25 October

Light rain. High 50°, low 41°.

Pressure30.12 inHg
Wind14.7 mph SW
Humidity50%
Visibility—
Dew point30°
Mon, 2654° / 37°0.08Light rain
54 °Light rain

Thornton, Monday, 26 October

Light rain. High 54°, low 37°.

Pressure30.03 inHg
Wind13.1 mph SW
Humidity47%
Visibility—
Dew point29°
Tue, 2746° / 38°0.06Light rain
46 °Light rain

Thornton, Tuesday, 27 October

Light rain. High 46°, low 38°.

Pressure29.91 inHg
Wind17.1 mph SW
Humidity78%
Visibility—
Dew point35°
Wed, 2847° / 36°0.24Rain
47 °Rain

Thornton, Wednesday, 28 October

Rain. High 47°, low 36°.

Pressure29.85 inHg
Wind17.4 mph SW
Humidity47%
Visibility—
Dew point26°
Thu, 2947° / 37°0Overcast
47 °Overcast

Thornton, Thursday, 29 October

Overcast. High 47°, low 37°.

Pressure30.00 inHg
Wind16.3 mph SW
Humidity69%
Visibility—
Dew point33°
Fri, 3045° / 33°0.01Light rain
45 °Light rain

Thornton, Friday, 30 October

Light rain. High 45°, low 33°.

Pressure29.94 inHg
Wind18.5 mph SW
Humidity67%
Visibility—
Dew point30°
Sat, 3147° / 33°0Clear
47 °Clear

Thornton, Saturday, 31 October

Clear. High 47°, low 33°.

Pressure30.21 inHg
Wind7.9 mph SE
Humidity66%
Visibility—
Dew point31°
Sun, 0156° / 37°0Partly cloudy
56 °Partly cloudy

Thornton, Sunday, 1 November

Partly cloudy. High 56°, low 37°.

Pressure30.09 inHg
Wind12.8 mph SW
Humidity41%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0250° / 35°0.09Climate normal
50 °Climate normal

Thornton, Monday, 2 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation37%
Record high65° (1981)
Record low20° (1961)
Tue, 0350° / 35°0.04Climate normal
50 °Climate normal

Thornton, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation30%
Record high64° (1965)
Record low22° (1973)
Wed, 0449° / 36°0.12Climate normal
49 °Climate normal

Thornton, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation45%
Record high66° (1975)
Record low22° (2003)
Thu, 0548° / 34°0.08Climate normal
48 °Climate normal

Thornton, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°
Average low34°
Average precipitation0.08 in
Chance of precipitation40%
Record high64° (1975)
Record low17° (1973)
Fri, 0648° / 34°0.1Climate normal
48 °Climate normal

Thornton, Friday, 6 November

Climate normal for this date — 60-year average.

Average high48°
Average low34°
Average precipitation0.1 in
Chance of precipitation48%
Record high64° (1999)
Record low17° (2003)
Sat, 0747° / 34°0.12Climate normal
47 °Climate normal

Thornton, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.12 in
Chance of precipitation42%
Record high67° (1999)
Record low13° (2017)
Sun, 0847° / 33°0.06Climate normal
47 °Climate normal

Thornton, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation30%
Record high65° (2016)
Record low22° (2022)
Mon, 0946° / 33°0.07Climate normal
46 °Climate normal

Thornton, Monday, 9 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation38%
Record high60° (1989)
Record low19° (1986)
Tue, 1046° / 33°0.07Climate normal
46 °Climate normal

Thornton, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation37%
Record high62° (2016)
Record low12° (2022)
Wed, 1146° / 33°0.07Climate normal
46 °Climate normal

Thornton, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation30%
Record high62° (2016)
Record low2° (2000)
Thu, 1246° / 33°0.09Climate normal
46 °Climate normal

Thornton, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.09 in
Chance of precipitation38%
Record high67° (1999)
Record low6° (2000)
Fri, 1345° / 33°0.09Climate normal
45 °Climate normal

Thornton, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.09 in
Chance of precipitation43%
Record high63° (1999)
Record low6° (2000)
Sat, 1445° / 33°0.05Climate normal
45 °Climate normal

Thornton, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation30%
Record high66° (1999)
Record low13° (1985)
Sun, 1546° / 32°0.07Climate normal
46 °Climate normal

Thornton, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.07 in
Chance of precipitation38%
Record high60° (2021)
Record low9° (2000)

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 Thornton, 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 Thornton, 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.