Monthly outlook for Thornton, ID: average high 60.9°, average low 41°. That is 2.3° above the climate normal for October. Precipitation is expected on 1 day (about 1.5 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 22 October (71.5°), the coolest 15 October (34.9°).
60.9°/41°
Average high / low
+2.3°
Above normal
1 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
60.1°
58.2°
+1.1°
21 October – 30 October
62.2°
52.9°
+5.2°
31 October – 9 November
at normal
47.2°
—
October records over 66 years
83.8°2 October 2010All-time high
3.6°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Ririe (9 mi).
Mon, 1257° / 42°0.03
57 °
Thornton, Monday, 12 October
Light rain. High 57°, low 42°.
Pressure29.80 inHg
Wind1.5 mph W
Humidity64%
Visibility6.2 mi
Dew point42°
Tue, 1357° / 42°0.02
57 °
Thornton, Tuesday, 13 October
Light rain. High 57°, low 42°.
Pressure29.88 inHg
Wind2.3 mph NW
Humidity66%
Visibility6.2 mi
Dew point41°
Wed, 1455° / 37°0
55 °
Thornton, Wednesday, 14 October
Clear. High 55°, low 37°.
Pressure30.12 inHg
Wind2.4 mph SW
Humidity68%
Visibility6.2 mi
Dew point40°
Thu, 1563° / 35°0
63 °
Thornton, Thursday, 15 October
Clear. High 63°, low 35°.
Pressure30.39 inHg
Wind13.4 mph NE
Humidity46%
Visibility—
Dew point32°
Fri, 1662° / 37°0
62 °
Thornton, Friday, 16 October
Clear. High 62°, low 37°.
Pressure30.45 inHg
Wind6.7 mph NE
Humidity47%
Visibility—
Dew point33°
Sat, 1764° / 42°0
64 °
Thornton, Saturday, 17 October
Clear. High 64°, low 42°.
Pressure30.27 inHg
Wind8.7 mph SW
Humidity34%
Visibility—
Dew point29°
Sun, 1865° / 44°0
65 °
Thornton, Sunday, 18 October
Overcast. High 65°, low 44°.
Pressure30.12 inHg
Wind7.5 mph SW
Humidity38%
Visibility—
Dew point32°
Mon, 1967° / 46°0
67 °
Thornton, Monday, 19 October
Partly cloudy. High 67°, low 46°.
Pressure29.97 inHg
Wind15.8 mph SW
Humidity37%
Visibility—
Dew point33°
Tue, 2057° / 43°0
57 °
Thornton, Tuesday, 20 October
Overcast. High 57°, low 43°.
Pressure30.03 inHg
Wind15.1 mph SW
Humidity39%
Visibility—
Dew point26°
Wed, 2157° / 37°0
57 °
Thornton, Wednesday, 21 October
Clear. High 57°, low 37°.
Pressure30.15 inHg
Wind9.3 mph S
Humidity33%
Visibility—
Dew point21°
Thu, 2271° / 42°0
71 °
Thornton, Thursday, 22 October
Overcast. High 71°, low 42°.
Pressure29.91 inHg
Wind22 mph SW
Humidity30%
Visibility—
Dew point28°
Fri, 2356° / 43°0
56 °
Thornton, Friday, 23 October
Light rain. High 56°, low 43°.
Pressure30.24 inHg
Wind16.1 mph SW
Humidity47%
Visibility—
Dew point31°
Sat, 2459° / 38°0
59 °
Thornton, Saturday, 24 October
Partly cloudy. High 59°, low 38°.
Pressure30.27 inHg
Wind5.4 mph N
Humidity38%
Visibility—
Dew point27°
Sun, 2564° / 39°0
64 °
Thornton, Sunday, 25 October
Clear. High 64°, low 39°.
Pressure30.30 inHg
Wind4.8 mph N
Humidity30%
Visibility—
Dew point24°
Mon, 2664° / 42°0
64 °
Thornton, Monday, 26 October
Mostly clear. High 64°, low 42°.
Pressure30.15 inHg
Wind4.8 mph W
Humidity26%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2752° / 32°0.03
52 °
Thornton, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low32°
Average precipitation0.03 in
Chance of precipitation18%
Record high70° (1977)
Record low8° (1996)
Wed, 2851° / 32°0.07
51 °
Thornton, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.07 in
Chance of precipitation30%
Record high68° (1990)
Record low9° (1996)
Thu, 2950° / 31°0.06
50 °
Thornton, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.06 in
Chance of precipitation30%
Record high70° (1964)
Record low10° (2019)
Fri, 3048° / 30°0.06
48 °
Thornton, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.06 in
Chance of precipitation30%
Record high69° (1962)
Record low4° (2019)
Sat, 3149° / 31°0.05
49 °
Thornton, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.05 in
Chance of precipitation28%
Record high68° (2008)
Record low12° (1961)
Sun, 0148° / 30°0.03
48 °
Thornton, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation22%
Record high67° (1988)
Record low-1° (2004)
Mon, 0247° / 30°0.04
47 °
Thornton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation25%
Record high64° (1965)
Record low-3° (1991)
Tue, 0348° / 28°0.03
48 °
Thornton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.03 in
Chance of precipitation17%
Record high64° (1962)
Record low-8° (1991)
Wed, 0448° / 29°0.04
48 °
Thornton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high63° (2001)
Record low8° (1991)
Thu, 0548° / 30°0.05
48 °
Thornton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.05 in
Chance of precipitation30%
Record high64° (2020)
Record low1° (1961)
Fri, 0648° / 31°0.07
48 °
Thornton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.07 in
Chance of precipitation28%
Record high68° (1999)
Record low4° (1971)
Sat, 0747° / 30°0.06
47 °
Thornton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.06 in
Chance of precipitation37%
Record high70° (1999)
Record low2° (1990)
Sun, 0845° / 29°0.08
45 °
Thornton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.08 in
Chance of precipitation42%
Record high62° (1999)
Record low13° (1961)
Mon, 0945° / 28°0.07
45 °
Thornton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.07 in
Chance of precipitation32%
Record high60° (1973)
Record low13° (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 Thornton, ID 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, ID 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.