Monthly outlook for Thornton, ID: average high 58°, average low 39.8°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 21 October (66.1°), the coolest 1 November (30.4°).
58°/39.8°
Average high / low
+2.5°
Above normal
4 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
62.3°
56°
+3.5°
27 October – 5 November
51°
49°
+1.1°
6 November – 15 November
at normal
44.3°
—
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).
Sun, 1866° / 33°0
66 °
Thornton, Sunday, 18 October
Overcast. High 66°, low 33°.
Pressure30.12 inHg
Wind1.4 mph NW
Humidity44%
Visibility6.2 mi
Dew point33°
Mon, 1964° / 35°0
64 °
Thornton, Monday, 19 October
Clear. High 64°, low 35°.
Pressure30.03 inHg
Wind0.4 mph W
Humidity46%
Visibility6.2 mi
Dew point37°
Tue, 2063° / 41°0.02
63 °
Thornton, Tuesday, 20 October
Light rain. High 63°, low 41°.
Pressure30.06 inHg
Wind4.6 mph SE
Humidity73%
Visibility6.2 mi
Dew point48°
Wed, 2166° / 41°0
66 °
Thornton, Wednesday, 21 October
Mostly clear. High 66°, low 41°.
Pressure30.06 inHg
Wind1.8 mph SW
Humidity54%
Visibility6.2 mi
Dew point45°
Thu, 2262° / 44°0.12
62 °
Thornton, Thursday, 22 October
Light rain. High 62°, low 44°.
Pressure30.00 inHg
Wind9 mph N
Humidity81%
Visibility—
Dew point48°
Fri, 2355° / 46°0.35
55 °
Thornton, Friday, 23 October
Light rain. High 55°, low 46°.
Pressure29.83 inHg
Wind11.8 mph N
Humidity77%
Visibility—
Dew point44°
Sat, 2459° / 43°0
59 °
Thornton, Saturday, 24 October
Light rain. High 59°, low 43°.
Pressure30.09 inHg
Wind6.4 mph SW
Humidity64%
Visibility—
Dew point40°
Sun, 2559° / 42°0
59 °
Thornton, Sunday, 25 October
Clear. High 59°, low 42°.
Pressure30.18 inHg
Wind5.1 mph SE
Humidity54%
Visibility—
Dew point36°
Mon, 2664° / 43°0
64 °
Thornton, Monday, 26 October
Clear. High 64°, low 43°.
Pressure30.03 inHg
Wind5.9 mph N
Humidity38%
Visibility—
Dew point31°
Tue, 2758° / 44°0.04
58 °
Thornton, Tuesday, 27 October
Light rain. High 58°, low 44°.
Pressure29.80 inHg
Wind7.6 mph SW
Humidity33%
Visibility—
Dew point26°
Wed, 2858° / 46°0.21
58 °
Thornton, Wednesday, 28 October
Light rain. High 58°, low 46°.
Pressure29.85 inHg
Wind18.1 mph SW
Humidity62%
Visibility—
Dew point40°
Thu, 2949° / 39°0.04
49 °
Thornton, Thursday, 29 October
Light rain. High 49°, low 39°.
Pressure29.85 inHg
Wind24.7 mph SW
Humidity48%
Visibility—
Dew point27°
Fri, 3047° / 35°0
47 °
Thornton, Friday, 30 October
Overcast. High 47°, low 35°.
Pressure29.88 inHg
Wind20.6 mph SW
Humidity50%
Visibility—
Dew point25°
Sat, 3152° / 40°0.39
52 °
Thornton, Saturday, 31 October
Rain. High 52°, low 40°.
Pressure29.62 inHg
Wind27 mph S
Humidity57%
Visibility—
Dew point34°
Sun, 0142° / 30°0
42 °
Thornton, Sunday, 1 November
Partly cloudy. High 42°, low 30°.
Pressure30.18 inHg
Wind25.1 mph SW
Humidity48%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1044° / 27°0.04
44 °
Thornton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.04 in
Chance of precipitation28%
Record high60° (2016)
Record low3° (1986)
Wed, 1144° / 27°0.04
44 °
Thornton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.04 in
Chance of precipitation27%
Record high63° (1999)
Record low-6° (2000)
Thu, 1244° / 27°0.06
44 °
Thornton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.06 in
Chance of precipitation27%
Record high65° (1999)
Record low1° (2022)
Fri, 1343° / 28°0.06
43 °
Thornton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.06 in
Chance of precipitation35%
Record high62° (1999)
Record low-7° (2000)
Sat, 1442° / 26°0.06
42 °
Thornton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.06 in
Chance of precipitation27%
Record high64° (1999)
Record low-4° (2022)
Sun, 1542° / 24°0.03
42 °
Thornton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.03 in
Chance of precipitation22%
Record high66° (1999)
Record low-9° (1978)
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.