Monthly outlook for Thornton, ID: average high 54.8°, average low 38.6°. That is 0.9° below the climate normal for October. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 19 October (68.6°), the coolest 15 October (33.3°).
54.8°/38.6°
Average high / low
−0.9°
Below normal
5 / 4
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
57.7°
58°
-0.2°
22 October – 31 October
50°
52.1°
-1.1°
1 November – 10 November
at normal
46.7°
—
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).
Tue, 1349° / 38°0.13
49 °
Thornton, Tuesday, 13 October
Rain. High 49°, low 38°.
Pressure30.00 inHg
Wind5.8 mph W
Humidity67%
Visibility6.2 mi
Dew point35°
Wed, 1452° / 34°0
52 °
Thornton, Wednesday, 14 October
Partly cloudy. High 52°, low 34°.
Pressure30.24 inHg
Wind1.7 mph W
Humidity73%
Visibility6.2 mi
Dew point37°
Thu, 1563° / 33°0
63 °
Thornton, Thursday, 15 October
Clear. High 63°, low 33°.
Pressure30.47 inHg
Wind7 mph NE
Humidity48%
Visibility2.2 mi
Dew point36°
Fri, 1662° / 34°0
62 °
Thornton, Friday, 16 October
Clear. High 62°, low 34°.
Pressure30.50 inHg
Wind4.4 mph NE
Humidity52%
Visibility6.2 mi
Dew point38°
Sat, 1762° / 36°0
62 °
Thornton, Saturday, 17 October
Clear. High 62°, low 36°.
Pressure30.21 inHg
Wind7 mph SW
Humidity47%
Visibility—
Dew point34°
Sun, 1863° / 40°0
63 °
Thornton, Sunday, 18 October
Overcast. High 63°, low 40°.
Pressure30.03 inHg
Wind6.8 mph SW
Humidity44%
Visibility—
Dew point33°
Mon, 1969° / 44°0
69 °
Thornton, Monday, 19 October
Partly cloudy. High 69°, low 44°.
Pressure29.88 inHg
Wind13.5 mph SW
Humidity28%
Visibility—
Dew point28°
Tue, 2060° / 48°0.19
60 °
Thornton, Tuesday, 20 October
Light rain. High 60°, low 48°.
Pressure29.65 inHg
Wind17 mph S
Humidity42%
Visibility—
Dew point36°
Wed, 2151° / 44°0.61
51 °
Thornton, Wednesday, 21 October
Rain. High 51°, low 44°.
Pressure29.74 inHg
Wind9.4 mph NE
Humidity73%
Visibility—
Dew point40°
Thu, 2248° / 37°0.29
48 °
Thornton, Thursday, 22 October
Light rain. High 48°, low 37°.
Pressure29.91 inHg
Wind15.1 mph N
Humidity73%
Visibility—
Dew point33°
Fri, 2348° / 37°0
48 °
Thornton, Friday, 23 October
Overcast. High 48°, low 37°.
Pressure30.24 inHg
Wind11.3 mph SW
Humidity56%
Visibility—
Dew point29°
Sat, 2452° / 34°0
52 °
Thornton, Saturday, 24 October
Partly cloudy. High 52°, low 34°.
Pressure30.24 inHg
Wind7.5 mph SW
Humidity44%
Visibility—
Dew point26°
Sun, 2547° / 41°0
47 °
Thornton, Sunday, 25 October
Overcast. High 47°, low 41°.
Pressure30.15 inHg
Wind8.9 mph SW
Humidity71%
Visibility—
Dew point35°
Mon, 2652° / 37°0
52 °
Thornton, Monday, 26 October
Overcast. High 52°, low 37°.
Pressure30.15 inHg
Wind11.7 mph SW
Humidity58%
Visibility—
Dew point32°
Tue, 2754° / 39°0
54 °
Thornton, Tuesday, 27 October
Mostly clear. High 54°, low 39°.
Pressure30.06 inHg
Wind17.1 mph SW
Humidity56%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.