Monthly outlook for Thornton, ID: average high 56°, average low 37°. That is 0.5° below the climate normal for October. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 19 October (67.5°), the coolest 22 October (31.3°).
56°/37°
Average high / low
−0.5°
Below normal
3 / 4
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
57.4°
58.2°
-0.4°
21 October – 30 October
53.6°
52.9°
+0.4°
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, 1250° / 42°0.11
50 °
Thornton, Monday, 12 October
Light rain. High 50°, low 42°.
Pressure29.88 inHg
Wind7 mph W
Humidity92%
Visibility6.2 mi
Dew point41°
Tue, 1351° / 37°0.19
51 °
Thornton, Tuesday, 13 October
Rain. High 51°, low 37°.
Pressure30.06 inHg
Wind4.7 mph W
Humidity74%
Visibility6.2 mi
Dew point36°
Wed, 1453° / 34°0
53 °
Thornton, Wednesday, 14 October
Mostly clear. High 53°, low 34°.
Pressure30.18 inHg
Wind1.6 mph NW
Humidity71%
Visibility4.6 mi
Dew point37°
Thu, 1563° / 37°0
63 °
Thornton, Thursday, 15 October
Clear. High 63°, low 37°.
Pressure30.45 inHg
Wind12.2 mph NE
Humidity43%
Visibility5.1 mi
Dew point35°
Fri, 1661° / 33°0
61 °
Thornton, Friday, 16 October
Clear. High 61°, low 33°.
Pressure30.50 inHg
Wind5.2 mph NE
Humidity47%
Visibility—
Dew point31°
Sat, 1763° / 35°0
63 °
Thornton, Saturday, 17 October
Clear. High 63°, low 35°.
Pressure30.15 inHg
Wind6.8 mph SW
Humidity45%
Visibility—
Dew point33°
Sun, 1865° / 45°0
65 °
Thornton, Sunday, 18 October
Overcast. High 65°, low 45°.
Pressure30.03 inHg
Wind8 mph SE
Humidity33%
Visibility—
Dew point29°
Mon, 1968° / 45°0
68 °
Thornton, Monday, 19 October
Overcast. High 68°, low 45°.
Pressure29.83 inHg
Wind20.8 mph SW
Humidity28%
Visibility—
Dew point28°
Tue, 2049° / 39°0
49 °
Thornton, Tuesday, 20 October
Overcast. High 49°, low 39°.
Pressure29.91 inHg
Wind23.4 mph S
Humidity52%
Visibility—
Dew point28°
Wed, 2146° / 32°0
46 °
Thornton, Wednesday, 21 October
Overcast. High 46°, low 32°.
Pressure30.24 inHg
Wind16.6 mph SW
Humidity54%
Visibility—
Dew point24°
Thu, 2252° / 31°0
52 °
Thornton, Thursday, 22 October
Clear. High 52°, low 31°.
Pressure30.39 inHg
Wind8.5 mph S
Humidity37%
Visibility—
Dew point20°
Fri, 2359° / 35°0
59 °
Thornton, Friday, 23 October
Clear. High 59°, low 35°.
Pressure30.03 inHg
Wind6.6 mph W
Humidity35%
Visibility—
Dew point24°
Sat, 2458° / 42°0
58 °
Thornton, Saturday, 24 October
Partly cloudy. High 58°, low 42°.
Pressure29.68 inHg
Wind23.3 mph SW
Humidity29%
Visibility—
Dew point23°
Sun, 2551° / 33°0
51 °
Thornton, Sunday, 25 October
Clear. High 51°, low 33°.
Pressure30.03 inHg
Wind7.1 mph S
Humidity39%
Visibility—
Dew point20°
Mon, 2655° / 34°0
55 °
Thornton, Monday, 26 October
Mostly clear. High 55°, low 34°.
Pressure30.09 inHg
Wind3.9 mph N
Humidity40%
Visibility—
Dew point24°
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.