Monthly outlook for Thornton, IA: average high 56.8°, average low 44.3°. That is 2.3° above the climate normal for October. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 24 October (74.3°), the coolest 2 November (35.1°).
56.8°/44.3°
Average high / low
+2.3°
Above normal
7 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
58.2°
54.4°
+2.2°
2 November – 11 November
54.5°
48.6°
+3.3°
12 November – 21 November
at normal
43.6°
—
October records over 66 years
86.7°1 October 2023All-time high
16.9°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Meservey (5 mi).
Sat, 2474° / 54°0
74 °
Thornton, Saturday, 24 October
Mostly clear. High 74°, low 54°.
Pressure30.18 inHg
Wind13.1 mph S
Humidity51%
Visibility6.2 mi
Dew point51°
Sun, 2564° / 49°0
64 °
Thornton, Sunday, 25 October
Overcast. High 64°, low 49°.
Pressure30.36 inHg
Wind7.4 mph NE
Humidity67%
Visibility6.2 mi
Dew point51°
Mon, 2656° / 47°0.06
56 °
Thornton, Monday, 26 October
Light rain. High 56°, low 47°.
Pressure30.39 inHg
Wind10 mph NE
Humidity74%
Visibility6.2 mi
Dew point43°
Tue, 2767° / 49°0.09
67 °
Thornton, Tuesday, 27 October
Light rain. High 67°, low 49°.
Pressure30.12 inHg
Wind14.4 mph SW
Humidity65%
Visibility—
Dew point51°
Wed, 2862° / 54°0.04
62 °
Thornton, Wednesday, 28 October
Light rain. High 62°, low 54°.
Pressure29.85 inHg
Wind21.7 mph SW
Humidity70%
Visibility—
Dew point51°
Thu, 2960° / 45°0.67
60 °
Thornton, Thursday, 29 October
Rain. High 60°, low 45°.
Pressure30.12 inHg
Wind18.3 mph SW
Humidity75%
Visibility—
Dew point40°
Fri, 3045° / 43°0.53
45 °
Thornton, Friday, 30 October
Rain. High 45°, low 43°.
Pressure30.09 inHg
Wind18.8 mph NE
Humidity83%
Visibility—
Dew point39°
Sat, 3143° / 39°0.1
43 °
Thornton, Saturday, 31 October
Light rain. High 43°, low 39°.
Pressure30.09 inHg
Wind16.2 mph NE
Humidity89%
Visibility—
Dew point36°
Sun, 0140° / 37°0.07
40 °
Thornton, Sunday, 1 November
Snow. High 40°, low 37°.
Pressure30.09 inHg
Wind12.9 mph NW
Humidity97%
Visibility—
Dew point37°
Mon, 0248° / 35°0
48 °
Thornton, Monday, 2 November
Partly cloudy. High 48°, low 35°.
Pressure30.24 inHg
Wind11.9 mph NW
Humidity44%
Visibility—
Dew point24°
Tue, 0352° / 36°0
52 °
Thornton, Tuesday, 3 November
Clear. High 52°, low 36°.
Pressure30.30 inHg
Wind10.7 mph NW
Humidity43%
Visibility—
Dew point27°
Wed, 0454° / 38°0
54 °
Thornton, Wednesday, 4 November
Clear. High 54°, low 38°.
Pressure30.27 inHg
Wind8 mph NW
Humidity41%
Visibility—
Dew point28°
Thu, 0558° / 39°0
58 °
Thornton, Thursday, 5 November
Mostly clear. High 58°, low 39°.
Pressure30.12 inHg
Wind15 mph SW
Humidity49%
Visibility—
Dew point35°
Fri, 0660° / 47°0
60 °
Thornton, Friday, 6 November
Overcast. High 60°, low 47°.
Pressure29.91 inHg
Wind15.6 mph SW
Humidity61%
Visibility—
Dew point43°
Sat, 0753° / 43°0
53 °
Thornton, Saturday, 7 November
Overcast. High 53°, low 43°.
Pressure30.09 inHg
Wind8.1 mph NW
Humidity49%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0849° / 33°0.04
49 °
Thornton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high75° (1999)
Record low-2° (1991)
Mon, 0948° / 33°0.12
48 °
Thornton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.12 in
Chance of precipitation32%
Record high71° (2022)
Record low15° (2018)
Tue, 1045° / 31°0.1
45 °
Thornton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.1 in
Chance of precipitation32%
Record high73° (2012)
Record low9° (2018)
Wed, 1144° / 29°0.07
44 °
Thornton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.07 in
Chance of precipitation25%
Record high67° (1964)
Record low6° (1986)
Thu, 1243° / 28°0.08
43 °
Thornton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.08 in
Chance of precipitation25%
Record high66° (2005)
Record low4° (2019)
Fri, 1344° / 29°0.06
44 °
Thornton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.06 in
Chance of precipitation25%
Record high71° (1999)
Record low3° (1986)
Sat, 1445° / 30°0.03
45 °
Thornton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.03 in
Chance of precipitation23%
Record high69° (2025)
Record low13° (2014)
Sun, 1545° / 30°0.07
45 °
Thornton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.07 in
Chance of precipitation20%
Record high68° (2001)
Record low15° (2000)
Mon, 1645° / 30°0.06
45 °
Thornton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.06 in
Chance of precipitation27%
Record high67° (2001)
Record low2° (1997)
Tue, 1745° / 31°0.09
45 °
Thornton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.09 in
Chance of precipitation28%
Record high68° (2016)
Record low9° (1961)
Wed, 1844° / 29°0.06
44 °
Thornton, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (1999)
Record low-1° (1961)
Thu, 1944° / 29°0.08
44 °
Thornton, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.08 in
Chance of precipitation27%
Record high63° (2020)
Record low4° (1986)
Fri, 2041° / 28°0.09
41 °
Thornton, Friday, 20 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.09 in
Chance of precipitation28%
Record high63° (2003)
Record low8° (1964)
Sat, 2140° / 25°0.04
40 °
Thornton, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.04 in
Chance of precipitation17%
Record high70° (1990)
Record low0° (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, IA 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, IA 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.