Monthly outlook for Derby, IN: average high 69.2°, average low 47°. That is 1.4° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (84.9°), the coolest 18 October (29.7°).
69.2°/47°
Average high / low
+1.4°
Above normal
3 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
69.5°
67.9°
+0.9°
21 October – 30 October
68.9°
64.2°
+2.6°
31 October – 9 November
at normal
60.4°
—
October records over 66 years
91.9°2 October 2019All-time high
29.3°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Tell City (14 mi).
Mon, 1283° / 50°0
83 °
Derby, Monday, 12 October
Clear. High 83°, low 50°.
Pressure30.03 inHg
Wind6.4 mph SW
Humidity58%
Visibility6.2 mi
Dew point63°
Tue, 1385° / 65°0
85 °
Derby, Tuesday, 13 October
Clear. High 85°, low 65°.
Pressure29.97 inHg
Wind8.9 mph SW
Humidity48%
Visibility6.2 mi
Dew point60°
Wed, 1484° / 68°0.01
84 °
Derby, Wednesday, 14 October
Light rain. High 84°, low 68°.
Pressure30.03 inHg
Wind7.2 mph SW
Humidity58%
Visibility6.2 mi
Dew point66°
Thu, 1577° / 70°0.6
77 °
Derby, Thursday, 15 October
Rain. High 77°, low 70°.
Pressure30.09 inHg
Wind6.6 mph SW
Humidity84%
Visibility—
Dew point71°
Fri, 1672° / 50°0.19
72 °
Derby, Friday, 16 October
Rain. High 72°, low 50°.
Pressure30.21 inHg
Wind12.8 mph N
Humidity54%
Visibility—
Dew point53°
Sat, 1743° / 35°0
43 °
Derby, Saturday, 17 October
Overcast. High 43°, low 35°.
Pressure30.27 inHg
Wind14.5 mph NW
Humidity45%
Visibility—
Dew point22°
Sun, 1851° / 30°0
51 °
Derby, Sunday, 18 October
Clear. High 51°, low 30°.
Pressure30.53 inHg
Wind6.8 mph NW
Humidity32%
Visibility—
Dew point19°
Mon, 1960° / 31°0
60 °
Derby, Monday, 19 October
Mostly clear. High 60°, low 31°.
Pressure30.42 inHg
Wind5.9 mph SW
Humidity21%
Visibility—
Dew point15°
Tue, 2067° / 37°0
67 °
Derby, Tuesday, 20 October
Clear. High 67°, low 37°.
Pressure30.33 inHg
Wind6.4 mph SW
Humidity25%
Visibility—
Dew point25°
Wed, 2170° / 42°0
70 °
Derby, Wednesday, 21 October
Overcast. High 70°, low 42°.
Pressure30.33 inHg
Wind6 mph SW
Humidity25%
Visibility—
Dew point29°
Thu, 2273° / 48°0
73 °
Derby, Thursday, 22 October
Partly cloudy. High 73°, low 48°.
Pressure30.33 inHg
Wind4.6 mph W
Humidity25%
Visibility—
Dew point32°
Fri, 2373° / 49°0
73 °
Derby, Friday, 23 October
Clear. High 73°, low 49°.
Pressure30.30 inHg
Wind7.1 mph E
Humidity39%
Visibility—
Dew point43°
Sat, 2477° / 51°0
77 °
Derby, Saturday, 24 October
Partly cloudy. High 77°, low 51°.
Pressure30.09 inHg
Wind12.9 mph SW
Humidity30%
Visibility—
Dew point40°
Sun, 2559° / 39°0
59 °
Derby, Sunday, 25 October
Clear. High 59°, low 39°.
Pressure30.33 inHg
Wind6.7 mph NW
Humidity37%
Visibility—
Dew point30°
Mon, 2661° / 37°0
61 °
Derby, Monday, 26 October
Clear. High 61°, low 37°.
Pressure30.15 inHg
Wind6.4 mph W
Humidity33%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2763° / 48°0.15
63 °
Derby, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high63°
Average low48°
Average precipitation0.15 in
Chance of precipitation28%
Record high81° (2023)
Record low34° (1962)
Wed, 2863° / 47°0.1
63 °
Derby, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.1 in
Chance of precipitation33%
Record high78° (1971)
Record low30° (1976)
Thu, 2962° / 47°0.13
62 °
Derby, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.13 in
Chance of precipitation27%
Record high81° (2016)
Record low31° (1976)
Fri, 3064° / 48°0.09
64 °
Derby, Friday, 30 October
Climate normal for this date — 60-year average.
Average high64°
Average low48°
Average precipitation0.09 in
Chance of precipitation25%
Record high79° (2016)
Record low33° (1993)
Sat, 3164° / 49°0.13
64 °
Derby, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.13 in
Chance of precipitation30%
Record high78° (1974)
Record low32° (2023)
Sun, 0164° / 49°0.19
64 °
Derby, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.19 in
Chance of precipitation33%
Record high83° (2016)
Record low27° (1993)
Mon, 0262° / 47°0.08
62 °
Derby, Monday, 2 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.08 in
Chance of precipitation32%
Record high81° (2016)
Record low31° (2014)
Tue, 0360° / 45°0.06
60 °
Derby, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.06 in
Chance of precipitation33%
Record high78° (2003)
Record low26° (1966)
Wed, 0460° / 46°0.07
60 °
Derby, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (2003)
Record low23° (1991)
Thu, 0559° / 45°0.09
59 °
Derby, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high59°
Average low45°
Average precipitation0.09 in
Chance of precipitation28%
Record high79° (2024)
Record low22° (1991)
Fri, 0658° / 44°0.12
58 °
Derby, Friday, 6 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.12 in
Chance of precipitation33%
Record high73° (2023)
Record low29° (1967)
Sat, 0758° / 44°0.13
58 °
Derby, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.13 in
Chance of precipitation28%
Record high74° (2020)
Record low28° (1971)
Sun, 0859° / 44°0.04
59 °
Derby, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.04 in
Chance of precipitation15%
Record high79° (2023)
Record low24° (2019)
Mon, 0959° / 44°0.12
59 °
Derby, Monday, 9 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.12 in
Chance of precipitation28%
Record high76° (2022)
Record low22° (1991)
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 Derby, IN 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 Derby, IN 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.