Monthly outlook for Decker, IN: average high 76.8°, average low 57.1°. That is 5.4° above the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 15 October (92.6°), the coolest 18 October (42°).
76.8°/57.1°
Average high / low
+5.4°
Above normal
5 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
80.3°
68.5°
+6.6°
18 October – 27 October
70.8°
63.9°
+3.8°
28 October – 6 November
at normal
60.4°
—
October records over 66 years
90.9°2 October 2019All-time high
26.2°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Petersburg (13 mi).
Fri, 0986° / 51°0
86 °
Decker, Friday, 9 October
Clear. High 86°, low 51°.
Pressure30.18 inHg
Wind5.5 mph SE
Humidity41%
Visibility6.2 mi
Dew point52°
Sat, 1074° / 58°0.12
74 °
Decker, Saturday, 10 October
Rain. High 74°, low 58°.
Pressure30.12 inHg
Wind7.4 mph E
Humidity51%
Visibility6.2 mi
Dew point53°
Sun, 1169° / 61°0.71
69 °
Decker, Sunday, 11 October
Heavy rain. High 69°, low 61°.
Pressure29.88 inHg
Wind3.2 mph N
Humidity93%
Visibility2.7 mi
Dew point61°
Mon, 1283° / 56°0
83 °
Decker, Monday, 12 October
Clear. High 83°, low 56°.
Pressure29.94 inHg
Wind10.3 mph SW
Humidity53%
Visibility—
Dew point60°
Tue, 1385° / 67°0
85 °
Decker, Tuesday, 13 October
Clear. High 85°, low 67°.
Pressure29.88 inHg
Wind10.5 mph SW
Humidity49%
Visibility—
Dew point60°
Wed, 1486° / 63°0
86 °
Decker, Wednesday, 14 October
Overcast. High 86°, low 63°.
Pressure29.97 inHg
Wind11.4 mph SE
Humidity51%
Visibility—
Dew point59°
Thu, 1593° / 72°0
93 °
Decker, Thursday, 15 October
Clear. High 93°, low 72°.
Pressure29.97 inHg
Wind17.5 mph SW
Humidity39%
Visibility—
Dew point61°
Fri, 1681° / 60°0.01
81 °
Decker, Friday, 16 October
Light rain. High 81°, low 60°.
Pressure30.15 inHg
Wind17.1 mph N
Humidity53%
Visibility—
Dew point59°
Sat, 1765° / 51°0
65 °
Decker, Saturday, 17 October
Partly cloudy. High 65°, low 51°.
Pressure30.47 inHg
Wind17.9 mph NE
Humidity38%
Visibility—
Dew point37°
Sun, 1869° / 42°0
69 °
Decker, Sunday, 18 October
Overcast. High 69°, low 42°.
Pressure30.39 inHg
Wind12.1 mph E
Humidity25%
Visibility—
Dew point26°
Mon, 1968° / 55°0.1
68 °
Decker, Monday, 19 October
Light rain. High 68°, low 55°.
Pressure30.30 inHg
Wind9.6 mph S
Humidity45%
Visibility—
Dew point41°
Tue, 2072° / 61°0.04
72 °
Decker, Tuesday, 20 October
Light rain. High 72°, low 61°.
Pressure30.21 inHg
Wind14.1 mph SW
Humidity56%
Visibility—
Dew point54°
Wed, 2175° / 60°0.25
75 °
Decker, Wednesday, 21 October
Light rain. High 75°, low 60°.
Pressure30.12 inHg
Wind11.1 mph SW
Humidity62%
Visibility—
Dew point58°
Thu, 2276° / 58°0.03
76 °
Decker, Thursday, 22 October
Light rain. High 76°, low 58°.
Pressure29.97 inHg
Wind15.2 mph SW
Humidity53%
Visibility—
Dew point55°
Fri, 2365° / 46°0
65 °
Decker, Friday, 23 October
Clear. High 65°, low 46°.
Pressure30.18 inHg
Wind7.6 mph E
Humidity33%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2464° / 49°0.1
64 °
Decker, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.1 in
Chance of precipitation27%
Record high78° (2010)
Record low27° (1981)
Sun, 2563° / 48°0.1
63 °
Decker, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high63°
Average low48°
Average precipitation0.1 in
Chance of precipitation23%
Record high79° (1963)
Record low30° (2013)
Mon, 2663° / 47°0.14
63 °
Decker, Monday, 26 October
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.14 in
Chance of precipitation32%
Record high81° (1963)
Record low26° (1962)
Tue, 2762° / 46°0.14
62 °
Decker, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.14 in
Chance of precipitation32%
Record high79° (2023)
Record low33° (1962)
Wed, 2861° / 45°0.11
61 °
Decker, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high61°
Average low45°
Average precipitation0.11 in
Chance of precipitation32%
Record high77° (1999)
Record low28° (1976)
Thu, 2961° / 46°0.11
61 °
Decker, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.11 in
Chance of precipitation27%
Record high79° (2016)
Record low27° (1976)
Fri, 3063° / 47°0.09
63 °
Decker, Friday, 30 October
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.09 in
Chance of precipitation28%
Record high78° (1971)
Record low30° (1980)
Sat, 3163° / 48°0.14
63 °
Decker, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high63°
Average low48°
Average precipitation0.14 in
Chance of precipitation35%
Record high77° (1974)
Record low27° (2023)
Sun, 0162° / 47°0.19
62 °
Decker, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.19 in
Chance of precipitation35%
Record high80° (2016)
Record low28° (1993)
Mon, 0260° / 45°0.07
60 °
Decker, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.07 in
Chance of precipitation27%
Record high79° (1961)
Record low28° (2014)
Tue, 0359° / 44°0.06
59 °
Decker, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.06 in
Chance of precipitation27%
Record high77° (2003)
Record low26° (1991)
Wed, 0459° / 45°0.09
59 °
Decker, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high59°
Average low45°
Average precipitation0.09 in
Chance of precipitation28%
Record high76° (2003)
Record low23° (1991)
Thu, 0558° / 44°0.11
58 °
Decker, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.11 in
Chance of precipitation32%
Record high78° (2024)
Record low22° (1991)
Fri, 0657° / 42°0.1
57 °
Decker, Friday, 6 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.1 in
Chance of precipitation38%
Record high73° (2023)
Record low28° (1982)
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 Decker, 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 Decker, 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.