Monthly outlook for Porter, IN: average high 60.6°, average low 50°. That is 1.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 12 October (82°), the coolest 18 October (36°).
60.6°/50°
Average high / low
+1.1°
Above normal
5 / 6
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
62.2°
59.7°
+1.4°
21 October – 30 October
57.8°
56.1°
+0.9°
31 October – 9 November
at normal
52.1°
—
October records over 66 years
85.5°3 October 2025All-time high
29.1°31 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Beverly Shores (7 mi).
Mon, 1282° / 65°0
82 °
Porter, Monday, 12 October
Overcast. High 82°, low 65°.
Pressure29.88 inHg
Wind11.8 mph SW
Humidity69%
Visibility6.2 mi
Dew point62°
Tue, 1374° / 67°0
74 °
Porter, Tuesday, 13 October
Clear. High 74°, low 67°.
Pressure29.80 inHg
Wind12.2 mph SW
Humidity72%
Visibility6.2 mi
Dew point62°
Wed, 1467° / 59°0.3
67 °
Porter, Wednesday, 14 October
Rain. High 67°, low 59°.
Pressure30.06 inHg
Wind12.3 mph N
Humidity88%
Visibility6.2 mi
Dew point60°
Thu, 1558° / 54°0
58 °
Porter, Thursday, 15 October
Overcast. High 58°, low 54°.
Pressure30.30 inHg
Wind19.4 mph NE
Humidity66%
Visibility—
Dew point46°
Fri, 1657° / 44°0.04
57 °
Porter, Friday, 16 October
Light rain. High 57°, low 44°.
Pressure30.27 inHg
Wind29.7 mph N
Humidity65%
Visibility—
Dew point44°
Sat, 1744° / 40°0.9
44 °
Porter, Saturday, 17 October
Rain. High 44°, low 40°.
Pressure30.36 inHg
Wind35.3 mph N
Humidity85%
Visibility—
Dew point37°
Sun, 1848° / 36°0.1
48 °
Porter, Sunday, 18 October
Snow. High 48°, low 36°.
Pressure30.62 inHg
Wind12 mph S
Humidity56%
Visibility—
Dew point29°
Mon, 1955° / 40°0
55 °
Porter, Monday, 19 October
Partly cloudy. High 55°, low 40°.
Pressure30.47 inHg
Wind16.5 mph SW
Humidity39%
Visibility—
Dew point27°
Tue, 2060° / 44°0
60 °
Porter, Tuesday, 20 October
Clear. High 60°, low 44°.
Pressure30.36 inHg
Wind12.1 mph S
Humidity37%
Visibility—
Dew point30°
Wed, 2164° / 47°0
64 °
Porter, Wednesday, 21 October
Partly cloudy. High 64°, low 47°.
Pressure30.09 inHg
Wind20.8 mph SW
Humidity41%
Visibility—
Dew point37°
Thu, 2259° / 52°0
59 °
Porter, Thursday, 22 October
Clear. High 59°, low 52°.
Pressure30.09 inHg
Wind14.3 mph N
Humidity60%
Visibility—
Dew point44°
Fri, 2352° / 48°0
52 °
Porter, Friday, 23 October
Overcast. High 52°, low 48°.
Pressure30.30 inHg
Wind14.5 mph NW
Humidity64%
Visibility—
Dew point39°
Sat, 2453° / 47°0
53 °
Porter, Saturday, 24 October
Partly cloudy. High 53°, low 47°.
Pressure30.33 inHg
Wind8.3 mph NW
Humidity55%
Visibility—
Dew point37°
Sun, 2556° / 50°0
56 °
Porter, Sunday, 25 October
Overcast. High 56°, low 50°.
Pressure30.27 inHg
Wind10.2 mph SW
Humidity57%
Visibility—
Dew point40°
Mon, 2662° / 50°0.06
62 °
Porter, Monday, 26 October
Light rain. High 62°, low 50°.
Pressure30.12 inHg
Wind16 mph S
Humidity61%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2755° / 46°0.09
55 °
Porter, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.09 in
Chance of precipitation35%
Record high71° (2023)
Record low34° (1976)
Wed, 2855° / 46°0.08
55 °
Porter, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.08 in
Chance of precipitation30%
Record high66° (1999)
Record low35° (1976)
Thu, 2955° / 46°0.05
55 °
Porter, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.05 in
Chance of precipitation25%
Record high77° (2024)
Record low35° (1965)
Fri, 3056° / 46°0.11
56 °
Porter, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.11 in
Chance of precipitation33%
Record high76° (2024)
Record low33° (2020)
Sat, 3155° / 46°0.15
55 °
Porter, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.15 in
Chance of precipitation43%
Record high70° (2024)
Record low29° (2023)
Sun, 0154° / 46°0.19
54 °
Porter, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low46°
Average precipitation0.19 in
Chance of precipitation47%
Record high71° (2016)
Record low27° (2019)
Mon, 0253° / 44°0.13
53 °
Porter, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.13 in
Chance of precipitation43%
Record high69° (1961)
Record low28° (1991)
Tue, 0352° / 44°0.07
52 °
Porter, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.07 in
Chance of precipitation27%
Record high69° (2022)
Record low22° (1991)
Wed, 0452° / 44°0.09
52 °
Porter, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.09 in
Chance of precipitation27%
Record high68° (2022)
Record low22° (1991)
Thu, 0552° / 44°0.13
52 °
Porter, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.13 in
Chance of precipitation28%
Record high70° (2024)
Record low23° (1991)
Fri, 0652° / 42°0.08
52 °
Porter, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.08 in
Chance of precipitation37%
Record high70° (2020)
Record low29° (1991)
Sat, 0750° / 42°0.08
50 °
Porter, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.08 in
Chance of precipitation23%
Record high70° (2020)
Record low27° (1993)
Sun, 0850° / 42°0.06
50 °
Porter, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.06 in
Chance of precipitation22%
Record high75° (2020)
Record low26° (1991)
Mon, 0951° / 42°0.14
51 °
Porter, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.14 in
Chance of precipitation37%
Record high72° (2020)
Record low25° (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 Porter, 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 Porter, 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.