Monthly outlook for Harlan, IN: average high 60.5°, average low 44.2°. That is 2.4° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 22 October (69.7°), the coolest 30 October (36.9°).
60.5°/44.2°
Average high / low
+2.4°
Above normal
4 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
64.4°
57.3°
+3.9°
1 November – 10 November
53.9°
53.1°
+0.5°
11 November – 20 November
at normal
47.6°
—
October records over 66 years
86.5°1 October 2019All-time high
22.5°31 October 1988All-time low
Climate normals and records are computed from the nearest reference point — St. Joe (8 mi).
Fri, 2368° / 42°0
68 °
Harlan, Friday, 23 October
Clear. High 68°, low 42°.
Pressure30.39 inHg
Wind3 mph SE
Humidity67%
Visibility6.2 mi
Dew point49°
Sat, 2465° / 44°0
65 °
Harlan, Saturday, 24 October
Clear. High 65°, low 44°.
Pressure30.45 inHg
Wind2.2 mph SE
Humidity76%
Visibility6.2 mi
Dew point51°
Sun, 2567° / 44°0
67 °
Harlan, Sunday, 25 October
Overcast. High 67°, low 44°.
Pressure30.47 inHg
Wind3.5 mph S
Humidity64%
Visibility6.2 mi
Dew point49°
Mon, 2669° / 47°0
69 °
Harlan, Monday, 26 October
Overcast. High 69°, low 47°.
Pressure30.36 inHg
Wind3.6 mph SW
Humidity51%
Visibility—
Dew point47°
Tue, 2766° / 49°0
66 °
Harlan, Tuesday, 27 October
Overcast. High 66°, low 49°.
Pressure30.33 inHg
Wind9 mph NE
Humidity58%
Visibility—
Dew point48°
Wed, 2863° / 48°0.12
63 °
Harlan, Wednesday, 28 October
Light rain. High 63°, low 48°.
Pressure30.21 inHg
Wind8.6 mph SE
Humidity59%
Visibility—
Dew point45°
Thu, 2962° / 41°0.15
62 °
Harlan, Thursday, 29 October
Light rain. High 62°, low 41°.
Pressure30.03 inHg
Wind17 mph SW
Humidity89%
Visibility—
Dew point54°
Fri, 3055° / 37°0
55 °
Harlan, Friday, 30 October
Clear. High 55°, low 37°.
Pressure30.30 inHg
Wind6.9 mph S
Humidity42%
Visibility—
Dew point29°
Sat, 3160° / 56°0.34
60 °
Harlan, Saturday, 31 October
Light rain. High 60°, low 56°.
Pressure29.83 inHg
Wind17.5 mph SW
Humidity84%
Visibility—
Dew point52°
Sun, 0163° / 49°0.02
63 °
Harlan, Sunday, 1 November
Light rain. High 63°, low 49°.
Pressure29.94 inHg
Wind11.7 mph SW
Humidity53%
Visibility—
Dew point43°
Mon, 0256° / 46°0
56 °
Harlan, Monday, 2 November
Overcast. High 56°, low 46°.
Pressure30.12 inHg
Wind15.7 mph NE
Humidity43%
Visibility—
Dew point32°
Tue, 0354° / 39°0
54 °
Harlan, Tuesday, 3 November
Partly cloudy. High 54°, low 39°.
Pressure30.33 inHg
Wind13 mph NE
Humidity47%
Visibility—
Dew point32°
Wed, 0451° / 40°0
51 °
Harlan, Wednesday, 4 November
Overcast. High 51°, low 40°.
Pressure30.42 inHg
Wind18.1 mph NE
Humidity47%
Visibility—
Dew point30°
Thu, 0552° / 41°0
52 °
Harlan, Thursday, 5 November
Overcast. High 52°, low 41°.
Pressure30.36 inHg
Wind18.1 mph E
Humidity26%
Visibility—
Dew point17°
Fri, 0648° / 42°0.15
48 °
Harlan, Friday, 6 November
Light rain. High 48°, low 42°.
Pressure30.24 inHg
Wind10.3 mph SE
Humidity91%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0751° / 38°0.11
51 °
Harlan, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.11 in
Chance of precipitation28%
Record high67° (2020)
Record low22° (1993)
Sun, 0851° / 38°0.04
51 °
Harlan, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.04 in
Chance of precipitation20%
Record high72° (2020)
Record low19° (1991)
Mon, 0953° / 38°0.12
53 °
Harlan, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.12 in
Chance of precipitation37%
Record high74° (2020)
Record low18° (1991)
Tue, 1051° / 38°0.12
51 °
Harlan, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.12 in
Chance of precipitation40%
Record high73° (2020)
Record low18° (2018)
Wed, 1149° / 35°0.09
49 °
Harlan, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.09 in
Chance of precipitation35%
Record high69° (1964)
Record low21° (2017)
Thu, 1247° / 33°0.08
47 °
Harlan, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.08 in
Chance of precipitation20%
Record high70° (1964)
Record low11° (2019)
Fri, 1347° / 33°0.06
47 °
Harlan, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high69° (2010)
Record low2° (2019)
Sat, 1448° / 33°0.12
48 °
Harlan, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.12 in
Chance of precipitation35%
Record high68° (1971)
Record low11° (1986)
Sun, 1548° / 35°0.12
48 °
Harlan, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.12 in
Chance of precipitation40%
Record high67° (2025)
Record low19° (1996)
Mon, 1647° / 33°0.09
47 °
Harlan, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.09 in
Chance of precipitation27%
Record high64° (2023)
Record low12° (1997)
Tue, 1747° / 34°0.1
47 °
Harlan, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.1 in
Chance of precipitation38%
Record high68° (1971)
Record low14° (2014)
Wed, 1848° / 34°0.11
48 °
Harlan, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.11 in
Chance of precipitation23%
Record high70° (2016)
Record low10° (2014)
Thu, 1948° / 35°0.09
48 °
Harlan, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation37%
Record high67° (1985)
Record low13° (2014)
Fri, 2047° / 33°0.11
47 °
Harlan, Friday, 20 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.11 in
Chance of precipitation32%
Record high68° (1985)
Record low16° (1969)
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 Harlan, 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 Harlan, 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.