Monthly outlook for Washington, IN: average high 71.1°, average low 49.6°. That is 2.5° above the climate normal for October. Precipitation is expected on 6 days (about 1.5 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (84.8°), the coolest 18 October (33.1°).
71.1°/49.6°
Average high / low
+2.5°
Above normal
6 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
73.8°
68°
+3.3°
19 October – 28 October
66.5°
63.6°
+1.6°
29 October – 7 November
at normal
60°
—
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).
Sat, 1075° / 54°0.34
75 °
Washington, Saturday, 10 October
Heavy rain. High 75°, low 54°.
Pressure30.09 inHg
Wind7.2 mph E
Humidity52%
Visibility6.2 mi
Dew point51°
Sun, 1176° / 52°0.66
76 °
Washington, Sunday, 11 October
Heavy rain. High 76°, low 52°.
Pressure29.91 inHg
Wind11 mph NW
Humidity80%
Visibility6.2 mi
Dew point60°
Mon, 1284° / 60°0
84 °
Washington, Monday, 12 October
Overcast. High 84°, low 60°.
Pressure29.97 inHg
Wind8.4 mph SW
Humidity64%
Visibility6.2 mi
Dew point63°
Tue, 1385° / 66°0
85 °
Washington, Tuesday, 13 October
Clear. High 85°, low 66°.
Pressure29.91 inHg
Wind10 mph SW
Humidity57%
Visibility6.2 mi
Dew point62°
Wed, 1479° / 67°0.13
79 °
Washington, Wednesday, 14 October
Light rain. High 79°, low 67°.
Pressure29.97 inHg
Wind6.9 mph NE
Humidity70%
Visibility—
Dew point67°
Thu, 1571° / 58°0.11
71 °
Washington, Thursday, 15 October
Light rain. High 71°, low 58°.
Pressure30.03 inHg
Wind11.9 mph E
Humidity71%
Visibility—
Dew point52°
Fri, 1676° / 51°0.21
76 °
Washington, Friday, 16 October
Rain. High 76°, low 51°.
Pressure29.97 inHg
Wind21.5 mph SW
Humidity42%
Visibility—
Dew point43°
Sat, 1751° / 39°0
51 °
Washington, Saturday, 17 October
Mostly clear. High 51°, low 39°.
Pressure30.36 inHg
Wind19.9 mph NW
Humidity35%
Visibility—
Dew point22°
Sun, 1857° / 33°0
57 °
Washington, Sunday, 18 October
Clear. High 57°, low 33°.
Pressure30.39 inHg
Wind5.7 mph S
Humidity31%
Visibility—
Dew point21°
Mon, 1965° / 40°0
65 °
Washington, Monday, 19 October
Overcast. High 65°, low 40°.
Pressure30.30 inHg
Wind9.1 mph S
Humidity25%
Visibility—
Dew point23°
Tue, 2071° / 44°0
71 °
Washington, Tuesday, 20 October
Clear. High 71°, low 44°.
Pressure30.36 inHg
Wind6.9 mph SE
Humidity27%
Visibility—
Dew point30°
Wed, 2174° / 49°0
74 °
Washington, Wednesday, 21 October
Overcast. High 74°, low 49°.
Pressure30.30 inHg
Wind9.2 mph S
Humidity31%
Visibility—
Dew point37°
Thu, 2274° / 51°0
74 °
Washington, Thursday, 22 October
Overcast. High 74°, low 51°.
Pressure30.09 inHg
Wind15 mph SW
Humidity36%
Visibility—
Dew point42°
Fri, 2364° / 43°0.05
64 °
Washington, Friday, 23 October
Light rain. High 64°, low 43°.
Pressure30.03 inHg
Wind16.4 mph SW
Humidity39%
Visibility—
Dew point35°
Sat, 2452° / 37°0
52 °
Washington, Saturday, 24 October
Clear. High 52°, low 37°.
Pressure30.12 inHg
Wind15.7 mph NW
Humidity40%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2563° / 48°0.1
63 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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 °
Washington, 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)
Sat, 0757° / 42°0.12
57 °
Washington, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.12 in
Chance of precipitation27%
Record high74° (2023)
Record low24° (1993)
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 Washington, 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 Washington, 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.