Monthly outlook for O'Leary, IA: average high 61.5°, average low 48.5°. That is 1.8° above the climate normal for October. Precipitation is expected on 9 days (about 2.6 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 22 October (71.8°), the coolest 17 October (34.7°).
61.5°/48.5°
Average high / low
+1.8°
Above normal
9 / 4
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
61.5°
59.5°
+1.1°
25 October – 3 November
61.5°
54.5°
+3.9°
4 November – 13 November
at normal
48.6°
—
October records over 66 years
88.9°3 October 2025All-time high
16.5°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Kingsley (10 mi).
Fri, 1651° / 38°0
51 °
O'Leary, Friday, 16 October
Clear. High 51°, low 38°.
Pressure30.59 inHg
Wind18.5 mph N
Humidity54%
Visibility6.2 mi
Dew point29°
Sat, 1758° / 35°0
58 °
O'Leary, Saturday, 17 October
Clear. High 58°, low 35°.
Pressure30.45 inHg
Wind14.1 mph S
Humidity46%
Visibility6.2 mi
Dew point31°
Sun, 1863° / 43°0
63 °
O'Leary, Sunday, 18 October
Clear. High 63°, low 43°.
Pressure30.18 inHg
Wind13.4 mph S
Humidity55%
Visibility6.2 mi
Dew point40°
Mon, 1958° / 48°0
58 °
O'Leary, Monday, 19 October
Overcast. High 58°, low 48°.
Pressure30.18 inHg
Wind8.7 mph S
Humidity72%
Visibility6.2 mi
Dew point46°
Tue, 2068° / 47°0
68 °
O'Leary, Tuesday, 20 October
Clear. High 68°, low 47°.
Pressure30.15 inHg
Wind7.9 mph SE
Humidity58%
Visibility—
Dew point47°
Wed, 2166° / 53°0.1
66 °
O'Leary, Wednesday, 21 October
Light rain. High 66°, low 53°.
Pressure30.12 inHg
Wind16 mph S
Humidity59%
Visibility—
Dew point49°
Thu, 2272° / 60°0.09
72 °
O'Leary, Thursday, 22 October
Light rain. High 72°, low 60°.
Pressure29.94 inHg
Wind18.7 mph S
Humidity61%
Visibility—
Dew point55°
Fri, 2365° / 61°0.82
65 °
O'Leary, Friday, 23 October
Rain. High 65°, low 61°.
Pressure29.91 inHg
Wind23 mph S
Humidity76%
Visibility—
Dew point55°
Sat, 2461° / 50°0.19
61 °
O'Leary, Saturday, 24 October
Light rain. High 61°, low 50°.
Pressure30.12 inHg
Wind21.2 mph S
Humidity57%
Visibility—
Dew point42°
Sun, 2562° / 46°0
62 °
O'Leary, Sunday, 25 October
Clear. High 62°, low 46°.
Pressure30.50 inHg
Wind12.7 mph SE
Humidity35%
Visibility—
Dew point30°
Mon, 2657° / 48°0.56
57 °
O'Leary, Monday, 26 October
Rain. High 57°, low 48°.
Pressure30.24 inHg
Wind15.5 mph SE
Humidity67%
Visibility—
Dew point42°
Tue, 2766° / 59°0.05
66 °
O'Leary, Tuesday, 27 October
Light rain. High 66°, low 59°.
Pressure29.91 inHg
Wind16.6 mph SE
Humidity79%
Visibility—
Dew point59°
Wed, 2863° / 53°0.42
63 °
O'Leary, Wednesday, 28 October
Rain. High 63°, low 53°.
Pressure29.83 inHg
Wind24.2 mph S
Humidity46%
Visibility—
Dew point39°
Thu, 2963° / 48°0
63 °
O'Leary, Thursday, 29 October
Mostly clear. High 63°, low 48°.
Pressure29.83 inHg
Wind14.5 mph S
Humidity43%
Visibility—
Dew point38°
Fri, 3058° / 40°0.06
58 °
O'Leary, Friday, 30 October
Light rain. High 58°, low 40°.
Pressure29.77 inHg
Wind20.2 mph NW
Humidity49%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3153° / 37°0.09
53 °
O'Leary, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.09 in
Chance of precipitation27%
Record high74° (1968)
Record low18° (1993)
Sun, 0152° / 37°0.08
52 °
O'Leary, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.08 in
Chance of precipitation25%
Record high74° (1990)
Record low19° (2002)
Mon, 0252° / 36°0.04
52 °
O'Leary, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.04 in
Chance of precipitation17%
Record high73° (2022)
Record low10° (1991)
Tue, 0352° / 36°0.06
52 °
O'Leary, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.06 in
Chance of precipitation18%
Record high74° (2022)
Record low1° (1991)
Wed, 0451° / 35°0.01
51 °
O'Leary, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.01 in
Chance of precipitation13%
Record high71° (1975)
Record low-14° (1991)
Thu, 0551° / 35°0.05
51 °
O'Leary, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.05 in
Chance of precipitation20%
Record high72° (2008)
Record low14° (1991)
Fri, 0651° / 35°0.03
51 °
O'Leary, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.03 in
Chance of precipitation10%
Record high71° (2020)
Record low7° (1991)
Sat, 0751° / 34°0.02
51 °
O'Leary, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.02 in
Chance of precipitation10%
Record high73° (2001)
Record low-11° (1991)
Sun, 0851° / 34°0.05
51 °
O'Leary, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.05 in
Chance of precipitation18%
Record high78° (1999)
Record low-5° (1991)
Mon, 0949° / 34°0.15
49 °
O'Leary, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.15 in
Chance of precipitation28%
Record high73° (1999)
Record low15° (2018)
Tue, 1046° / 31°0.08
46 °
O'Leary, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.08 in
Chance of precipitation27%
Record high72° (2012)
Record low11° (2018)
Wed, 1145° / 29°0.07
45 °
O'Leary, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.07 in
Chance of precipitation17%
Record high67° (1964)
Record low4° (1986)
Thu, 1244° / 29°0.05
44 °
O'Leary, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.05 in
Chance of precipitation22%
Record high67° (1999)
Record low6° (2019)
Fri, 1346° / 30°0.04
46 °
O'Leary, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.04 in
Chance of precipitation22%
Record high73° (1999)
Record low3° (1986)
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 O'Leary, IA 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 O'Leary, IA 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.