Monthly outlook for Onawa, IA: average high 67.7°, average low 50.7°. That is 3.7° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 12 October (91.6°), the coolest 17 October (40.1°).
67.7°/50.7°
Average high / low
+3.7°
Above normal
3 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
70°
62.3°
+4.2°
22 October – 31 October
64.1°
58°
+3.4°
1 November – 10 November
at normal
52.4°
—
October records over 66 years
90°1 October 2023All-time high
11.1°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Turin (6 mi).
Tue, 1373° / 54°0
73 °
Onawa, Tuesday, 13 October
Mostly clear. High 73°, low 54°.
Pressure29.97 inHg
Wind10.1 mph N
Humidity59%
Visibility6.2 mi
Dew point48°
Wed, 1464° / 49°0
64 °
Onawa, Wednesday, 14 October
Overcast. High 64°, low 49°.
Pressure30.21 inHg
Wind7.4 mph NE
Humidity54%
Visibility6.2 mi
Dew point43°
Thu, 1565° / 55°0.02
65 °
Onawa, Thursday, 15 October
Light rain. High 65°, low 55°.
Pressure30.18 inHg
Wind8.7 mph N
Humidity72%
Visibility6.2 mi
Dew point50°
Fri, 1658° / 46°0
58 °
Onawa, Friday, 16 October
Clear. High 58°, low 46°.
Pressure30.68 inHg
Wind15.8 mph N
Humidity43%
Visibility—
Dew point32°
Sat, 1761° / 40°0
61 °
Onawa, Saturday, 17 October
Overcast. High 61°, low 40°.
Pressure30.30 inHg
Wind15 mph S
Humidity38%
Visibility—
Dew point31°
Sun, 1866° / 44°0
66 °
Onawa, Sunday, 18 October
Clear. High 66°, low 44°.
Pressure30.03 inHg
Wind17.9 mph S
Humidity40%
Visibility—
Dew point35°
Mon, 1968° / 49°0
68 °
Onawa, Monday, 19 October
Overcast. High 68°, low 49°.
Pressure30.03 inHg
Wind11.1 mph S
Humidity55%
Visibility—
Dew point46°
Tue, 2074° / 54°0
74 °
Onawa, Tuesday, 20 October
Clear. High 74°, low 54°.
Pressure30.06 inHg
Wind14.1 mph S
Humidity60%
Visibility—
Dew point54°
Wed, 2179° / 60°0
79 °
Onawa, Wednesday, 21 October
Partly cloudy. High 79°, low 60°.
Pressure30.06 inHg
Wind18.4 mph S
Humidity54%
Visibility—
Dew point56°
Thu, 2272° / 64°0.44
72 °
Onawa, Thursday, 22 October
Rain. High 72°, low 64°.
Pressure30.06 inHg
Wind14.9 mph S
Humidity69%
Visibility—
Dew point60°
Fri, 2364° / 51°0.01
64 °
Onawa, Friday, 23 October
Light rain. High 64°, low 51°.
Pressure30.42 inHg
Wind10.9 mph N
Humidity37%
Visibility—
Dew point36°
Sat, 2460° / 48°0.69
60 °
Onawa, Saturday, 24 October
Rain. High 60°, low 48°.
Pressure30.12 inHg
Wind21.5 mph S
Humidity75%
Visibility—
Dew point46°
Sun, 2562° / 49°0.15
62 °
Onawa, Sunday, 25 October
Rain. High 62°, low 49°.
Pressure29.91 inHg
Wind24.4 mph S
Humidity84%
Visibility—
Dew point51°
Mon, 2660° / 41°0
60 °
Onawa, Monday, 26 October
Clear. High 60°, low 41°.
Pressure30.21 inHg
Wind6.9 mph NW
Humidity45%
Visibility—
Dew point34°
Tue, 2765° / 43°0
65 °
Onawa, Tuesday, 27 October
Clear. High 65°, low 43°.
Pressure30.06 inHg
Wind12.3 mph S
Humidity40%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2856° / 40°0.05
56 °
Onawa, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.05 in
Chance of precipitation12%
Record high79° (2016)
Record low22° (1967)
Thu, 2958° / 40°0.07
58 °
Onawa, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high58°
Average low40°
Average precipitation0.07 in
Chance of precipitation18%
Record high81° (2024)
Record low21° (1980)
Fri, 3056° / 40°0.1
56 °
Onawa, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.1 in
Chance of precipitation28%
Record high76° (2024)
Record low20° (1991)
Sat, 3155° / 38°0.09
55 °
Onawa, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.09 in
Chance of precipitation27%
Record high76° (1968)
Record low19° (1993)
Sun, 0154° / 39°0.09
54 °
Onawa, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.09 in
Chance of precipitation27%
Record high77° (1990)
Record low20° (2002)
Mon, 0253° / 38°0.05
53 °
Onawa, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.05 in
Chance of precipitation25%
Record high75° (2005)
Record low9° (1991)
Tue, 0354° / 37°0.06
54 °
Onawa, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.06 in
Chance of precipitation20%
Record high75° (2022)
Record low2° (1991)
Wed, 0453° / 36°0.02
53 °
Onawa, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.02 in
Chance of precipitation8%
Record high70° (1978)
Record low-14° (1991)
Thu, 0553° / 37°0.04
53 °
Onawa, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.04 in
Chance of precipitation15%
Record high73° (2008)
Record low17° (1991)
Fri, 0653° / 36°0.03
53 °
Onawa, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.03 in
Chance of precipitation12%
Record high73° (1980)
Record low10° (1991)
Sat, 0753° / 36°0.02
53 °
Onawa, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.02 in
Chance of precipitation10%
Record high74° (2001)
Record low-11° (1991)
Sun, 0852° / 36°0.05
52 °
Onawa, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.05 in
Chance of precipitation18%
Record high78° (1999)
Record low-4° (1991)
Mon, 0951° / 35°0.14
51 °
Onawa, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.14 in
Chance of precipitation28%
Record high74° (1999)
Record low16° (2018)
Tue, 1048° / 33°0.09
48 °
Onawa, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.09 in
Chance of precipitation27%
Record high75° (2012)
Record low12° (2018)
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 Onawa, 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 Onawa, 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.