Monthly outlook for Olaf, IA: average high 62.5°, average low 46.1°. That is 1.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 10 October (80.7°), the coolest 18 October (34.5°).
62.5°/46.1°
Average high / low
+1.5°
Above normal
4 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
67.6°
61.1°
+3.6°
17 October – 26 October
54.2°
57°
-1.6°
27 October – 5 November
at normal
52.1°
—
October records over 66 years
86.7°1 October 2023All-time high
16.9°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Meservey (13 mi).
Thu, 0871° / 48°0
71 °
Olaf, Thursday, 8 October
Overcast. High 71°, low 48°.
Pressure30.15 inHg
Wind1.3 mph E
Humidity45%
Visibility6.2 mi
Dew point42°
Fri, 0978° / 54°0.06
78 °
Olaf, Friday, 9 October
Light rain. High 78°, low 54°.
Pressure29.97 inHg
Wind13.2 mph SE
Humidity60%
Visibility6.2 mi
Dew point54°
Sat, 1081° / 66°0
81 °
Olaf, Saturday, 10 October
Clear. High 81°, low 66°.
Pressure29.85 inHg
Wind17.3 mph S
Humidity50%
Visibility6.2 mi
Dew point58°
Sun, 1178° / 61°0
78 °
Olaf, Sunday, 11 October
Clear. High 78°, low 61°.
Pressure29.80 inHg
Wind15.5 mph S
Humidity43%
Visibility—
Dew point50°
Mon, 1265° / 46°0
65 °
Olaf, Monday, 12 October
Overcast. High 65°, low 46°.
Pressure29.88 inHg
Wind16.1 mph N
Humidity61%
Visibility—
Dew point46°
Tue, 1355° / 46°0
55 °
Olaf, Tuesday, 13 October
Overcast. High 55°, low 46°.
Pressure30.15 inHg
Wind12.9 mph N
Humidity64%
Visibility—
Dew point38°
Wed, 1460° / 46°1.43
60 °
Olaf, Wednesday, 14 October
Heavy rain. High 60°, low 46°.
Pressure29.88 inHg
Wind21.5 mph SE
Humidity96%
Visibility—
Dew point46°
Thu, 1565° / 45°0.08
65 °
Olaf, Thursday, 15 October
Light rain. High 65°, low 45°.
Pressure29.74 inHg
Wind19.2 mph NW
Humidity83%
Visibility—
Dew point49°
Fri, 1647° / 39°0
47 °
Olaf, Friday, 16 October
Partly cloudy. High 47°, low 39°.
Pressure30.18 inHg
Wind17.7 mph NW
Humidity48%
Visibility—
Dew point27°
Sat, 1746° / 35°0
46 °
Olaf, Saturday, 17 October
Overcast. High 46°, low 35°.
Pressure30.39 inHg
Wind14.3 mph N
Humidity48%
Visibility—
Dew point25°
Sun, 1856° / 35°0
56 °
Olaf, Sunday, 18 October
Partly cloudy. High 56°, low 35°.
Pressure30.18 inHg
Wind13.2 mph W
Humidity38%
Visibility—
Dew point25°
Mon, 1958° / 43°0
58 °
Olaf, Monday, 19 October
Overcast. High 58°, low 43°.
Pressure30.15 inHg
Wind8.6 mph SE
Humidity47%
Visibility—
Dew point35°
Tue, 2059° / 45°0
59 °
Olaf, Tuesday, 20 October
Overcast. High 59°, low 45°.
Pressure30.42 inHg
Wind12.6 mph SE
Humidity42%
Visibility—
Dew point33°
Wed, 2149° / 43°0.15
49 °
Olaf, Wednesday, 21 October
Light rain. High 49°, low 43°.
Pressure30.30 inHg
Wind14 mph NW
Humidity81%
Visibility—
Dew point44°
Thu, 2256° / 37°0
56 °
Olaf, Thursday, 22 October
Clear. High 56°, low 37°.
Pressure30.15 inHg
Wind11.6 mph W
Humidity39%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2357° / 42°0.12
57 °
Olaf, Friday, 23 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.12 in
Chance of precipitation43%
Record high78° (1963)
Record low22° (1981)
Sat, 2456° / 40°0.13
56 °
Olaf, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.13 in
Chance of precipitation37%
Record high74° (1989)
Record low20° (2020)
Sun, 2555° / 40°0.04
55 °
Olaf, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.04 in
Chance of precipitation20%
Record high76° (1989)
Record low26° (2020)
Mon, 2655° / 39°0.05
55 °
Olaf, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.05 in
Chance of precipitation17%
Record high74° (1989)
Record low21° (2020)
Tue, 2755° / 39°0.08
55 °
Olaf, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.08 in
Chance of precipitation23%
Record high73° (1966)
Record low17° (2020)
Wed, 2853° / 38°0.06
53 °
Olaf, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.06 in
Chance of precipitation25%
Record high76° (2016)
Record low20° (1967)
Thu, 2954° / 38°0.08
54 °
Olaf, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.08 in
Chance of precipitation27%
Record high80° (2024)
Record low22° (1988)
Fri, 3054° / 39°0.08
54 °
Olaf, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.08 in
Chance of precipitation27%
Record high74° (2024)
Record low21° (1988)
Sat, 3153° / 38°0.1
53 °
Olaf, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.1 in
Chance of precipitation28%
Record high74° (1968)
Record low20° (1993)
Sun, 0152° / 37°0.11
52 °
Olaf, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.11 in
Chance of precipitation25%
Record high71° (2022)
Record low21° (2002)
Mon, 0251° / 36°0.04
51 °
Olaf, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.04 in
Chance of precipitation15%
Record high72° (2022)
Record low14° (1991)
Tue, 0350° / 36°0.06
50 °
Olaf, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high71° (2008)
Record low11° (1991)
Wed, 0450° / 35°0.05
50 °
Olaf, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.05 in
Chance of precipitation22%
Record high70° (2008)
Record low5° (1991)
Thu, 0550° / 35°0.07
50 °
Olaf, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.07 in
Chance of precipitation23%
Record high70° (2015)
Record low18° (1967)
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 Olaf, 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 Olaf, 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.