Monthly outlook for Olaf, IA: average high 63.9°, average low 47.8°. That is 2.5° above the climate normal for October. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 10 October (81.3°), the coolest 21 October (36°).
63.9°/47.8°
Average high / low
+2.5°
Above normal
6 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
68.4°
60.7°
+4.3°
18 October – 27 October
56.5°
56.6°
-0°
28 October – 6 November
at normal
51.6°
—
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).
Fri, 0978° / 52°0.44
78 °
Olaf, Friday, 9 October
Heavy rain. High 78°, low 52°.
Pressure29.97 inHg
Wind10.9 mph SE
Humidity67%
Visibility6.2 mi
Dew point57°
Sat, 1081° / 65°0
81 °
Olaf, Saturday, 10 October
Clear. High 81°, low 65°.
Pressure29.91 inHg
Wind16.2 mph S
Humidity52%
Visibility6.2 mi
Dew point58°
Sun, 1178° / 62°0
78 °
Olaf, Sunday, 11 October
Partly cloudy. High 78°, low 62°.
Pressure29.88 inHg
Wind12.5 mph S
Humidity49%
Visibility6.2 mi
Dew point54°
Mon, 1271° / 53°0
71 °
Olaf, Monday, 12 October
Clear. High 71°, low 53°.
Pressure29.74 inHg
Wind16.4 mph NW
Humidity66%
Visibility—
Dew point57°
Tue, 1355° / 45°0
55 °
Olaf, Tuesday, 13 October
Overcast. High 55°, low 45°.
Pressure30.18 inHg
Wind17.4 mph NW
Humidity53%
Visibility—
Dew point34°
Wed, 1465° / 44°0.09
65 °
Olaf, Wednesday, 14 October
Light rain. High 65°, low 44°.
Pressure29.88 inHg
Wind21.6 mph S
Humidity78%
Visibility—
Dew point46°
Thu, 1577° / 65°0.35
77 °
Olaf, Thursday, 15 October
Rain. High 77°, low 65°.
Pressure29.62 inHg
Wind20.5 mph S
Humidity72%
Visibility—
Dew point66°
Fri, 1660° / 40°0.09
60 °
Olaf, Friday, 16 October
Light rain. High 60°, low 40°.
Pressure29.97 inHg
Wind14.2 mph NW
Humidity87%
Visibility—
Dew point45°
Sat, 1746° / 39°0.02
46 °
Olaf, Saturday, 17 October
Light rain. High 46°, low 39°.
Pressure30.18 inHg
Wind14 mph W
Humidity85%
Visibility—
Dew point38°
Sun, 1856° / 38°0
56 °
Olaf, Sunday, 18 October
Clear. High 56°, low 38°.
Pressure30.27 inHg
Wind9.1 mph W
Humidity47%
Visibility—
Dew point31°
Mon, 1966° / 42°0
66 °
Olaf, Monday, 19 October
Clear. High 66°, low 42°.
Pressure30.12 inHg
Wind11.4 mph SW
Humidity41%
Visibility—
Dew point36°
Tue, 2053° / 43°0
53 °
Olaf, Tuesday, 20 October
Overcast. High 53°, low 43°.
Pressure30.30 inHg
Wind12.3 mph N
Humidity48%
Visibility—
Dew point33°
Wed, 2155° / 36°0
55 °
Olaf, Wednesday, 21 October
Clear. High 55°, low 36°.
Pressure30.15 inHg
Wind16.1 mph S
Humidity45%
Visibility—
Dew point30°
Thu, 2258° / 49°0.19
58 °
Olaf, Thursday, 22 October
Light rain. High 58°, low 49°.
Pressure29.53 inHg
Wind21.1 mph S
Humidity56%
Visibility—
Dew point41°
Fri, 2351° / 44°0.1
51 °
Olaf, Friday, 23 October
Light rain. High 51°, low 44°.
Pressure29.77 inHg
Wind14.4 mph NW
Humidity45%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 0649° / 35°0.07
49 °
Olaf, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation22%
Record high70° (2020)
Record low6° (1991)
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.