Monthly outlook for Big Rock, IA: average high 62°, average low 47.1°. That is 1.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 22 October (70.4°), the coolest 17 October (35.2°).
62°/47.1°
Average high / low
+1.9°
Above normal
3 / 4
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
63.5°
59.8°
+2.1°
26 October – 4 November
59.6°
55.4°
+2.3°
5 November – 14 November
at normal
49.8°
—
October records over 66 years
89.1°6 October 1963All-time high
17.4°30 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Plainview (7 mi).
Sat, 1755° / 35°0
55 °
Big Rock, Saturday, 17 October
Clear. High 55°, low 35°.
Pressure30.56 inHg
Wind7.2 mph SW
Humidity44%
Visibility6.2 mi
Dew point31°
Sun, 1862° / 42°0
62 °
Big Rock, Sunday, 18 October
Clear. High 62°, low 42°.
Pressure30.42 inHg
Wind12.9 mph S
Humidity47%
Visibility6.2 mi
Dew point38°
Mon, 1964° / 42°0
64 °
Big Rock, Monday, 19 October
Overcast. High 64°, low 42°.
Pressure30.36 inHg
Wind4.9 mph S
Humidity54%
Visibility6.2 mi
Dew point44°
Tue, 2066° / 43°0
66 °
Big Rock, Tuesday, 20 October
Overcast. High 66°, low 43°.
Pressure30.33 inHg
Wind6.8 mph SE
Humidity44%
Visibility—
Dew point40°
Wed, 2167° / 50°0
67 °
Big Rock, Wednesday, 21 October
Overcast. High 67°, low 50°.
Pressure30.27 inHg
Wind6.8 mph S
Humidity51%
Visibility—
Dew point46°
Thu, 2270° / 54°0.03
70 °
Big Rock, Thursday, 22 October
Light rain. High 70°, low 54°.
Pressure30.12 inHg
Wind8.3 mph SW
Humidity62%
Visibility—
Dew point52°
Fri, 2363° / 47°0
63 °
Big Rock, Friday, 23 October
Clear. High 63°, low 47°.
Pressure30.24 inHg
Wind11.7 mph E
Humidity64%
Visibility—
Dew point47°
Sat, 2466° / 47°0
66 °
Big Rock, Saturday, 24 October
Overcast. High 66°, low 47°.
Pressure30.21 inHg
Wind12.2 mph SE
Humidity58%
Visibility—
Dew point46°
Sun, 2568° / 54°0
68 °
Big Rock, Sunday, 25 October
Overcast. High 68°, low 54°.
Pressure30.15 inHg
Wind9.7 mph S
Humidity50%
Visibility—
Dew point45°
Mon, 2666° / 52°0.01
66 °
Big Rock, Monday, 26 October
Light rain. High 66°, low 52°.
Pressure30.06 inHg
Wind13.2 mph S
Humidity47%
Visibility—
Dew point44°
Tue, 2753° / 41°0
53 °
Big Rock, Tuesday, 27 October
Overcast. High 53°, low 41°.
Pressure30.24 inHg
Wind9 mph W
Humidity59%
Visibility—
Dew point36°
Wed, 2859° / 46°0.32
59 °
Big Rock, Wednesday, 28 October
Rain. High 59°, low 46°.
Pressure30.09 inHg
Wind13.8 mph SE
Humidity85%
Visibility—
Dew point49°
Thu, 2967° / 59°0.28
67 °
Big Rock, Thursday, 29 October
Rain. High 67°, low 59°.
Pressure29.91 inHg
Wind13.6 mph SW
Humidity76%
Visibility—
Dew point58°
Fri, 3060° / 50°0
60 °
Big Rock, Friday, 30 October
Overcast. High 60°, low 50°.
Pressure30.12 inHg
Wind10.2 mph NE
Humidity63%
Visibility—
Dew point45°
Sat, 3151° / 49°0.75
51 °
Big Rock, Saturday, 31 October
Rain. High 51°, low 49°.
Pressure30.15 inHg
Wind19.7 mph E
Humidity92%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0155° / 40°0.17
55 °
Big Rock, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.17 in
Chance of precipitation35%
Record high76° (2000)
Record low22° (2023)
Mon, 0254° / 39°0.1
54 °
Big Rock, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.1 in
Chance of precipitation33%
Record high72° (2022)
Record low19° (1991)
Tue, 0353° / 38°0.06
53 °
Big Rock, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.06 in
Chance of precipitation22%
Record high72° (1987)
Record low14° (1991)
Wed, 0453° / 40°0.09
53 °
Big Rock, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.09 in
Chance of precipitation20%
Record high72° (2022)
Record low12° (1991)
Thu, 0552° / 38°0.1
52 °
Big Rock, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation22%
Record high72° (1978)
Record low19° (1991)
Fri, 0652° / 37°0.07
52 °
Big Rock, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high70° (2020)
Record low20° (1991)
Sat, 0752° / 36°0.02
52 °
Big Rock, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.02 in
Chance of precipitation15%
Record high70° (1966)
Record low11° (1991)
Sun, 0852° / 37°0.04
52 °
Big Rock, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.04 in
Chance of precipitation20%
Record high76° (1999)
Record low10° (1991)
Mon, 0951° / 37°0.1
51 °
Big Rock, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation35%
Record high74° (1999)
Record low16° (1991)
Tue, 1050° / 35°0.09
50 °
Big Rock, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation28%
Record high73° (2022)
Record low15° (2018)
Wed, 1148° / 33°0.06
48 °
Big Rock, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation23%
Record high72° (1964)
Record low13° (2019)
Thu, 1246° / 32°0.06
46 °
Big Rock, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (1964)
Record low6° (2019)
Fri, 1347° / 32°0.05
47 °
Big Rock, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.05 in
Chance of precipitation27%
Record high73° (1999)
Record low6° (1986)
Sat, 1448° / 33°0.05
48 °
Big Rock, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.05 in
Chance of precipitation28%
Record high70° (2025)
Record low14° (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 Big Rock, 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 Big Rock, 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.