Monthly outlook for Big Rock, IA: average high 63°, average low 49.9°. That is 3.7° above the climate normal for October. Precipitation is expected on 8 days (about 4.3 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 22 October (74.3°), the coolest 30 October (40.9°).
63°/49.9°
Average high / low
+3.7°
Above normal
8 / 4
Wet days / normal
4.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
67°
57.9°
+5°
31 October – 9 November
56.3°
53°
+1.8°
10 November – 19 November
at normal
47.8°
—
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).
Thu, 2274° / 48°0
74 °
Big Rock, Thursday, 22 October
Partly cloudy. High 74°, low 48°.
Pressure30.27 inHg
Wind3.1 mph SE
Humidity59%
Visibility6.2 mi
Dew point54°
Fri, 2372° / 54°0
72 °
Big Rock, Friday, 23 October
Partly cloudy. High 72°, low 54°.
Pressure30.30 inHg
Wind6.6 mph SE
Humidity60%
Visibility6.2 mi
Dew point54°
Sat, 2470° / 53°0
70 °
Big Rock, Saturday, 24 October
Overcast. High 70°, low 53°.
Pressure30.33 inHg
Wind9.4 mph S
Humidity57%
Visibility6.2 mi
Dew point50°
Sun, 2572° / 52°0
72 °
Big Rock, Sunday, 25 October
Overcast. High 72°, low 52°.
Pressure30.33 inHg
Wind5.4 mph S
Humidity59%
Visibility6.2 mi
Dew point52°
Mon, 2670° / 54°0
70 °
Big Rock, Monday, 26 October
Light rain. High 70°, low 54°.
Pressure30.18 inHg
Wind13.4 mph S
Humidity53%
Visibility—
Dew point49°
Tue, 2757° / 50°0.14
57 °
Big Rock, Tuesday, 27 October
Light rain. High 57°, low 50°.
Pressure30.30 inHg
Wind11.2 mph E
Humidity69%
Visibility—
Dew point46°
Wed, 2866° / 53°0.01
66 °
Big Rock, Wednesday, 28 October
Light rain. High 66°, low 53°.
Pressure30.03 inHg
Wind14.4 mph SW
Humidity62%
Visibility—
Dew point51°
Thu, 2960° / 44°0.07
60 °
Big Rock, Thursday, 29 October
Light rain. High 60°, low 44°.
Pressure30.27 inHg
Wind12.9 mph N
Humidity47%
Visibility—
Dew point31°
Fri, 3056° / 41°0
56 °
Big Rock, Friday, 30 October
Overcast. High 56°, low 41°.
Pressure30.27 inHg
Wind13.8 mph SE
Humidity46%
Visibility—
Dew point32°
Sat, 3161° / 50°1.65
61 °
Big Rock, Saturday, 31 October
Rain. High 61°, low 50°.
Pressure29.77 inHg
Wind21.1 mph SE
Humidity90%
Visibility—
Dew point55°
Sun, 0161° / 57°0.95
61 °
Big Rock, Sunday, 1 November
Rain. High 61°, low 57°.
Pressure29.80 inHg
Wind18.7 mph S
Humidity97%
Visibility—
Dew point56°
Mon, 0256° / 50°0.23
56 °
Big Rock, Monday, 2 November
Light rain. High 56°, low 50°.
Pressure29.91 inHg
Wind16.9 mph N
Humidity93%
Visibility—
Dew point51°
Tue, 0352° / 50°0.39
52 °
Big Rock, Tuesday, 3 November
Rain. High 52°, low 50°.
Pressure29.80 inHg
Wind19.6 mph N
Humidity90%
Visibility—
Dew point49°
Wed, 0456° / 50°0.64
56 °
Big Rock, Wednesday, 4 November
Rain. High 56°, low 50°.
Pressure29.41 inHg
Wind17.9 mph N
Humidity96%
Visibility—
Dew point53°
Thu, 0553° / 48°0.23
53 °
Big Rock, Thursday, 5 November
Light rain. High 53°, low 48°.
Pressure29.47 inHg
Wind12.7 mph SW
Humidity93%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 1547° / 34°0.07
47 °
Big Rock, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation28%
Record high69° (2001)
Record low16° (1972)
Mon, 1648° / 33°0.06
48 °
Big Rock, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (1971)
Record low16° (1997)
Tue, 1749° / 34°0.13
49 °
Big Rock, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.13 in
Chance of precipitation27%
Record high73° (2016)
Record low13° (2005)
Wed, 1848° / 34°0.07
48 °
Big Rock, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.07 in
Chance of precipitation27%
Record high70° (1999)
Record low10° (2014)
Thu, 1948° / 33°0.06
48 °
Big Rock, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (2020)
Record low16° (2022)
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.