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As of 19:11 CDT

Weather in Big Rock, IA

80°Current weather

Big Rock, Saturday, 8 August, 19:11

Clear. Feels like 83°. High 82°, low 66°.

Pressure30.00 inHg
Wind3.2 mph S
Humidity72%
Visibility6.2 mi
Dew point69°
Sun, 0991° / 64°0.01Light rain
91 °Light rain

Big Rock, Sunday, 9 August

Light rain. High 91°, low 64°.

Pressure29.85 inHg
Wind11.3 mph SE
Humidity74%
Visibility6.2 mi
Dew point73°
Mon, 1086° / 72°0.01Light rain
86 °Light rain

Big Rock, Monday, 10 August

Light rain. High 86°, low 72°.

Pressure29.85 inHg
Wind6 mph S
Humidity74%
Visibility6.2 mi
Dew point72°
Tue, 1191° / 73°0Overcast
91 °Overcast

Big Rock, Tuesday, 11 August

Overcast. High 91°, low 73°.

Pressure29.77 inHg
Wind13 mph SW
Humidity65%
Visibility6.2 mi
Dew point72°
Wed, 1282° / 70°0.09Light rain
82 °Light rain

Big Rock, Wednesday, 12 August

Light rain. High 82°, low 70°.

Pressure29.88 inHg
Wind5 mph SE
Humidity86%
Visibility6.2 mi
Dew point70°
Thu, 1374° / 63°0.05Light rain
74 °Light rain

Big Rock, Thursday, 13 August

Light rain. High 74°, low 63°.

Pressure29.94 inHg
Wind11.6 mph NE
Humidity71%
Visibility—
Dew point63°
Fri, 1476° / 59°0Clear
76 °Clear

Big Rock, Friday, 14 August

Clear. High 76°, low 59°.

Pressure30.18 inHg
Wind6.6 mph E
Humidity55%
Visibility—
Dew point55°
Sat, 1576° / 56°0Overcast
76 °Overcast

Big Rock, Saturday, 15 August

Overcast. High 76°, low 56°.

Pressure30.27 inHg
Wind8.6 mph S
Humidity57%
Visibility—
Dew point56°
Sun, 1678° / 59°0Overcast
78 °Overcast

Big Rock, Sunday, 16 August

Overcast. High 78°, low 59°.

Pressure30.12 inHg
Wind12 mph S
Humidity62%
Visibility—
Dew point60°
Mon, 1787° / 68°0.01Light rain
87 °Light rain

Big Rock, Monday, 17 August

Light rain. High 87°, low 68°.

Pressure29.94 inHg
Wind7.8 mph N
Humidity71%
Visibility—
Dew point71°
Tue, 1886° / 69°0Overcast
86 °Overcast

Big Rock, Tuesday, 18 August

Overcast. High 86°, low 69°.

Pressure30.00 inHg
Wind10.1 mph SE
Humidity64%
Visibility—
Dew point68°
Wed, 1988° / 69°0.17Light rain
88 °Light rain

Big Rock, Wednesday, 19 August

Light rain. High 88°, low 69°.

Pressure29.88 inHg
Wind9.5 mph SW
Humidity64%
Visibility—
Dew point70°
Thu, 2080° / 65°0.11Light rain
80 °Light rain

Big Rock, Thursday, 20 August

Light rain. High 80°, low 65°.

Pressure29.94 inHg
Wind10.4 mph NE
Humidity71%
Visibility—
Dew point65°
Fri, 2183° / 63°0Clear
83 °Clear

Big Rock, Friday, 21 August

Clear. High 83°, low 63°.

Pressure29.97 inHg
Wind6 mph S
Humidity54%
Visibility—
Dew point61°
Sat, 2277° / 58°0.03Light rain
77 °Light rain

Big Rock, Saturday, 22 August

Light rain. High 77°, low 58°.

Pressure29.94 inHg
Wind16.1 mph NE
Humidity70%
Visibility—
Dew point65°
Sun, 2370° / 45°0Mostly clear
70 °Mostly clear

Big Rock, Sunday, 23 August

Mostly clear. High 70°, low 45°.

Pressure30.24 inHg
Wind12.1 mph E
Humidity46%
Visibility—
Dew point43°

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.