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As of 14:26 CDT

Weather in Coster, IA

80°Current weather

Coster, Saturday, 8 August, 14:26

Clear. Feels like 80°. High 80°, low 58°.

Pressure30.06 inHg
Wind0.4 mph SE
Humidity64%
Visibility6.2 mi
Dew point66°
Sun, 0985° / 66°0.25Rain
85 °Rain

Coster, Sunday, 9 August

Rain. High 85°, low 66°.

Pressure29.80 inHg
Wind9.1 mph SE
Humidity75%
Visibility6.2 mi
Dew point72°
Mon, 1084° / 71°0Overcast
84 °Overcast

Coster, Monday, 10 August

Overcast. High 84°, low 71°.

Pressure29.83 inHg
Wind8.1 mph E
Humidity81%
Visibility6.2 mi
Dew point73°
Tue, 1187° / 69°0Partly cloudy
87 °Partly cloudy

Coster, Tuesday, 11 August

Partly cloudy. High 87°, low 69°.

Pressure29.77 inHg
Wind2.5 mph E
Humidity67%
Visibility6.2 mi
Dew point72°
Wed, 1285° / 70°0Partly cloudy
85 °Partly cloudy

Coster, Wednesday, 12 August

Partly cloudy. High 85°, low 70°.

Pressure29.85 inHg
Wind5.9 mph SE
Humidity66%
Visibility6.2 mi
Dew point69°
Thu, 1376° / 62°0.29Rain
76 °Rain

Coster, Thursday, 13 August

Rain. High 76°, low 62°.

Pressure29.97 inHg
Wind11.6 mph NE
Humidity58%
Visibility—
Dew point59°
Fri, 1477° / 55°0Clear
77 °Clear

Coster, Friday, 14 August

Clear. High 77°, low 55°.

Pressure30.21 inHg
Wind7.5 mph SE
Humidity51%
Visibility—
Dew point53°
Sat, 1577° / 57°0Overcast
77 °Overcast

Coster, Saturday, 15 August

Overcast. High 77°, low 57°.

Pressure30.24 inHg
Wind12.3 mph S
Humidity59%
Visibility—
Dew point58°
Sun, 1680° / 65°0Overcast
80 °Overcast

Coster, Sunday, 16 August

Overcast. High 80°, low 65°.

Pressure30.09 inHg
Wind10.9 mph S
Humidity72%
Visibility—
Dew point65°
Mon, 1782° / 70°0.03Light rain
82 °Light rain

Coster, Monday, 17 August

Light rain. High 82°, low 70°.

Pressure29.97 inHg
Wind10.2 mph NW
Humidity75%
Visibility—
Dew point71°
Tue, 1886° / 68°0.01Light rain
86 °Light rain

Coster, Tuesday, 18 August

Light rain. High 86°, low 68°.

Pressure30.00 inHg
Wind9.2 mph SE
Humidity62%
Visibility—
Dew point67°
Wed, 1984° / 67°0.21Light rain
84 °Light rain

Coster, Wednesday, 19 August

Light rain. High 84°, low 67°.

Pressure29.88 inHg
Wind12.6 mph N
Humidity67%
Visibility—
Dew point70°
Thu, 2081° / 63°0.01Light rain
81 °Light rain

Coster, Thursday, 20 August

Light rain. High 81°, low 63°.

Pressure29.97 inHg
Wind9.9 mph NE
Humidity58%
Visibility—
Dew point61°
Fri, 2185° / 64°0Clear
85 °Clear

Coster, Friday, 21 August

Clear. High 85°, low 64°.

Pressure29.97 inHg
Wind8.7 mph S
Humidity50%
Visibility—
Dew point59°
Sat, 2270° / 56°0.12Light rain
70 °Light rain

Coster, Saturday, 22 August

Light rain. High 70°, low 56°.

Pressure30.03 inHg
Wind15.6 mph NE
Humidity73%
Visibility—
Dew point58°
Sun, 2369° / 45°0Clear
69 °Clear

Coster, Sunday, 23 August

Clear. High 69°, low 45°.

Pressure30.24 inHg
Wind8.9 mph E
Humidity46%
Visibility—
Dew point42°

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 Coster, 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 Coster, 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.