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As of 01:20 CDT

Weather in Siam, IA

75°Current weather

Siam, Sunday, 9 August, 01:20

Overcast. Feels like 77°. High 94°, low 75°.

Pressure29.91 inHg
Wind16.3 mph S
Humidity88%
Visibility6.2 mi
Dew point72°

Two-week outlook for Siam, IA: week one averages a high of 85.6° and week two 82.4°, so week two runs 3.2° cooler than week one. Around 1.8 inches of precipitation are expected over the 14 days, across 6 wet days. The nearest weekend, August 9: 94°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)85.6°70.2°1.6 in / 4 d—
2nd (August 16 – August 22)82.4°62.9°0.2 in / 2 d—

Weekend weather

Sun, August 9
Light rain
94°75°
0.02 in
Sat, August 15
Rain
70°65°
0.26 in
Sun, August 16
Overcast
81°64°
no precip.
Sat, August 22
Light rain
89°60°
0.01 in
Mon, 1091° / 73°0Overcast
91 °Overcast

Siam, Monday, 10 August

Overcast. High 91°, low 73°.

Pressure29.85 inHg
Wind6 mph SE
Humidity38%
Visibility6.2 mi
Dew point61°
Tue, 11105° / 79°0.02Light rain
105 °Light rain

Siam, Tuesday, 11 August

Light rain. High 105°, low 79°.

Pressure29.71 inHg
Wind11.7 mph SW
Humidity26%
Visibility6.2 mi
Dew point59°
Wed, 1290° / 70°0.34Heavy rain
90 °Heavy rain

Siam, Wednesday, 12 August

Heavy rain. High 90°, low 70°.

Pressure29.85 inHg
Wind10.6 mph E
Humidity51%
Visibility6.2 mi
Dew point67°
Thu, 1372° / 67°0.66Rain
72 °Rain

Siam, Thursday, 13 August

Rain. High 72°, low 67°.

Pressure29.88 inHg
Wind18.8 mph E
Humidity98%
Visibility—
Dew point69°
Fri, 1476° / 63°0.32Rain
76 °Rain

Siam, Friday, 14 August

Rain. High 76°, low 63°.

Pressure30.06 inHg
Wind15.9 mph E
Humidity89%
Visibility—
Dew point67°
Sat, 1570° / 65°0.26Rain
70 °Rain

Siam, Saturday, 15 August

Rain. High 70°, low 65°.

Pressure30.12 inHg
Wind10.9 mph E
Humidity96%
Visibility—
Dew point68°
Sun, 1681° / 64°0Overcast
81 °Overcast

Siam, Sunday, 16 August

Overcast. High 81°, low 64°.

Pressure30.09 inHg
Wind7.9 mph E
Humidity73%
Visibility—
Dew point65°
Mon, 1784° / 68°0.05Light rain
84 °Light rain

Siam, Monday, 17 August

Light rain. High 84°, low 68°.

Pressure30.03 inHg
Wind7.7 mph SE
Humidity62%
Visibility—
Dew point67°
Tue, 1893° / 70°0.13Light rain
93 °Light rain

Siam, Tuesday, 18 August

Light rain. High 93°, low 70°.

Pressure29.97 inHg
Wind7.2 mph SE
Humidity57%
Visibility—
Dew point69°
Wed, 1982° / 66°0Overcast
82 °Overcast

Siam, Wednesday, 19 August

Overcast. High 82°, low 66°.

Pressure30.00 inHg
Wind16.1 mph NE
Humidity50%
Visibility—
Dew point56°
Thu, 2076° / 58°0Overcast
76 °Overcast

Siam, Thursday, 20 August

Overcast. High 76°, low 58°.

Pressure30.06 inHg
Wind17 mph NE
Humidity42%
Visibility—
Dew point49°
Fri, 2172° / 55°0Overcast
72 °Overcast

Siam, Friday, 21 August

Overcast. High 72°, low 55°.

Pressure30.03 inHg
Wind16.4 mph E
Humidity50%
Visibility—
Dew point49°
Sat, 2289° / 60°0.01Light rain
89 °Light rain

Siam, Saturday, 22 August

Light rain. High 89°, low 60°.

Pressure29.85 inHg
Wind9.3 mph NW
Humidity48%
Visibility—
Dew point61°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Siam, IA, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.