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As of 11:58 CDT

Weather in St. Marys, IA

87°Current weather

St. Marys, Sunday, 9 August, 11:58

Clear. Feels like 93°. High 97°, low 71°.

Pressure29.83 inHg
Wind15.7 mph SW
Humidity62%
Visibility6.2 mi
Dew point72°

10-day forecast for St. Marys, IA: 61° to 106°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.

106°
Best day: Tuesday, August 11
72° · 1.61 in
Worst day: Thursday, August 13

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1090° / 71°0.02Light rain
MorningOvercast74°feels 75°
AfternoonOvercast89°feels 88°
EveningOvercast85°feels 87°
OvernightLight rain76°feels 78°
90 °Light rain

St. Marys, Monday, 10 August

Light rain. High 90°, low 71°.

Pressure29.85 inHg
Wind4.5 mph E
Humidity48%
Visibility6.2 mi
Dew point65°
Tue, 11106° / 70°0.05Light rain
MorningOvercast75°feels 76°
AfternoonClear103°feels 104°
EveningLight rain80°feels 80°
OvernightClear71°feels 71°
106 °Light rain

St. Marys, Tuesday, 11 August

Light rain. High 106°, low 70°.

Pressure29.74 inHg
Wind13.4 mph SW
Humidity37%
Visibility6.2 mi
Dew point64°
Wed, 1293° / 68°0Mostly clear
MorningClear73°feels 74°
AfternoonOvercast92°feels 95°
EveningOvercast81°feels 84°
OvernightClear70°feels 70°
93 °Mostly clear

St. Marys, Wednesday, 12 August

Mostly clear. High 93°, low 68°.

Pressure29.83 inHg
Wind10.6 mph E
Humidity49%
Visibility6.2 mi
Dew point66°
Thu, 1372° / 67°1.61Heavy rain
MorningLight rain69°feels 71°
AfternoonHeavy rain70°feels 72°
EveningHeavy rain67°feels 68°
OvernightRain71°feels 72°
72 °Heavy rain

St. Marys, Thursday, 13 August

Heavy rain. High 72°, low 67°.

Pressure29.85 inHg
Wind18.2 mph E
Humidity96%
Visibility—
Dew point69°
Fri, 1471° / 64°0.47Rain
MorningRain66°feels 67°
AfternoonRain69°feels 70°
EveningRain69°feels 70°
OvernightRain67°feels 68°
71 °Rain

St. Marys, Friday, 14 August

Rain. High 71°, low 64°.

Pressure30.06 inHg
Wind14 mph E
Humidity91%
Visibility—
Dew point66°
Sat, 1580° / 65°0.07Light rain
MorningLight rain68°feels 69°
AfternoonLight rain73°feels 74°
EveningLight rain77°feels 78°
OvernightLight rain70°feels 71°
80 °Light rain

St. Marys, Saturday, 15 August

Light rain. High 80°, low 65°.

Pressure30.06 inHg
Wind13.7 mph E
Humidity92%
Visibility—
Dew point69°
Sun, 1681° / 65°0.03Light rain
MorningLight rain69°feels 69°
AfternoonLight rain79°feels 79°
EveningLight rain73°feels 73°
OvernightLight rain65°feels 65°
81 °Light rain

St. Marys, Sunday, 16 August

Light rain. High 81°, low 65°.

Pressure30.12 inHg
Wind12.5 mph N
Humidity60%
Visibility—
Dew point63°
Mon, 1780° / 61°0Overcast
MorningOvercast66°feels 66°
AfternoonOvercast79°feels 79°
EveningOvercast72°feels 72°
OvernightOvercast66°feels 66°
80 °Overcast

St. Marys, Monday, 17 August

Overcast. High 80°, low 61°.

Pressure30.09 inHg
Wind7.8 mph S
Humidity54%
Visibility—
Dew point59°
Tue, 1888° / 62°0.02Light rain
MorningLight rain69°feels 70°
AfternoonLight rain84°feels 88°
EveningLight rain82°feels 88°
OvernightLight rain72°feels 73°
88 °Light rain

St. Marys, Tuesday, 18 August

Light rain. High 88°, low 62°.

Pressure29.80 inHg
Wind8.9 mph S
Humidity59%
Visibility—
Dew point65°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in St. Marys, IA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.