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As of 10:14 CDT

Weather in Portsmouth, IA

81°Current weather

Portsmouth, Sunday, 9 August, 10:14

Clear. Feels like 85°. High 97°, low 73°.

Pressure29.80 inHg
Wind13.2 mph SW
Humidity74%
Visibility6.2 mi
Dew point71°

Two-week outlook for Portsmouth, IA: week one averages a high of 87.6° and week two 87.1°, so both weeks look similar in temperature. Around 1.4 inches of precipitation are expected over the 14 days, across 4 wet days. The nearest weekend, August 9: 97°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)87.6°68.3°1.3 in / 3 d—
2nd (August 16 – August 22)87.1°64.2°0.1 in / 1 d—

Weekend weather

Sun, August 9
Light rain
97°73°
no precip.
Sat, August 15
Light rain
79°66°
0.15 in
Sun, August 16
Overcast
83°65°
no precip.
Sat, August 22
Clear
89°67°
no precip.
Mon, 1088° / 69°0.01Light rain
88 °Light rain

Portsmouth, Monday, 10 August

Light rain. High 88°, low 69°.

Pressure29.83 inHg
Wind13 mph E
Humidity55%
Visibility6.2 mi
Dew point66°
Tue, 11107° / 71°0Overcast
107 °Overcast

Portsmouth, Tuesday, 11 August

Overcast. High 107°, low 71°.

Pressure29.71 inHg
Wind10.3 mph SW
Humidity22%
Visibility6.2 mi
Dew point54°
Wed, 1297° / 68°0Overcast
97 °Overcast

Portsmouth, Wednesday, 12 August

Overcast. High 97°, low 68°.

Pressure29.83 inHg
Wind12 mph E
Humidity40%
Visibility6.2 mi
Dew point63°
Thu, 1376° / 66°0.62Rain
76 °Rain

Portsmouth, Thursday, 13 August

Rain. High 76°, low 66°.

Pressure29.85 inHg
Wind17.6 mph E
Humidity86%
Visibility—
Dew point68°
Fri, 1469° / 65°0.51Rain
69 °Rain

Portsmouth, Friday, 14 August

Rain. High 69°, low 65°.

Pressure30.00 inHg
Wind17 mph E
Humidity90%
Visibility—
Dew point65°
Sat, 1579° / 66°0.15Light rain
79 °Light rain

Portsmouth, Saturday, 15 August

Light rain. High 79°, low 66°.

Pressure30.03 inHg
Wind10.6 mph E
Humidity90%
Visibility—
Dew point69°
Sun, 1683° / 65°0Overcast
83 °Overcast

Portsmouth, Sunday, 16 August

Overcast. High 83°, low 65°.

Pressure30.15 inHg
Wind12.1 mph N
Humidity50%
Visibility—
Dew point59°
Mon, 1774° / 62°0Overcast
74 °Overcast

Portsmouth, Monday, 17 August

Overcast. High 74°, low 62°.

Pressure30.09 inHg
Wind10 mph SE
Humidity65%
Visibility—
Dew point58°
Tue, 1890° / 62°0.09Light rain
90 °Light rain

Portsmouth, Tuesday, 18 August

Light rain. High 90°, low 62°.

Pressure29.80 inHg
Wind12.4 mph S
Humidity51%
Visibility—
Dew point62°
Wed, 1985° / 64°0Clear
85 °Clear

Portsmouth, Wednesday, 19 August

Clear. High 85°, low 64°.

Pressure29.97 inHg
Wind12.6 mph N
Humidity41%
Visibility—
Dew point54°
Thu, 2090° / 61°0Partly cloudy
90 °Partly cloudy

Portsmouth, Thursday, 20 August

Partly cloudy. High 90°, low 61°.

Pressure29.94 inHg
Wind11.9 mph SE
Humidity37%
Visibility—
Dew point53°
Fri, 2199° / 68°0Clear
99 °Clear

Portsmouth, Friday, 21 August

Clear. High 99°, low 68°.

Pressure29.65 inHg
Wind15.1 mph NW
Humidity20%
Visibility—
Dew point47°
Sat, 2289° / 67°0Clear
89 °Clear

Portsmouth, Saturday, 22 August

Clear. High 89°, low 67°.

Pressure29.97 inHg
Wind15 mph N
Humidity26%
Visibility—
Dew point46°

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 Portsmouth, 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.