Monthly outlook for Northboro, IA: average high 94.8°, average low 70.2°. That is 6.3° above the climate normal for August. Precipitation is expected on 7 days (about 1.0 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 19 August (116.4°), the coolest 14 August (63.3°).
94.8°/70.2°
Average high / low
+6.3°
Above normal
7 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
88°
83.4°
+2.5°
19 August – 28 August
106.3°
83.6°
+12.6°
29 August – 7 September
at normal
81.8°
—
August records over 66 years
101.8°16 August 1983All-time high
46°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Shenandoah (11 mi).
Mon, 1092° / 74°0
92 °
Northboro, Monday, 10 August
Overcast. High 92°, low 74°.
Pressure29.85 inHg
Wind5.3 mph S
Humidity43%
Visibility6.2 mi
Dew point62°
Tue, 11107° / 69°0.04
107 °
Northboro, Tuesday, 11 August
Light rain. High 107°, low 69°.
Pressure29.74 inHg
Wind13.2 mph SW
Humidity29%
Visibility6.2 mi
Dew point61°
Wed, 1293° / 67°0.04
93 °
Northboro, Wednesday, 12 August
Light rain. High 93°, low 67°.
Pressure29.83 inHg
Wind8.5 mph E
Humidity56%
Visibility6.2 mi
Dew point66°
Thu, 1378° / 66°0.19
78 °
Northboro, Thursday, 13 August
Light rain. High 78°, low 66°.
Pressure29.91 inHg
Wind22.1 mph E
Humidity93%
Visibility—
Dew point71°
Fri, 1470° / 63°0.15
70 °
Northboro, Friday, 14 August
Light rain. High 70°, low 63°.
Pressure30.03 inHg
Wind21.3 mph E
Humidity90%
Visibility—
Dew point64°
Sat, 1573° / 64°0.19
73 °
Northboro, Saturday, 15 August
Light rain. High 73°, low 64°.
Pressure30.12 inHg
Wind8.9 mph E
Humidity94%
Visibility—
Dew point66°
Sun, 1686° / 65°0.02
86 °
Northboro, Sunday, 16 August
Light rain. High 86°, low 65°.
Pressure30.12 inHg
Wind9.3 mph NE
Humidity57%
Visibility—
Dew point64°
Mon, 1785° / 68°0.07
85 °
Northboro, Monday, 17 August
Light rain. High 85°, low 68°.
Pressure30.06 inHg
Wind11.1 mph SE
Humidity73%
Visibility—
Dew point66°
Tue, 18101° / 68°0
101 °
Northboro, Tuesday, 18 August
Overcast. High 101°, low 68°.
Pressure29.83 inHg
Wind14.6 mph SE
Humidity35%
Visibility—
Dew point61°
Wed, 19116° / 76°0
116 °
Northboro, Wednesday, 19 August
Mostly clear. High 116°, low 76°.
Pressure29.74 inHg
Wind18.2 mph SW
Humidity14%
Visibility—
Dew point47°
Thu, 20105° / 78°0
105 °
Northboro, Thursday, 20 August
Clear. High 105°, low 78°.
Pressure29.74 inHg
Wind14.1 mph NW
Humidity18%
Visibility—
Dew point50°
Fri, 2197° / 73°0
97 °
Northboro, Friday, 21 August
Overcast. High 97°, low 73°.
Pressure29.88 inHg
Wind16.4 mph NE
Humidity33%
Visibility—
Dew point57°
Sat, 22115° / 75°0.01
115 °
Northboro, Saturday, 22 August
Light rain. High 115°, low 75°.
Pressure29.71 inHg
Wind21.4 mph SW
Humidity14%
Visibility—
Dew point48°
Sun, 23104° / 71°0.25
104 °
Northboro, Sunday, 23 August
Rain. High 104°, low 71°.
Pressure29.80 inHg
Wind16.2 mph SE
Humidity24%
Visibility—
Dew point55°
Mon, 24100° / 69°0.06
100 °
Northboro, Monday, 24 August
Light rain. High 100°, low 69°.
Pressure29.91 inHg
Wind10 mph S
Humidity45%
Visibility—
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 66°0.12
84 °
Northboro, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.12 in
Chance of precipitation27%
Record high99° (2003)
Record low52° (1966)
Wed, 2684° / 67°0.2
84 °
Northboro, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.2 in
Chance of precipitation40%
Record high97° (1976)
Record low53° (2025)
Thu, 2783° / 67°0.11
83 °
Northboro, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.11 in
Chance of precipitation30%
Record high97° (1984)
Record low52° (1967)
Fri, 2883° / 65°0.15
83 °
Northboro, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.15 in
Chance of precipitation27%
Record high99° (1984)
Record low46° (1986)
Sat, 2983° / 65°0.07
83 °
Northboro, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.07 in
Chance of precipitation22%
Record high96° (1984)
Record low54° (2004)
Sun, 3083° / 66°0.11
83 °
Northboro, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.11 in
Chance of precipitation28%
Record high99° (2013)
Record low50° (2009)
Mon, 3182° / 65°0.12
82 °
Northboro, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (1990)
Record low49° (2009)
Tue, 0182° / 65°0.09
82 °
Northboro, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation27%
Record high96° (1984)
Record low49° (1965)
Wed, 0282° / 65°0.09
82 °
Northboro, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation28%
Record high95° (2000)
Record low53° (1974)
Thu, 0382° / 64°0.1
82 °
Northboro, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.1 in
Chance of precipitation25%
Record high92° (2000)
Record low42° (1974)
Fri, 0481° / 64°0.13
81 °
Northboro, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.13 in
Chance of precipitation25%
Record high98° (2012)
Record low45° (1974)
Sat, 0581° / 64°0.13
81 °
Northboro, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.13 in
Chance of precipitation25%
Record high94° (1990)
Record low43° (1962)
Sun, 0682° / 63°0.08
82 °
Northboro, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.08 in
Chance of precipitation18%
Record high97° (1970)
Record low47° (2025)
Mon, 0781° / 63°0.18
81 °
Northboro, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.18 in
Chance of precipitation35%
Record high95° (2013)
Record low47° (2025)
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 Northboro, 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 Northboro, 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.