Monthly outlook for Colfax, IA: average high 83°, average low 63.3°. That is 1° above the climate normal for August. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 9 August (94.7°), the coolest 21 August (49.7°).
83°/63.3°
Average high / low
+1°
Above normal
3 / 5
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
83°
81.2°
+0.9°
18 August – 27 August
83°
81.4°
+0.9°
28 August – 6 September
at normal
79.9°
—
August records over 66 years
100.4°16 August 1988All-time high
43.9°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Mitchellville (6 mi).
Sun, 0995° / 74°0
95 °
Colfax, Sunday, 9 August
Clear. High 95°, low 74°.
Pressure29.80 inHg
Wind15 mph SW
Humidity52%
Visibility6.2 mi
Dew point69°
Mon, 1090° / 72°0.07
90 °
Colfax, Monday, 10 August
Rain. High 90°, low 72°.
Pressure29.83 inHg
Wind5.4 mph SE
Humidity58%
Visibility6.2 mi
Dew point70°
Tue, 1192° / 70°0
92 °
Colfax, Tuesday, 11 August
Mostly clear. High 92°, low 70°.
Pressure29.77 inHg
Wind5.1 mph SW
Humidity56%
Visibility6.2 mi
Dew point69°
Wed, 1287° / 70°0.03
87 °
Colfax, Wednesday, 12 August
Light rain. High 87°, low 70°.
Pressure29.88 inHg
Wind7.3 mph NE
Humidity68%
Visibility6.2 mi
Dew point68°
Thu, 1372° / 61°0.12
72 °
Colfax, Thursday, 13 August
Light rain. High 72°, low 61°.
Pressure29.97 inHg
Wind13.4 mph NE
Humidity66%
Visibility—
Dew point59°
Fri, 1479° / 60°0
79 °
Colfax, Friday, 14 August
Overcast. High 79°, low 60°.
Pressure30.09 inHg
Wind10.8 mph E
Humidity50%
Visibility—
Dew point56°
Sat, 1568° / 60°0.07
68 °
Colfax, Saturday, 15 August
Light rain. High 68°, low 60°.
Pressure30.21 inHg
Wind15.3 mph E
Humidity95%
Visibility—
Dew point60°
Sun, 1678° / 62°0
78 °
Colfax, Sunday, 16 August
Light rain. High 78°, low 62°.
Pressure30.12 inHg
Wind6 mph E
Humidity76%
Visibility—
Dew point64°
Mon, 1785° / 66°0.01
85 °
Colfax, Monday, 17 August
Light rain. High 85°, low 66°.
Pressure30.03 inHg
Wind7.2 mph S
Humidity59%
Visibility—
Dew point65°
Tue, 1894° / 68°0
94 °
Colfax, Tuesday, 18 August
Partly cloudy. High 94°, low 68°.
Pressure29.94 inHg
Wind11.1 mph SW
Humidity58%
Visibility—
Dew point68°
Wed, 1979° / 61°0
79 °
Colfax, Wednesday, 19 August
Light rain. High 79°, low 61°.
Pressure30.06 inHg
Wind13.8 mph N
Humidity75%
Visibility—
Dew point59°
Thu, 2069° / 56°0.02
69 °
Colfax, Thursday, 20 August
Light rain. High 69°, low 56°.
Pressure30.09 inHg
Wind11.7 mph NE
Humidity51%
Visibility—
Dew point49°
Fri, 2174° / 50°0
74 °
Colfax, Friday, 21 August
Overcast. High 74°, low 50°.
Pressure30.06 inHg
Wind10.4 mph SE
Humidity53%
Visibility—
Dew point49°
Sat, 2292° / 59°0
92 °
Colfax, Saturday, 22 August
Partly cloudy. High 92°, low 59°.
Pressure29.80 inHg
Wind11.1 mph NW
Humidity46%
Visibility—
Dew point59°
Sun, 2391° / 64°0
91 °
Colfax, Sunday, 23 August
Clear. High 91°, low 64°.
Pressure29.94 inHg
Wind8.5 mph W
Humidity30%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0.09
82 °
Colfax, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation18%
Record high96° (2023)
Record low49° (1966)
Tue, 2582° / 65°0.13
82 °
Colfax, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.13 in
Chance of precipitation38%
Record high96° (2003)
Record low52° (2025)
Wed, 2682° / 65°0.19
82 °
Colfax, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.19 in
Chance of precipitation27%
Record high95° (2013)
Record low50° (2015)
Thu, 2781° / 65°0.16
81 °
Colfax, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.16 in
Chance of precipitation33%
Record high96° (2013)
Record low53° (1967)
Fri, 2882° / 64°0.17
82 °
Colfax, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.17 in
Chance of precipitation37%
Record high96° (1984)
Record low44° (1986)
Sat, 2982° / 64°0.11
82 °
Colfax, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.11 in
Chance of precipitation25%
Record high94° (1984)
Record low50° (1988)
Sun, 3080° / 64°0.13
80 °
Colfax, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation25%
Record high97° (2013)
Record low50° (2009)
Mon, 3180° / 63°0.09
80 °
Colfax, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation25%
Record high94° (2000)
Record low46° (2009)
Tue, 0180° / 63°0.09
80 °
Colfax, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation22%
Record high95° (1984)
Record low46° (1967)
Wed, 0280° / 63°0.09
80 °
Colfax, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation28%
Record high95° (2000)
Record low51° (1974)
Thu, 0379° / 63°0.08
79 °
Colfax, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.08 in
Chance of precipitation22%
Record high94° (2023)
Record low42° (1974)
Fri, 0479° / 62°0.08
79 °
Colfax, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.08 in
Chance of precipitation30%
Record high95° (2023)
Record low43° (1974)
Sat, 0579° / 61°0.07
79 °
Colfax, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high92° (2023)
Record low44° (1962)
Sun, 0679° / 62°0.12
79 °
Colfax, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.12 in
Chance of precipitation28%
Record high93° (2020)
Record low45° (1962)
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 Colfax, 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 Colfax, 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.