As of 21:03 CDT

Weather in Grant, IA

76°

Grant, Saturday, 8 August, 21:03

Light rain. Feels like 77°. High 81°, low 63°.

Pressure29.88 inHg

Wind11.6 mph S

Humidity84%

Visibility6.2 mi

Dew point70°

See detailed hourly forecast

Monthly outlook for Grant, IA: average high 81.5°, average low 64.8°. That is 0.4° below the climate normal for August. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (96.8°), the coolest 21 August (52.6°).

81.5°/64.8°

Average high / low

−0.4°

Below normal

4 / 5

Wet days / normal

1.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	82.3°	82.1°	+0.1°
18 August – 27 August	80.2°	82.2°	-1.1°
28 August – 6 September	at normal	80.7°	—

August records over 66 years

101.3°16 August 1983All-time high

43.3°28 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Lewis (12 mi).

Sun, 0997° / 76°

0.01

97 °

Grant, Sunday, 9 August

Light rain. High 97°, low 76°.

Pressure29.74 inHg

Wind18.1 mph SW

Humidity53%

Visibility6.2 mi

Dew point70°

Mon, 1089° / 73°

0.01

89 °

Grant, Monday, 10 August

Light rain. High 89°, low 73°.

Pressure29.83 inHg

Wind5.7 mph S

Humidity54%

Visibility6.2 mi

Dew point66°

Tue, 1192° / 73°

92 °

Grant, Tuesday, 11 August

Partly cloudy. High 92°, low 73°.

Pressure29.74 inHg

Wind6.4 mph SW

Humidity48%

Visibility6.2 mi

Dew point67°

Wed, 1285° / 69°

0.13

85 °

Grant, Wednesday, 12 August

Rain. High 85°, low 69°.

Pressure29.88 inHg

Wind12 mph E

Humidity66%

Visibility6.2 mi

Dew point68°

Thu, 1371° / 64°

0.85

71 °

Grant, Thursday, 13 August

Rain. High 71°, low 64°.

Pressure29.91 inHg

Wind19 mph E

Humidity97%

Visibility—

Dew point64°

Fri, 1478° / 62°

0.04

78 °

Grant, Friday, 14 August

Light rain. High 78°, low 62°.

Pressure30.06 inHg

Wind16.3 mph E

Humidity63%

Visibility—

Dew point61°

Sat, 1566° / 60°

0.07

66 °

Grant, Saturday, 15 August

Light rain. High 66°, low 60°.

Pressure30.15 inHg

Wind11.7 mph E

Humidity99%

Visibility—

Dew point65°

Sun, 1679° / 61°

0.01

79 °

Grant, Sunday, 16 August

Light rain. High 79°, low 61°.

Pressure30.09 inHg

Wind7.8 mph E

Humidity74%

Visibility—

Dew point65°

Mon, 1784° / 68°

0.01

84 °

Grant, Monday, 17 August

Light rain. High 84°, low 68°.

Pressure30.03 inHg

Wind7.8 mph S

Humidity65%

Visibility—

Dew point67°

Tue, 1890° / 70°

0.11

90 °

Grant, Tuesday, 18 August

Light rain. High 90°, low 70°.

Pressure29.97 inHg

Wind8.9 mph S

Humidity66%

Visibility—

Dew point71°

Wed, 1976° / 65°

76 °

Grant, Wednesday, 19 August

Overcast. High 76°, low 65°.

Pressure30.03 inHg

Wind15.8 mph NE

Humidity60%

Visibility—

Dew point61°

Thu, 2070° / 57°

70 °

Grant, Thursday, 20 August

Overcast. High 70°, low 57°.

Pressure30.09 inHg

Wind15.7 mph NE

Humidity56%

Visibility—

Dew point52°

Fri, 2168° / 53°

68 °

Grant, Friday, 21 August

Overcast. High 68°, low 53°.

Pressure30.03 inHg

Wind13.6 mph E

Humidity67%

Visibility—

Dew point51°

Sat, 2288° / 59°

88 °

Grant, Saturday, 22 August

Partly cloudy. High 88°, low 59°.

Pressure29.85 inHg

Wind9.2 mph W

Humidity53%

Visibility—

Dew point61°

Sun, 2389° / 65°

89 °

Grant, Sunday, 23 August

Partly cloudy. High 89°, low 65°.

Pressure29.94 inHg

Wind8.3 mph SE

Humidity44%

Visibility—

Dew point57°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2482° / 65°

0.07

82 °

Grant, Monday, 24 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.07 in

Chance of precipitation30%

Record high95° (2003)

Record low49° (1966)

Tue, 2582° / 65°

0.12

82 °

Grant, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.12 in

Chance of precipitation30%

Record high97° (2003)

Record low50° (2015)

Wed, 2682° / 66°

0.19

82 °

Grant, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high82°

Average low66°

Average precipitation0.19 in

Chance of precipitation37%

Record high94° (1976)

Record low51° (2025)

Thu, 2782° / 66°

0.16

82 °

Grant, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high82°

Average low66°

Average precipitation0.16 in

Chance of precipitation33%

Record high95° (2013)

Record low51° (1967)

Fri, 2882° / 64°

0.15

82 °

Grant, Friday, 28 August

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0.15 in

Chance of precipitation25%

Record high97° (1984)

Record low43° (1986)

Sat, 2982° / 64°

0.07

82 °

Grant, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0.07 in

Chance of precipitation17%

Record high95° (1984)

Record low52° (1988)

Sun, 3081° / 65°

0.1

81 °

Grant, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°

Average low65°

Average precipitation0.1 in

Chance of precipitation23%

Record high96° (2013)

Record low49° (2009)

Mon, 3181° / 64°

0.11

81 °

Grant, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.11 in

Chance of precipitation30%

Record high93° (2012)

Record low48° (2009)

Tue, 0181° / 64°

0.06

81 °

Grant, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.06 in

Chance of precipitation25%

Record high94° (1984)

Record low49° (1965)

Wed, 0281° / 64°

0.11

81 °

Grant, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.11 in

Chance of precipitation27%

Record high95° (2000)

Record low51° (1974)

Thu, 0380° / 63°

0.09

80 °

Grant, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.09 in

Chance of precipitation25%

Record high91° (2000)

Record low41° (1974)

Fri, 0480° / 63°

0.11

80 °

Grant, Friday, 4 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.11 in

Chance of precipitation25%

Record high96° (2012)

Record low46° (1974)

Sat, 0580° / 63°

0.1

80 °

Grant, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.1 in

Chance of precipitation23%

Record high92° (1990)

Record low43° (1962)

Sun, 0680° / 62°

0.07

80 °

Grant, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°

Average low62°

Average precipitation0.07 in

Chance of precipitation20%

Record high95° (1970)

Record low46° (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 Grant, 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 Grant, 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.