As of 05:07 PDT

Weather in Grangeville, ID

60°

Grangeville, Sunday, 9 August, 05:07

Clear. Feels like 58°. High 89°, low 59°.

Pressure29.97 inHg

Wind2 mph S

Humidity46%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Monthly outlook for Grangeville, ID: average high 83.5°, average low 56.6°. That is 1.9° above the climate normal for August. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 15 August (94.2°), the coolest 23 August (49.9°).

83.5°/56.6°

Average high / low

+1.9°

Above normal

4 / 3

Wet days / normal

1.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	87.1°	81.1°	+3.3°
19 August – 28 August	77.4°	78°	-0.3°
29 August – 7 September	at normal	76°	—

August records over 66 years

102.2°4 August 1961All-time high

36°28 August 1960All-time low

Mon, 1088° / 55°

88 °

Grangeville, Monday, 10 August

Clear. High 88°, low 55°.

Pressure29.85 inHg

Wind4.1 mph N

Humidity12%

Visibility6.2 mi

Dew point27°

Tue, 1192° / 56°

92 °

Grangeville, Tuesday, 11 August

Clear. High 92°, low 56°.

Pressure29.91 inHg

Wind5 mph N

Humidity14%

Visibility6.2 mi

Dew point31°

Wed, 1291° / 58°

91 °

Grangeville, Wednesday, 12 August

Overcast. High 91°, low 58°.

Pressure29.83 inHg

Wind2.8 mph N

Humidity18%

Visibility6.2 mi

Dew point35°

Thu, 1388° / 59°

88 °

Grangeville, Thursday, 13 August

Overcast. High 88°, low 59°.

Pressure29.77 inHg

Wind12.1 mph N

Humidity26%

Visibility—

Dew point39°

Fri, 1489° / 60°

89 °

Grangeville, Friday, 14 August

Overcast. High 89°, low 60°.

Pressure29.85 inHg

Wind9.1 mph N

Humidity21%

Visibility—

Dew point36°

Sat, 1594° / 60°

0.02

94 °

Grangeville, Saturday, 15 August

Light rain. High 94°, low 60°.

Pressure29.94 inHg

Wind9.5 mph NE

Humidity29%

Visibility—

Dew point45°

Sun, 1683° / 60°

0.27

83 °

Grangeville, Sunday, 16 August

Rain. High 83°, low 60°.

Pressure29.97 inHg

Wind5 mph SW

Humidity60%

Visibility—

Dew point56°

Mon, 1782° / 55°

0.23

82 °

Grangeville, Monday, 17 August

Rain. High 82°, low 55°.

Pressure29.88 inHg

Wind12.7 mph SW

Humidity50%

Visibility—

Dew point53°

Tue, 1875° / 54°

75 °

Grangeville, Tuesday, 18 August

Overcast. High 75°, low 54°.

Pressure29.97 inHg

Wind9.4 mph N

Humidity58%

Visibility—

Dew point50°

Wed, 1977° / 58°

77 °

Grangeville, Wednesday, 19 August

Overcast. High 77°, low 58°.

Pressure29.97 inHg

Wind6.3 mph NE

Humidity43%

Visibility—

Dew point46°

Thu, 2084° / 57°

0.01

84 °

Grangeville, Thursday, 20 August

Light rain. High 84°, low 57°.

Pressure29.88 inHg

Wind7.7 mph NE

Humidity37%

Visibility—

Dew point46°

Fri, 2179° / 58°

0.15

79 °

Grangeville, Friday, 21 August

Light rain. High 79°, low 58°.

Pressure29.85 inHg

Wind14.4 mph N

Humidity47%

Visibility—

Dew point50°

Sat, 2270° / 52°

1.04

70 °

Grangeville, Saturday, 22 August

Rain. High 70°, low 52°.

Pressure29.88 inHg

Wind11.3 mph NW

Humidity63%

Visibility—

Dew point52°

Sun, 2374° / 50°

74 °

Grangeville, Sunday, 23 August

Clear. High 74°, low 50°.

Pressure30.03 inHg

Wind6.4 mph N

Humidity47%

Visibility—

Dew point44°

Mon, 2481° / 54°

81 °

Grangeville, Monday, 24 August

Overcast. High 81°, low 54°.

Pressure29.83 inHg

Wind10.6 mph N

Humidity34%

Visibility—

Dew point40°

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

Tue, 2577° / 52°

0.04

77 °

Grangeville, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high77°

Average low52°

Average precipitation0.04 in

Chance of precipitation13%

Record high92° (2010)

Record low38° (1960)

Wed, 2678° / 52°

0.04

78 °

Grangeville, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high78°

Average low52°

Average precipitation0.04 in

Chance of precipitation17%

Record high95° (2010)

Record low40° (1992)

Thu, 2778° / 53°

0.04

78 °

Grangeville, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high78°

Average low53°

Average precipitation0.04 in

Chance of precipitation22%

Record high91° (2009)

Record low39° (1976)

Fri, 2878° / 52°

0.03

78 °

Grangeville, Friday, 28 August

Climate normal for this date — 60-year average.

Average high78°

Average low52°

Average precipitation0.03 in

Chance of precipitation15%

Record high95° (2009)

Record low36° (1960)

Sat, 2979° / 52°

0.03

79 °

Grangeville, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high79°

Average low52°

Average precipitation0.03 in

Chance of precipitation17%

Record high94° (2017)

Record low38° (1980)

Sun, 3076° / 53°

0.07

76 °

Grangeville, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high76°

Average low53°

Average precipitation0.07 in

Chance of precipitation25%

Record high91° (2016)

Record low37° (1965)

Mon, 3175° / 51°

0.09

75 °

Grangeville, Monday, 31 August

Climate normal for this date — 60-year average.

Average high75°

Average low51°

Average precipitation0.09 in

Chance of precipitation20%

Record high97° (2022)

Record low37° (1977)

Tue, 0176° / 51°

0.03

76 °

Grangeville, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high76°

Average low51°

Average precipitation0.03 in

Chance of precipitation20%

Record high93° (1967)

Record low40° (1999)

Wed, 0276° / 51°

0.04

76 °

Grangeville, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°

Average low51°

Average precipitation0.04 in

Chance of precipitation15%

Record high94° (2017)

Record low39° (2008)

Thu, 0376° / 50°

0.03

76 °

Grangeville, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°

Average low50°

Average precipitation0.03 in

Chance of precipitation12%

Record high95° (2017)

Record low38° (2000)

Fri, 0476° / 50°

0.05

76 °

Grangeville, Friday, 4 September

Climate normal for this date — 60-year average.

Average high76°

Average low50°

Average precipitation0.05 in

Chance of precipitation12%

Record high93° (2006)

Record low38° (1965)

Sat, 0576° / 51°

0.04

76 °

Grangeville, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high76°

Average low51°

Average precipitation0.04 in

Chance of precipitation17%

Record high91° (1988)

Record low40° (1969)

Sun, 0675° / 51°

0.06

75 °

Grangeville, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°

Average low51°

Average precipitation0.06 in

Chance of precipitation23%

Record high91° (2017)

Record low38° (2015)

Mon, 0774° / 50°

0.06

74 °

Grangeville, Monday, 7 September

Climate normal for this date — 60-year average.

Average high74°

Average low50°

Average precipitation0.06 in

Chance of precipitation17%

Record high90° (1998)

Record low35° (1992)

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 Grangeville, ID 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 Grangeville, ID 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.