Monthly outlook for Grand Rapids, ND: average high 83.4°, average low 61.7°. That is 2.3° above the climate normal for August. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 19 August (99.5°), the coolest 10 August (55.7°).
83.4°/61.7°
Average high / low
+2.3°
Above normal
5 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.2°
79.3°
+3.9°
19 August – 28 August
78.7°
79°
-0.2°
29 August – 7 September
at normal
76.7°
—
August records over 66 years
101.5°26 August 1991All-time high
42.3°13 August 1964All-time low
Climate normals and records are computed from the nearest reference point — LaMoure (7 mi).
Mon, 1091° / 56°0.11
91 °
Grand Rapids, Monday, 10 August
Rain. High 91°, low 56°.
Pressure29.85 inHg
Wind7.3 mph SE
Humidity20%
Visibility6.2 mi
Dew point41°
Tue, 1189° / 58°0
89 °
Grand Rapids, Tuesday, 11 August
Partly cloudy. High 89°, low 58°.
Pressure29.91 inHg
Wind11 mph NE
Humidity32%
Visibility6.2 mi
Dew point49°
Wed, 1287° / 60°0
87 °
Grand Rapids, Wednesday, 12 August
Overcast. High 87°, low 60°.
Pressure29.94 inHg
Wind8.8 mph NE
Humidity26%
Visibility6.2 mi
Dew point43°
Thu, 1383° / 61°0
83 °
Grand Rapids, Thursday, 13 August
Overcast. High 83°, low 61°.
Pressure30.03 inHg
Wind12.9 mph E
Humidity29%
Visibility—
Dew point41°
Fri, 1488° / 60°0
88 °
Grand Rapids, Friday, 14 August
Overcast. High 88°, low 60°.
Pressure30.06 inHg
Wind13.9 mph S
Humidity30%
Visibility—
Dew point46°
Sat, 1576° / 65°0.05
76 °
Grand Rapids, Saturday, 15 August
Light rain. High 76°, low 65°.
Pressure30.06 inHg
Wind11.6 mph S
Humidity80%
Visibility—
Dew point60°
Sun, 1685° / 57°0
85 °
Grand Rapids, Sunday, 16 August
Overcast. High 85°, low 57°.
Pressure30.15 inHg
Wind8.2 mph E
Humidity32%
Visibility—
Dew point45°
Mon, 1780° / 66°0.25
80 °
Grand Rapids, Monday, 17 August
Rain. High 80°, low 66°.
Pressure29.94 inHg
Wind14.2 mph SE
Humidity47%
Visibility—
Dew point55°
Tue, 1899° / 65°0.02
99 °
Grand Rapids, Tuesday, 18 August
Light rain. High 99°, low 65°.
Pressure29.74 inHg
Wind9.7 mph SW
Humidity27%
Visibility—
Dew point52°
Wed, 19100° / 74°0.03
100 °
Grand Rapids, Wednesday, 19 August
Light rain. High 100°, low 74°.
Pressure29.74 inHg
Wind7.7 mph S
Humidity20%
Visibility—
Dew point47°
Thu, 2083° / 66°0
83 °
Grand Rapids, Thursday, 20 August
Overcast. High 83°, low 66°.
Pressure29.97 inHg
Wind13.7 mph N
Humidity33%
Visibility—
Dew point47°
Fri, 2176° / 61°0.26
76 °
Grand Rapids, Friday, 21 August
Rain. High 76°, low 61°.
Pressure30.00 inHg
Wind15.6 mph E
Humidity90%
Visibility—
Dew point59°
Sat, 2274° / 63°0.2
74 °
Grand Rapids, Saturday, 22 August
Light rain. High 74°, low 63°.
Pressure29.83 inHg
Wind14.6 mph NE
Humidity76%
Visibility—
Dew point65°
Sun, 2364° / 57°0.02
64 °
Grand Rapids, Sunday, 23 August
Light rain. High 64°, low 57°.
Pressure30.00 inHg
Wind12.1 mph NE
Humidity91%
Visibility—
Dew point57°
Mon, 2476° / 60°0.04
76 °
Grand Rapids, Monday, 24 August
Light rain. High 76°, low 60°.
Pressure30.09 inHg
Wind9.2 mph E
Humidity68%
Visibility—
Dew point59°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 61°0.04
79 °
Grand Rapids, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.04 in
Chance of precipitation15%
Record high95° (1991)
Record low45° (1968)
Wed, 2678° / 60°0.09
78 °
Grand Rapids, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.09 in
Chance of precipitation32%
Record high101° (1991)
Record low45° (1992)
Thu, 2779° / 59°0.06
79 °
Grand Rapids, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low59°
Average precipitation0.06 in
Chance of precipitation20%
Record high97° (1991)
Record low44° (1982)
Fri, 2879° / 60°0.07
79 °
Grand Rapids, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.07 in
Chance of precipitation28%
Record high97° (1991)
Record low43° (1965)
Sat, 2979° / 60°0.06
79 °
Grand Rapids, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.06 in
Chance of precipitation27%
Record high98° (2012)
Record low46° (1988)
Sun, 3078° / 59°0.09
78 °
Grand Rapids, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low59°
Average precipitation0.09 in
Chance of precipitation23%
Record high96° (1961)
Record low48° (2009)
Mon, 3178° / 60°0.04
78 °
Grand Rapids, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.04 in
Chance of precipitation13%
Record high91° (1979)
Record low46° (1992)
Tue, 0177° / 59°0.07
77 °
Grand Rapids, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.07 in
Chance of precipitation32%
Record high94° (1970)
Record low42° (1974)
Wed, 0276° / 59°0.11
76 °
Grand Rapids, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.11 in
Chance of precipitation22%
Record high98° (1983)
Record low40° (1974)
Thu, 0377° / 58°0.09
77 °
Grand Rapids, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low58°
Average precipitation0.09 in
Chance of precipitation18%
Record high97° (1978)
Record low41° (1974)
Fri, 0477° / 59°0.1
77 °
Grand Rapids, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.1 in
Chance of precipitation20%
Record high97° (1978)
Record low44° (1962)
Sat, 0576° / 58°0.07
76 °
Grand Rapids, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.07 in
Chance of precipitation20%
Record high100° (1978)
Record low37° (1965)
Sun, 0676° / 56°0.08
76 °
Grand Rapids, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low56°
Average precipitation0.08 in
Chance of precipitation22%
Record high100° (1978)
Record low42° (1968)
Mon, 0774° / 55°0.07
74 °
Grand Rapids, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.07 in
Chance of precipitation23%
Record high97° (1978)
Record low40° (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 Grand Rapids, ND 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 Grand Rapids, ND 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.