Monthly outlook for Porcupine, ND: average high 85.4°, average low 64.7°. That is 2.6° above the climate normal for August. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 18 August (97.5°), the coolest 10 August (58.7°).
85.4°/64.7°
Average high / low
+2.6°
Above normal
5 / 4
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87°
80.9°
+3.4°
19 August – 28 August
82.7°
80.3°
+1.3°
29 August – 7 September
at normal
78°
—
August records over 66 years
101.7°22 August 2010All-time high
43°12 August 1964All-time low
Climate normals and records are computed from the nearest reference point — Selfridge (15 mi).
Mon, 1094° / 59°0.8
94 °
Porcupine, Monday, 10 August
Heavy rain. High 94°, low 59°.
Pressure29.80 inHg
Wind8.4 mph SE
Humidity38%
Visibility6.2 mi
Dew point58°
Tue, 1187° / 63°0
87 °
Porcupine, Tuesday, 11 August
Mostly clear. High 87°, low 63°.
Pressure29.91 inHg
Wind9.8 mph NE
Humidity43%
Visibility6.2 mi
Dew point52°
Wed, 1288° / 66°0.01
88 °
Porcupine, Wednesday, 12 August
Light rain. High 88°, low 66°.
Pressure29.91 inHg
Wind7.5 mph E
Humidity36%
Visibility6.2 mi
Dew point51°
Thu, 1375° / 64°0
75 °
Porcupine, Thursday, 13 August
Overcast. High 75°, low 64°.
Pressure30.00 inHg
Wind12.2 mph E
Humidity42%
Visibility—
Dew point48°
Fri, 1472° / 61°0.04
72 °
Porcupine, Friday, 14 August
Light rain. High 72°, low 61°.
Pressure30.06 inHg
Wind17.3 mph SE
Humidity57%
Visibility—
Dew point55°
Sat, 1585° / 64°0.02
85 °
Porcupine, Saturday, 15 August
Light rain. High 85°, low 64°.
Pressure30.03 inHg
Wind11.5 mph N
Humidity52%
Visibility—
Dew point58°
Sun, 1688° / 62°0
88 °
Porcupine, Sunday, 16 August
Overcast. High 88°, low 62°.
Pressure30.12 inHg
Wind9.7 mph E
Humidity33%
Visibility—
Dew point48°
Mon, 1794° / 68°0.22
94 °
Porcupine, Monday, 17 August
Light rain. High 94°, low 68°.
Pressure29.85 inHg
Wind14.9 mph SE
Humidity60%
Visibility—
Dew point65°
Tue, 1898° / 75°0
98 °
Porcupine, Tuesday, 18 August
Overcast. High 98°, low 75°.
Pressure29.74 inHg
Wind10.4 mph W
Humidity24%
Visibility—
Dew point50°
Wed, 1997° / 71°0.02
97 °
Porcupine, Wednesday, 19 August
Light rain. High 97°, low 71°.
Pressure29.77 inHg
Wind16.6 mph NW
Humidity25%
Visibility—
Dew point50°
Thu, 2086° / 69°0
86 °
Porcupine, Thursday, 20 August
Overcast. High 86°, low 69°.
Pressure30.00 inHg
Wind8.5 mph NE
Humidity34%
Visibility—
Dew point48°
Fri, 2184° / 65°0.1
84 °
Porcupine, Friday, 21 August
Light rain. High 84°, low 65°.
Pressure29.85 inHg
Wind13.8 mph SE
Humidity45%
Visibility—
Dew point56°
Sat, 2276° / 66°0.28
76 °
Porcupine, Saturday, 22 August
Rain. High 76°, low 66°.
Pressure29.80 inHg
Wind14.7 mph NE
Humidity71%
Visibility—
Dew point64°
Sun, 2371° / 61°0.14
71 °
Porcupine, Sunday, 23 August
Light rain. High 71°, low 61°.
Pressure29.97 inHg
Wind11.8 mph E
Humidity78%
Visibility—
Dew point58°
Mon, 2482° / 61°0
82 °
Porcupine, Monday, 24 August
Light rain. High 82°, low 61°.
Pressure30.03 inHg
Wind8.3 mph SE
Humidity62%
Visibility—
Dew point59°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 60°0.02
80 °
Porcupine, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low60°
Average precipitation0.02 in
Chance of precipitation10%
Record high96° (1991)
Record low45° (1992)
Wed, 2679° / 60°0.06
79 °
Porcupine, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.06 in
Chance of precipitation27%
Record high98° (1970)
Record low47° (2014)
Thu, 2780° / 59°0.09
80 °
Porcupine, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low59°
Average precipitation0.09 in
Chance of precipitation33%
Record high99° (2010)
Record low47° (1992)
Fri, 2880° / 60°0.07
80 °
Porcupine, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low60°
Average precipitation0.07 in
Chance of precipitation27%
Record high97° (1991)
Record low47° (1988)
Sat, 2980° / 60°0.05
80 °
Porcupine, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low60°
Average precipitation0.05 in
Chance of precipitation15%
Record high99° (2012)
Record low47° (1988)
Sun, 3080° / 59°0.06
80 °
Porcupine, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low59°
Average precipitation0.06 in
Chance of precipitation18%
Record high96° (1990)
Record low47° (1992)
Mon, 3179° / 60°0.04
79 °
Porcupine, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.04 in
Chance of precipitation23%
Record high92° (1975)
Record low44° (1994)
Tue, 0178° / 58°0.05
78 °
Porcupine, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0.05 in
Chance of precipitation18%
Record high96° (2022)
Record low41° (1965)
Wed, 0278° / 59°0.06
78 °
Porcupine, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low59°
Average precipitation0.06 in
Chance of precipitation27%
Record high98° (1976)
Record low42° (1974)
Thu, 0378° / 58°0.03
78 °
Porcupine, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0.03 in
Chance of precipitation15%
Record high96° (2015)
Record low42° (1974)
Fri, 0478° / 58°0.06
78 °
Porcupine, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0.06 in
Chance of precipitation20%
Record high94° (1978)
Record low40° (1962)
Sat, 0578° / 58°0.06
78 °
Porcupine, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0.06 in
Chance of precipitation20%
Record high99° (1978)
Record low34° (1965)
Sun, 0677° / 56°0.06
77 °
Porcupine, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.06 in
Chance of precipitation15%
Record high97° (1978)
Record low40° (2025)
Mon, 0776° / 55°0.11
76 °
Porcupine, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.11 in
Chance of precipitation25%
Record high95° (2002)
Record low37° (1986)
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 Porcupine, 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 Porcupine, 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.