Monthly outlook for Hesper, MT: average high 94.2°, average low 63.4°. That is 4.8° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 21 August (100°), the coolest 10 August (52.5°).
94.2°/63.4°
Average high / low
+4.8°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
94.1°
85.9°
+4.6°
18 August – 27 August
94.5°
84.5°
+5.5°
28 August – 6 September
at normal
82.1°
—
August records over 66 years
104.2°5 August 1961All-time high
38.3°25 August 1992All-time low
Climate normals and records are computed from the nearest reference point — Billings (8 mi).
Sun, 0994° / 60°0
94 °
Hesper, Sunday, 9 August
Clear. High 94°, low 60°.
Pressure29.80 inHg
Wind13.8 mph NW
Humidity10%
Visibility6.2 mi
Dew point26°
Mon, 1093° / 52°0
93 °
Hesper, Monday, 10 August
Clear. High 93°, low 52°.
Pressure29.83 inHg
Wind5.2 mph E
Humidity25%
Visibility6.2 mi
Dew point42°
Tue, 1195° / 63°0
95 °
Hesper, Tuesday, 11 August
Clear. High 95°, low 63°.
Pressure29.85 inHg
Wind7.4 mph N
Humidity16%
Visibility6.2 mi
Dew point38°
Wed, 1291° / 64°0
91 °
Hesper, Wednesday, 12 August
Overcast. High 91°, low 64°.
Pressure29.83 inHg
Wind9.2 mph NE
Humidity22%
Visibility6.2 mi
Dew point43°
Thu, 1394° / 65°0
94 °
Hesper, Thursday, 13 August
Light rain. High 94°, low 65°.
Pressure29.85 inHg
Wind12.7 mph NE
Humidity40%
Visibility—
Dew point53°
Fri, 1498° / 71°0
98 °
Hesper, Friday, 14 August
Light rain. High 98°, low 71°.
Pressure29.77 inHg
Wind14 mph NE
Humidity20%
Visibility—
Dew point41°
Sat, 1587° / 64°0
87 °
Hesper, Saturday, 15 August
Light rain. High 87°, low 64°.
Pressure29.97 inHg
Wind11.9 mph S
Humidity39%
Visibility—
Dew point52°
Sun, 1695° / 62°0
95 °
Hesper, Sunday, 16 August
Clear. High 95°, low 62°.
Pressure29.94 inHg
Wind8.7 mph N
Humidity28%
Visibility—
Dew point48°
Mon, 1798° / 67°0
98 °
Hesper, Monday, 17 August
Overcast. High 98°, low 67°.
Pressure29.94 inHg
Wind15.7 mph N
Humidity14%
Visibility—
Dew point34°
Tue, 1895° / 64°0
95 °
Hesper, Tuesday, 18 August
Overcast. High 95°, low 64°.
Pressure29.88 inHg
Wind15.4 mph NW
Humidity18%
Visibility—
Dew point37°
Wed, 1987° / 61°0
87 °
Hesper, Wednesday, 19 August
Mostly clear. High 87°, low 61°.
Pressure30.00 inHg
Wind17.3 mph NE
Humidity33%
Visibility—
Dew point46°
Thu, 2096° / 61°0
96 °
Hesper, Thursday, 20 August
Partly cloudy. High 96°, low 61°.
Pressure29.88 inHg
Wind10.9 mph NE
Humidity26%
Visibility—
Dew point44°
Fri, 21100° / 68°0
100 °
Hesper, Friday, 21 August
Clear. High 100°, low 68°.
Pressure29.80 inHg
Wind17.7 mph NE
Humidity15%
Visibility—
Dew point37°
Sat, 2296° / 64°0.02
96 °
Hesper, Saturday, 22 August
Light rain. High 96°, low 64°.
Pressure29.94 inHg
Wind12.4 mph E
Humidity29%
Visibility—
Dew point46°
Sun, 2394° / 64°0
94 °
Hesper, Sunday, 23 August
Clear. High 94°, low 64°.
Pressure30.00 inHg
Wind16.6 mph E
Humidity29%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2484° / 58°0.04
84 °
Hesper, Monday, 24 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.04 in
Chance of precipitation20%
Record high100° (1969)
Record low42° (1992)
Tue, 2583° / 58°0.02
83 °
Hesper, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low58°
Average precipitation0.02 in
Chance of precipitation10%
Record high101° (2008)
Record low38° (1992)
Wed, 2684° / 58°0.02
84 °
Hesper, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.02 in
Chance of precipitation13%
Record high98° (2010)
Record low40° (1992)
Thu, 2784° / 58°0.02
84 °
Hesper, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.02 in
Chance of precipitation17%
Record high96° (2011)
Record low42° (1993)
Fri, 2884° / 58°0.02
84 °
Hesper, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.02 in
Chance of precipitation15%
Record high98° (2012)
Record low43° (1960)
Sat, 2984° / 58°0.02
84 °
Hesper, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.02 in
Chance of precipitation12%
Record high97° (2005)
Record low44° (1964)
Sun, 3083° / 58°0.03
83 °
Hesper, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low58°
Average precipitation0.03 in
Chance of precipitation15%
Record high97° (2008)
Record low41° (1993)
Mon, 3182° / 56°0.03
82 °
Hesper, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.03 in
Chance of precipitation13%
Record high98° (1991)
Record low42° (1993)
Tue, 0182° / 56°0.07
82 °
Hesper, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.07 in
Chance of precipitation10%
Record high99° (2022)
Record low47° (1972)
Wed, 0283° / 57°0.04
83 °
Hesper, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.04 in
Chance of precipitation10%
Record high98° (2024)
Record low41° (2008)
Thu, 0382° / 56°0.04
82 °
Hesper, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.04 in
Chance of precipitation8%
Record high101° (2022)
Record low41° (1974)
Fri, 0481° / 55°0.03
81 °
Hesper, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.03 in
Chance of precipitation15%
Record high101° (2022)
Record low39° (1962)
Sat, 0581° / 55°0.03
81 °
Hesper, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.03 in
Chance of precipitation10%
Record high102° (2020)
Record low41° (1962)
Sun, 0680° / 55°0.04
80 °
Hesper, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.04 in
Chance of precipitation13%
Record high94° (1988)
Record low42° (1965)
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 Hesper, MT 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 Hesper, MT 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.