Monthly outlook for Fontenelle, WY: average high 87°, average low 66°. That is 3.9° above the climate normal for August. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 2 days and 0.3 inches. The warmest day looks like 23 August (94.6°), the coolest 10 August (53.8°).
87°/66°
Average high / low
+3.9°
Above normal
2 / 2
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.7°
80.5°
+1.8°
19 August – 28 August
92.4°
78.7°
+7.6°
29 August – 7 September
at normal
76.5°
—
August records over 66 years
95.9°3 August 2024All-time high
33.4°31 August 1965All-time low
Mon, 1088° / 54°0
88 °
Fontenelle, Monday, 10 August
Partly cloudy. High 88°, low 54°.
Pressure29.85 inHg
Wind12.5 mph W
Humidity17%
Visibility6.2 mi
Dew point37°
Tue, 1191° / 65°0
91 °
Fontenelle, Tuesday, 11 August
Overcast. High 91°, low 65°.
Pressure29.91 inHg
Wind3.1 mph NW
Humidity12%
Visibility6.2 mi
Dew point27°
Wed, 1285° / 69°0
85 °
Fontenelle, Wednesday, 12 August
Overcast. High 85°, low 69°.
Pressure29.80 inHg
Wind3.9 mph E
Humidity14%
Visibility6.2 mi
Dew point29°
Thu, 1379° / 63°0.15
79 °
Fontenelle, Thursday, 13 August
Rain. High 79°, low 63°.
Pressure29.74 inHg
Wind35.1 mph SW
Humidity25%
Visibility—
Dew point39°
Fri, 1477° / 60°0.06
77 °
Fontenelle, Friday, 14 August
Light rain. High 77°, low 60°.
Pressure29.88 inHg
Wind20 mph W
Humidity35%
Visibility—
Dew point43°
Sat, 1581° / 63°0
81 °
Fontenelle, Saturday, 15 August
Overcast. High 81°, low 63°.
Pressure30.06 inHg
Wind20.6 mph SW
Humidity25%
Visibility—
Dew point36°
Sun, 1683° / 67°0
83 °
Fontenelle, Sunday, 16 August
Overcast. High 83°, low 67°.
Pressure30.09 inHg
Wind8.7 mph SW
Humidity23%
Visibility—
Dew point36°
Mon, 1783° / 70°0
83 °
Fontenelle, Monday, 17 August
Overcast. High 83°, low 70°.
Pressure30.06 inHg
Wind23 mph W
Humidity27%
Visibility—
Dew point41°
Tue, 1885° / 66°0
85 °
Fontenelle, Tuesday, 18 August
Clear. High 85°, low 66°.
Pressure30.06 inHg
Wind14.6 mph W
Humidity20%
Visibility—
Dew point34°
Wed, 1989° / 66°0
89 °
Fontenelle, Wednesday, 19 August
Clear. High 89°, low 66°.
Pressure30.03 inHg
Wind17.2 mph W
Humidity16%
Visibility—
Dew point31°
Thu, 2092° / 67°0
92 °
Fontenelle, Thursday, 20 August
Clear. High 92°, low 67°.
Pressure29.97 inHg
Wind11.4 mph W
Humidity13%
Visibility—
Dew point28°
Fri, 2194° / 70°0
94 °
Fontenelle, Friday, 21 August
Mostly clear. High 94°, low 70°.
Pressure29.88 inHg
Wind17.4 mph NW
Humidity14%
Visibility—
Dew point31°
Sat, 2292° / 72°0
92 °
Fontenelle, Saturday, 22 August
Overcast. High 92°, low 72°.
Pressure29.94 inHg
Wind10.2 mph NW
Humidity16%
Visibility—
Dew point34°
Sun, 2395° / 71°0
95 °
Fontenelle, Sunday, 23 August
Overcast. High 95°, low 71°.
Pressure30.03 inHg
Wind9.5 mph E
Humidity18%
Visibility—
Dew point37°
Mon, 2493° / 72°0
93 °
Fontenelle, Monday, 24 August
Overcast. High 93°, low 72°.
Pressure30.03 inHg
Wind8.8 mph SW
Humidity18%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 52°0.01
79 °
Fontenelle, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low52°
Average precipitation0.01 in
Chance of precipitation8%
Record high88° (2011)
Record low38° (1975)
Wed, 2678° / 53°0.02
78 °
Fontenelle, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low53°
Average precipitation0.02 in
Chance of precipitation13%
Record high88° (2010)
Record low35° (1992)
Thu, 2778° / 52°0.02
78 °
Fontenelle, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low52°
Average precipitation0.02 in
Chance of precipitation12%
Record high89° (2020)
Record low38° (1992)
Fri, 2878° / 51°0.01
78 °
Fontenelle, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.01 in
Chance of precipitation10%
Record high87° (2012)
Record low40° (2004)
Sat, 2979° / 51°0.01
79 °
Fontenelle, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low51°
Average precipitation0.01 in
Chance of precipitation7%
Record high88° (2005)
Record low37° (1964)
Sun, 3079° / 52°0.01
79 °
Fontenelle, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low52°
Average precipitation0.01 in
Chance of precipitation10%
Record high90° (2022)
Record low38° (1964)
Mon, 3177° / 51°0.01
77 °
Fontenelle, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low51°
Average precipitation0.01 in
Chance of precipitation12%
Record high86° (2022)
Record low33° (1965)
Tue, 0177° / 50°0.03
77 °
Fontenelle, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low50°
Average precipitation0.03 in
Chance of precipitation8%
Record high90° (2022)
Record low39° (1980)
Wed, 0276° / 50°0.02
76 °
Fontenelle, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low50°
Average precipitation0.02 in
Chance of precipitation17%
Record high89° (2019)
Record low36° (1973)
Thu, 0377° / 50°0.02
77 °
Fontenelle, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low50°
Average precipitation0.02 in
Chance of precipitation12%
Record high88° (2022)
Record low34° (1964)
Fri, 0477° / 49°0.02
77 °
Fontenelle, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low49°
Average precipitation0.02 in
Chance of precipitation12%
Record high93° (2022)
Record low36° (1968)
Sat, 0576° / 49°0.02
76 °
Fontenelle, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low49°
Average precipitation0.02 in
Chance of precipitation7%
Record high92° (2022)
Record low36° (1968)
Sun, 0675° / 49°0.03
75 °
Fontenelle, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0.03 in
Chance of precipitation10%
Record high90° (2022)
Record low39° (1996)
Mon, 0774° / 48°0.02
74 °
Fontenelle, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low48°
Average precipitation0.02 in
Chance of precipitation13%
Record high92° (2022)
Record low36° (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 Fontenelle, WY 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 Fontenelle, WY 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.