Monthly outlook for Adna, CO: average high 93.9°, average low 63°. That is 5° above the climate normal for August. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 4 days and 0.6 inches. The warmest day looks like 11 August (103.1°), the coolest 21 August (58.9°).
93.9°/63°
Average high / low
+5°
Above normal
5 / 4
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
95.7°
85°
+5.9°
18 August – 27 August
90.8°
84.8°
+3.3°
28 August – 6 September
at normal
83.4°
—
August records over 66 years
100.6°4 August 2024All-time high
42.4°27 August 1992All-time low
Climate normals and records are computed from the nearest reference point — Greeley (6 mi).
Sun, 0997° / 66°0.01
97 °
Adna, Sunday, 9 August
Light rain. High 97°, low 66°.
Pressure29.74 inHg
Wind5.6 mph NE
Humidity9%
Visibility6.2 mi
Dew point31°
Mon, 10101° / 62°0
101 °
Adna, Monday, 10 August
Clear. High 101°, low 62°.
Pressure29.77 inHg
Wind2.7 mph E
Humidity14%
Visibility6.2 mi
Dew point40°
Tue, 11103° / 67°0
103 °
Adna, Tuesday, 11 August
Overcast. High 103°, low 67°.
Pressure29.74 inHg
Wind5.3 mph NE
Humidity11%
Visibility6.2 mi
Dew point37°
Wed, 12101° / 62°0
101 °
Adna, Wednesday, 12 August
Overcast. High 101°, low 62°.
Pressure29.74 inHg
Wind3.6 mph SE
Humidity16%
Visibility6.2 mi
Dew point42°
Thu, 1390° / 60°0.32
90 °
Adna, Thursday, 13 August
Rain. High 90°, low 60°.
Pressure29.91 inHg
Wind14 mph SE
Humidity43%
Visibility—
Dew point54°
Fri, 1487° / 64°0.31
87 °
Adna, Friday, 14 August
Rain. High 87°, low 64°.
Pressure29.91 inHg
Wind14.1 mph W
Humidity41%
Visibility—
Dew point54°
Sat, 1591° / 61°0.05
91 °
Adna, Saturday, 15 August
Light rain. High 91°, low 61°.
Pressure29.94 inHg
Wind17.4 mph SW
Humidity32%
Visibility—
Dew point50°
Sun, 1693° / 64°0.02
93 °
Adna, Sunday, 16 August
Light rain. High 93°, low 64°.
Pressure29.94 inHg
Wind16.7 mph NW
Humidity22%
Visibility—
Dew point46°
Mon, 1795° / 66°0.03
95 °
Adna, Monday, 17 August
Light rain. High 95°, low 66°.
Pressure29.97 inHg
Wind24.2 mph NW
Humidity25%
Visibility—
Dew point47°
Tue, 1892° / 61°0
92 °
Adna, Tuesday, 18 August
Overcast. High 92°, low 61°.
Pressure29.97 inHg
Wind11.5 mph W
Humidity28%
Visibility—
Dew point47°
Wed, 1995° / 65°0
95 °
Adna, Wednesday, 19 August
Overcast. High 95°, low 65°.
Pressure29.85 inHg
Wind22.4 mph W
Humidity26%
Visibility—
Dew point46°
Thu, 2086° / 62°0.42
86 °
Adna, Thursday, 20 August
Rain. High 86°, low 62°.
Pressure29.97 inHg
Wind8.9 mph E
Humidity48%
Visibility—
Dew point57°
Fri, 2192° / 59°0
92 °
Adna, Friday, 21 August
Clear. High 92°, low 59°.
Pressure29.91 inHg
Wind11.8 mph SE
Humidity40%
Visibility—
Dew point54°
Sat, 2290° / 63°0.22
90 °
Adna, Saturday, 22 August
Rain. High 90°, low 63°.
Pressure29.88 inHg
Wind12.6 mph SE
Humidity26%
Visibility—
Dew point48°
Sun, 2389° / 60°0
89 °
Adna, Sunday, 23 August
Clear. High 89°, low 60°.
Pressure29.97 inHg
Wind8 mph E
Humidity44%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2485° / 58°0.06
85 °
Adna, Monday, 24 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0.06 in
Chance of precipitation10%
Record high99° (2020)
Record low47° (1968)
Tue, 2585° / 58°0.02
85 °
Adna, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0.02 in
Chance of precipitation20%
Record high99° (2020)
Record low46° (1972)
Wed, 2685° / 58°0.03
85 °
Adna, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0.03 in
Chance of precipitation18%
Record high96° (2020)
Record low50° (1992)
Thu, 2784° / 58°0.04
84 °
Adna, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.04 in
Chance of precipitation13%
Record high96° (2020)
Record low42° (1992)
Fri, 2884° / 57°0.02
84 °
Adna, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0.02 in
Chance of precipitation12%
Record high95° (2011)
Record low45° (2004)
Sat, 2985° / 57°0.03
85 °
Adna, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low57°
Average precipitation0.03 in
Chance of precipitation17%
Record high95° (2012)
Record low48° (2004)
Sun, 3084° / 57°0.03
84 °
Adna, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0.03 in
Chance of precipitation18%
Record high97° (1990)
Record low47° (1968)
Mon, 3183° / 57°0.02
83 °
Adna, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.02 in
Chance of precipitation13%
Record high97° (1960)
Record low46° (1968)
Tue, 0183° / 56°0.04
83 °
Adna, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0.04 in
Chance of precipitation13%
Record high95° (1995)
Record low47° (1962)
Wed, 0283° / 56°0.02
83 °
Adna, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0.02 in
Chance of precipitation15%
Record high98° (2019)
Record low44° (1974)
Thu, 0383° / 56°0.02
83 °
Adna, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0.02 in
Chance of precipitation8%
Record high96° (2017)
Record low39° (1974)
Fri, 0483° / 56°0.02
83 °
Adna, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0.02 in
Chance of precipitation13%
Record high96° (1960)
Record low43° (1961)
Sat, 0583° / 55°0.02
83 °
Adna, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low55°
Average precipitation0.02 in
Chance of precipitation13%
Record high100° (2020)
Record low44° (1962)
Sun, 0682° / 56°0.02
82 °
Adna, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.02 in
Chance of precipitation13%
Record high100° (2020)
Record low46° (1961)
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 Adna, CO 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 Adna, CO 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.