Monthly outlook for Puritan, CO: average high 93°, average low 64.1°. That is 5.9° above the climate normal for August. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 11 August (101.8°), the coolest 23 August (59.3°).
93°/64.1°
Average high / low
+5.9°
Above normal
5 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
94.4°
82.5°
+6.7°
18 August – 27 August
90.6°
82.3°
+4.6°
28 August – 6 September
at normal
81°
—
August records over 66 years
98.8°7 August 2025All-time high
41.7°28 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Longmont (8 mi).
Sun, 0995° / 66°0.02
95 °
Puritan, Sunday, 9 August
Light rain. High 95°, low 66°.
Pressure29.74 inHg
Wind7 mph E
Humidity10%
Visibility6.2 mi
Dew point32°
Mon, 1099° / 63°0.01
99 °
Puritan, Monday, 10 August
Light rain. High 99°, low 63°.
Pressure29.77 inHg
Wind7.6 mph SE
Humidity14%
Visibility6.2 mi
Dew point38°
Tue, 11102° / 67°0.01
102 °
Puritan, Tuesday, 11 August
Light rain. High 102°, low 67°.
Pressure29.77 inHg
Wind5.1 mph E
Humidity12%
Visibility6.2 mi
Dew point36°
Wed, 12101° / 63°0.01
101 °
Puritan, Wednesday, 12 August
Light rain. High 101°, low 63°.
Pressure29.74 inHg
Wind4.1 mph SE
Humidity15%
Visibility6.2 mi
Dew point40°
Thu, 1388° / 61°0.65
88 °
Puritan, Thursday, 13 August
Heavy rain. High 88°, low 61°.
Pressure29.88 inHg
Wind14.7 mph W
Humidity40%
Visibility—
Dew point53°
Fri, 1486° / 64°0.32
86 °
Puritan, Friday, 14 August
Rain. High 86°, low 64°.
Pressure29.94 inHg
Wind23 mph SW
Humidity45%
Visibility—
Dew point55°
Sat, 1590° / 61°0.03
90 °
Puritan, Saturday, 15 August
Light rain. High 90°, low 61°.
Pressure29.97 inHg
Wind24 mph SW
Humidity34%
Visibility—
Dew point51°
Sun, 1693° / 66°0.01
93 °
Puritan, Sunday, 16 August
Light rain. High 93°, low 66°.
Pressure29.97 inHg
Wind21.5 mph S
Humidity22%
Visibility—
Dew point45°
Mon, 1794° / 68°0.02
94 °
Puritan, Monday, 17 August
Light rain. High 94°, low 68°.
Pressure29.97 inHg
Wind16.8 mph NW
Humidity24%
Visibility—
Dew point46°
Tue, 1892° / 62°0.01
92 °
Puritan, Tuesday, 18 August
Light rain. High 92°, low 62°.
Pressure29.97 inHg
Wind11.1 mph NW
Humidity27%
Visibility—
Dew point46°
Wed, 1992° / 67°0.07
92 °
Puritan, Wednesday, 19 August
Light rain. High 92°, low 67°.
Pressure29.85 inHg
Wind16.1 mph NW
Humidity23%
Visibility—
Dew point44°
Thu, 2086° / 64°0.27
86 °
Puritan, Thursday, 20 August
Rain. High 86°, low 64°.
Pressure29.97 inHg
Wind6.6 mph E
Humidity45%
Visibility—
Dew point56°
Fri, 2193° / 60°0.01
93 °
Puritan, Friday, 21 August
Light rain. High 93°, low 60°.
Pressure29.91 inHg
Wind8.4 mph SW
Humidity36%
Visibility—
Dew point52°
Sat, 2290° / 67°0.05
90 °
Puritan, Saturday, 22 August
Light rain. High 90°, low 67°.
Pressure29.88 inHg
Wind11.4 mph E
Humidity24%
Visibility—
Dew point46°
Sun, 2389° / 59°0
89 °
Puritan, Sunday, 23 August
Clear. High 89°, low 59°.
Pressure29.97 inHg
Wind12.1 mph NE
Humidity40%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 57°0.06
82 °
Puritan, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0.06 in
Chance of precipitation22%
Record high96° (2020)
Record low47° (1968)
Tue, 2582° / 56°0.04
82 °
Puritan, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.04 in
Chance of precipitation8%
Record high95° (2020)
Record low48° (1964)
Wed, 2682° / 56°0.06
82 °
Puritan, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.06 in
Chance of precipitation28%
Record high92° (2007)
Record low48° (1992)
Thu, 2782° / 57°0.05
82 °
Puritan, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0.05 in
Chance of precipitation20%
Record high94° (2020)
Record low43° (1992)
Fri, 2882° / 56°0.02
82 °
Puritan, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.02 in
Chance of precipitation17%
Record high92° (2011)
Record low42° (2004)
Sat, 2982° / 56°0.03
82 °
Puritan, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.03 in
Chance of precipitation18%
Record high94° (2012)
Record low47° (2004)
Sun, 3082° / 56°0.05
82 °
Puritan, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.05 in
Chance of precipitation15%
Record high92° (1990)
Record low46° (1964)
Mon, 3181° / 55°0.04
81 °
Puritan, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.04 in
Chance of precipitation20%
Record high94° (2011)
Record low46° (1968)
Tue, 0181° / 54°0.06
81 °
Puritan, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.06 in
Chance of precipitation20%
Record high94° (2019)
Record low44° (1965)
Wed, 0281° / 54°0.04
81 °
Puritan, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.04 in
Chance of precipitation18%
Record high98° (2019)
Record low42° (1974)
Thu, 0381° / 54°0.02
81 °
Puritan, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.02 in
Chance of precipitation13%
Record high93° (2017)
Record low38° (1961)
Fri, 0481° / 54°0.04
81 °
Puritan, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.04 in
Chance of precipitation17%
Record high93° (1960)
Record low42° (1961)
Sat, 0581° / 54°0.03
81 °
Puritan, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.03 in
Chance of precipitation18%
Record high97° (2020)
Record low44° (1962)
Sun, 0680° / 54°0.02
80 °
Puritan, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low54°
Average precipitation0.02 in
Chance of precipitation13%
Record high99° (2020)
Record low44° (1968)
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 Puritan, 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 Puritan, 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.