Monthly outlook for Boulder Creek, CA: average high 84.1°, average low 60.8°. That is 8.5° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 22 August (94.5°), the coolest 15 August (54.6°).
84.1°/60.8°
Average high / low
+8.5°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79.4°
69°
+5.8°
19 August – 28 August
92°
69°
+12.8°
29 August – 7 September
at normal
70.2°
—
August records over 66 years
99.5°19 August 2020All-time high
50.4°1 August 2011All-time low
Climate normals and records are computed from the nearest reference point — Santa Cruz (12 mi).
Mon, 1084° / 60°0
84 °
Boulder Creek, Monday, 10 August
Partly cloudy. High 84°, low 60°.
Pressure29.88 inHg
Wind5.5 mph SW
Humidity43%
Visibility6.2 mi
Dew point51°
Tue, 1182° / 56°0
82 °
Boulder Creek, Tuesday, 11 August
Partly cloudy. High 82°, low 56°.
Pressure29.94 inHg
Wind5.9 mph SW
Humidity40%
Visibility6.2 mi
Dew point49°
Wed, 1275° / 55°0
75 °
Boulder Creek, Wednesday, 12 August
Clear. High 75°, low 55°.
Pressure29.88 inHg
Wind6.6 mph SW
Humidity53%
Visibility6.2 mi
Dew point53°
Thu, 1370° / 56°0
70 °
Boulder Creek, Thursday, 13 August
Partly cloudy. High 70°, low 56°.
Pressure29.88 inHg
Wind8.3 mph S
Humidity59%
Visibility—
Dew point54°
Fri, 1473° / 55°0
73 °
Boulder Creek, Friday, 14 August
Partly cloudy. High 73°, low 55°.
Pressure29.94 inHg
Wind7.7 mph S
Humidity49%
Visibility—
Dew point51°
Sat, 1574° / 55°0
74 °
Boulder Creek, Saturday, 15 August
Mostly clear. High 74°, low 55°.
Pressure30.00 inHg
Wind6.7 mph S
Humidity50%
Visibility—
Dew point53°
Sun, 1677° / 57°0
77 °
Boulder Creek, Sunday, 16 August
Overcast. High 77°, low 57°.
Pressure30.09 inHg
Wind5.4 mph NW
Humidity44%
Visibility—
Dew point52°
Mon, 1783° / 59°0
83 °
Boulder Creek, Monday, 17 August
Overcast. High 83°, low 59°.
Pressure30.06 inHg
Wind7.4 mph NW
Humidity40%
Visibility—
Dew point54°
Tue, 1887° / 61°0
87 °
Boulder Creek, Tuesday, 18 August
Clear. High 87°, low 61°.
Pressure30.00 inHg
Wind8.2 mph NW
Humidity34%
Visibility—
Dew point53°
Wed, 1989° / 64°0
89 °
Boulder Creek, Wednesday, 19 August
Overcast. High 89°, low 64°.
Pressure29.94 inHg
Wind8.7 mph NW
Humidity28%
Visibility—
Dew point49°
Thu, 2090° / 64°0
90 °
Boulder Creek, Thursday, 20 August
Overcast. High 90°, low 64°.
Pressure29.88 inHg
Wind7.4 mph NW
Humidity31%
Visibility—
Dew point53°
Fri, 2192° / 66°0
92 °
Boulder Creek, Friday, 21 August
Clear. High 92°, low 66°.
Pressure29.83 inHg
Wind5.9 mph NW
Humidity32%
Visibility—
Dew point55°
Sat, 2295° / 67°0
95 °
Boulder Creek, Saturday, 22 August
Clear. High 95°, low 67°.
Pressure29.88 inHg
Wind6.2 mph NW
Humidity28%
Visibility—
Dew point54°
Sun, 2395° / 71°0
95 °
Boulder Creek, Sunday, 23 August
Overcast. High 95°, low 71°.
Pressure29.91 inHg
Wind6.7 mph NW
Humidity31%
Visibility—
Dew point55°
Mon, 2492° / 70°0
92 °
Boulder Creek, Monday, 24 August
Clear. High 92°, low 70°.
Pressure29.88 inHg
Wind8.2 mph NW
Humidity31%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2568° / 57°0
68 °
Boulder Creek, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high68°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high79° (2024)
Record low52° (2024)
Wed, 2669° / 57°0
69 °
Boulder Creek, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high69°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high83° (2024)
Record low53° (2018)
Thu, 2770° / 57°0
70 °
Boulder Creek, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high70°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high87° (2023)
Record low52° (1973)
Fri, 2871° / 58°0
71 °
Boulder Creek, Friday, 28 August
Climate normal for this date — 60-year average.
Average high71°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high87° (2023)
Record low52° (2020)
Sat, 2970° / 58°0
70 °
Boulder Creek, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high70°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high87° (2023)
Record low52° (1960)
Sun, 3070° / 58°0
70 °
Boulder Creek, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high70°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high93° (2025)
Record low52° (1960)
Mon, 3169° / 57°0
69 °
Boulder Creek, Monday, 31 August
Climate normal for this date — 60-year average.
Average high69°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high96° (2025)
Record low52° (2020)
Tue, 0171° / 58°0
71 °
Boulder Creek, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high96° (2017)
Record low51° (2011)
Wed, 0270° / 58°0
70 °
Boulder Creek, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high70°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high100° (2017)
Record low53° (2021)
Thu, 0370° / 58°0
70 °
Boulder Creek, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high70°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high91° (2022)
Record low52° (2021)
Fri, 0470° / 58°0
70 °
Boulder Creek, Friday, 4 September
Climate normal for this date — 60-year average.
Average high70°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high87° (2022)
Record low53° (1973)
Sat, 0571° / 58°0
71 °
Boulder Creek, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high97° (2022)
Record low51° (1965)
Sun, 0671° / 58°0
71 °
Boulder Creek, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high71°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high101° (2020)
Record low52° (2001)
Mon, 0771° / 58°0
71 °
Boulder Creek, Monday, 7 September
Climate normal for this date — 60-year average.
Average high71°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high103° (2020)
Record low52° (2010)
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 Boulder Creek, CA 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 Boulder Creek, CA 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.