Monthly outlook for Loma Linda, AZ: average high 78.2°, average low 60.5°. That is 8.5° below the climate normal for August. Precipitation is expected on 10 days (about 1.6 inches), against a normal of 6 days and 1.5 inches. The warmest day looks like 10 August (88.3°), the coolest 13 August (55.3°).
78.2°/60.5°
Average high / low
−8.5°
Below normal
10 / 6
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
77.4°
93.6°
-9°
19 August – 28 August
79.5°
93.5°
-7.8°
29 August – 7 September
at normal
93.1°
—
August records over 66 years
107.4°6 August 2025All-time high
62.8°30 August 1992All-time low
Climate normals and records are computed from the nearest reference point — Catalina (9 mi).
Mon, 1088° / 59°0.21
88 °
Loma Linda, Monday, 10 August
Rain. High 88°, low 59°.
Pressure29.94 inHg
Wind5.3 mph W
Humidity33%
Visibility6.2 mi
Dew point52°
Tue, 1177° / 59°0.06
77 °
Loma Linda, Tuesday, 11 August
Light rain. High 77°, low 59°.
Pressure29.97 inHg
Wind8.1 mph W
Humidity41%
Visibility6.2 mi
Dew point54°
Wed, 1271° / 59°0.27
71 °
Loma Linda, Wednesday, 12 August
Rain. High 71°, low 59°.
Pressure29.91 inHg
Wind5.2 mph W
Humidity53%
Visibility6.2 mi
Dew point57°
Thu, 1370° / 55°0.3
70 °
Loma Linda, Thursday, 13 August
Light rain. High 70°, low 55°.
Pressure29.88 inHg
Wind4.3 mph W
Humidity46%
Visibility6.2 mi
Dew point54°
Fri, 1473° / 60°0
73 °
Loma Linda, Friday, 14 August
Overcast. High 73°, low 60°.
Pressure29.97 inHg
Wind7.6 mph W
Humidity42%
Visibility—
Dew point44°
Sat, 1574° / 61°0
74 °
Loma Linda, Saturday, 15 August
Overcast. High 74°, low 61°.
Pressure30.03 inHg
Wind7.3 mph NW
Humidity36%
Visibility—
Dew point41°
Sun, 1676° / 60°0
76 °
Loma Linda, Sunday, 16 August
Overcast. High 76°, low 60°.
Pressure30.06 inHg
Wind10.6 mph W
Humidity34%
Visibility—
Dew point40°
Mon, 1778° / 62°0
78 °
Loma Linda, Monday, 17 August
Clear. High 78°, low 62°.
Pressure29.97 inHg
Wind9.2 mph W
Humidity34%
Visibility—
Dew point42°
Tue, 1880° / 65°0.02
80 °
Loma Linda, Tuesday, 18 August
Light rain. High 80°, low 65°.
Pressure29.94 inHg
Wind11.7 mph NW
Humidity29%
Visibility—
Dew point40°
Wed, 1979° / 61°0.04
79 °
Loma Linda, Wednesday, 19 August
Light rain. High 79°, low 61°.
Pressure30.00 inHg
Wind8.4 mph E
Humidity36%
Visibility—
Dew point44°
Thu, 2081° / 62°0.08
81 °
Loma Linda, Thursday, 20 August
Light rain. High 81°, low 62°.
Pressure30.00 inHg
Wind10.5 mph W
Humidity32%
Visibility—
Dew point42°
Fri, 2178° / 61°0.08
78 °
Loma Linda, Friday, 21 August
Light rain. High 78°, low 61°.
Pressure30.03 inHg
Wind9.6 mph NW
Humidity46%
Visibility—
Dew point49°
Sat, 2280° / 61°0.39
80 °
Loma Linda, Saturday, 22 August
Rain. High 80°, low 61°.
Pressure29.94 inHg
Wind10.4 mph SE
Humidity38%
Visibility—
Dew point46°
Sun, 2381° / 61°0.11
81 °
Loma Linda, Sunday, 23 August
Light rain. High 81°, low 61°.
Pressure29.97 inHg
Wind13.7 mph NE
Humidity36%
Visibility—
Dew point46°
Mon, 2479° / 60°0.04
79 °
Loma Linda, Monday, 24 August
Light rain. High 79°, low 60°.
Pressure30.00 inHg
Wind5.9 mph W
Humidity35%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2593° / 73°0.07
93 °
Loma Linda, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high93°
Average low73°
Average precipitation0.07 in
Chance of precipitation40%
Record high104° (2011)
Record low63° (1992)
Wed, 2694° / 73°0.07
94 °
Loma Linda, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0.07 in
Chance of precipitation37%
Record high104° (2011)
Record low65° (1992)
Thu, 2794° / 73°0.06
94 °
Loma Linda, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0.06 in
Chance of precipitation30%
Record high104° (2011)
Record low64° (1992)
Fri, 2894° / 73°0.04
94 °
Loma Linda, Friday, 28 August
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0.04 in
Chance of precipitation32%
Record high104° (2023)
Record low67° (1987)
Sat, 2994° / 73°0.06
94 °
Loma Linda, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0.06 in
Chance of precipitation28%
Record high105° (2023)
Record low68° (2016)
Sun, 3094° / 73°0.03
94 °
Loma Linda, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0.03 in
Chance of precipitation28%
Record high105° (2011)
Record low63° (1992)
Mon, 3194° / 73°0.04
94 °
Loma Linda, Monday, 31 August
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0.04 in
Chance of precipitation27%
Record high104° (2011)
Record low64° (2000)
Tue, 0193° / 73°0.06
93 °
Loma Linda, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high93°
Average low73°
Average precipitation0.06 in
Chance of precipitation28%
Record high102° (2011)
Record low66° (1966)
Wed, 0293° / 73°0.06
93 °
Loma Linda, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high93°
Average low73°
Average precipitation0.06 in
Chance of precipitation25%
Record high101° (1970)
Record low65° (2000)
Thu, 0393° / 73°0.05
93 °
Loma Linda, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high93°
Average low73°
Average precipitation0.05 in
Chance of precipitation28%
Record high101° (1983)
Record low65° (1973)
Fri, 0492° / 72°0.09
92 °
Loma Linda, Friday, 4 September
Climate normal for this date — 60-year average.
Average high92°
Average low72°
Average precipitation0.09 in
Chance of precipitation28%
Record high104° (2020)
Record low56° (1961)
Sat, 0592° / 72°0.07
92 °
Loma Linda, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high92°
Average low72°
Average precipitation0.07 in
Chance of precipitation23%
Record high104° (2020)
Record low63° (1984)
Sun, 0693° / 72°0.06
93 °
Loma Linda, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high93°
Average low72°
Average precipitation0.06 in
Chance of precipitation27%
Record high102° (2020)
Record low62° (1988)
Mon, 0792° / 72°0.07
92 °
Loma Linda, Monday, 7 September
Climate normal for this date — 60-year average.
Average high92°
Average low72°
Average precipitation0.07 in
Chance of precipitation27%
Record high101° (1979)
Record low64° (1985)
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 Loma Linda, AZ 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 Loma Linda, AZ 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.