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West Puente Valley, CA Weather
West Puente Valley, California sits at 34.0523, -117.9667. Its warmest month is August, when the day usually reaches 92F, and its coldest is December, when the night usually falls to 46F. February is the wettest, with rain on about 8 days. The hottest day in the station record is 115F on September 6, 2020, and the coldest night 21F on January 7, 1913. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About West Puente Valley weather
West Puente Valley sits at 34.0523, -117.9667 and covers about 1.87 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
Where these numbers come from
Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in West Puente Valley
West Puente Valley is warmest in August, when the day usually reaches 92F, and coldest in December, when the night usually falls to 46F. February is the wettest month, with rain on about 8 days of it.
Usual high and low, by month
Days with rain, by month
The same year as numbers
Month
Usual high
Usual low
Rain days
January
68F
47F
7
February
70F
48F
8
March
73F
50F
6
April
77F
52F
3
May
79F
56F
3
June
84F
59F
2
July
89F
63F
1
August
92F
64F
0
September
90F
63F
1
October
83F
58F
3
November
75F
51F
3
December
67F
46F
6
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Pasadena station 12.2 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
West Puente Valley weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for West Puente Valley: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
West Puente Valley weather records
In 161,371 days of observations West Puente Valley has been as hot as 115F and as cold as 21F. Not averages: the actual days.
Hottest day
115F
September 6, 2020
Coldest night
21F
January 7, 1913
Wettest day
8.73 in
January 24, 1943
Biggest snow
16.0 in
December 29, 1974
NOAA GHCN daily station records, observed 1893 to 2026: temperature at the Pasadena station, 12.2 miles away; precipitation at the Covina City Yard Fc387B station, 5.7 miles away; snowfall at the Mt Wilson Cbs station, 13.7 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about West Puente Valley weather
Common questions
What is the weather usually like in West Puente Valley, CA?
West Puente Valley is warmest in August, when the day usually reaches 92F, and coldest in December, when the night usually falls to 46F. Rain falls on roughly 43 days a year, most often in February. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in West Puente Valley, CA?
About 43 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. February is the wettest month with rain on about 8 of its days, and August the driest with about 0.
What is the hottest it has ever been in West Puente Valley, CA?
The hottest day measured for West Puente Valley reached 115F on September 6, 2020, and the coldest night 21F on January 7, 1913. Both are real NOAA station measurements from the GHCN daily archive, observed 1893 to 2026, at the Pasadena station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for West Puente Valley, CA?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the West Puente Valley forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.