Crystal Lake Recreation Area Weather

ViewpointGreater Los Angeles

Crystal Lake Recreation Area is a San Gabriel Mountains destination for comparing high-elevation weather, wind, snow, and visibility in the San Gabriel Mountains.

68°
😊
Comfort Score
86(A-)
Excellent
Weather updated August 18, 2026 at 3:52 AM PDT

Crystal Lake Recreation Area weather at a glance

Crystal Lake Recreation Area is a viewpoint at 5,535 feet in Greater Los Angeles. Crystal Lake Recreation Area is a San Gabriel Mountains destination for comparing high-elevation weather, wind, snow, and visibility in the San Gabriel Mountains. Notable features include viewpoint, san-gabriel-mountains, mountain, and snow.

Current conditions are 68°F, feeling like 68°F, with 26% humidity, winds near 5 mph, 88% cloud cover, and a 0% chance of precipitation. Mild and overcast.

The location-specific climate baseline shows an average daily high of 61°F and an average low of 48°F, with about 9.6 hours of sunshine per day and 0.5 hours of morning fog per day. Expected annual precipitation is approximately 26.0 inches.

Current Conditions

Temperature
68°F
Feels like 68°F
Humidity
26%
Wind
5 mph
NW • Gusts 5 mph
Cloud Cover
88%
Precip Chance
0%

Comfort Breakdown

Less comfortableMore comfortable
Temperature100
Wind100
Night Sky5
Humidity95
Precipitation100

Hourly Forecast

Today

TimeTempComfortAQIWindPrecipConditions
Now68°86 (A-)5 mph0%☁️ Cloudy
5am69°85 (A-)4 mph0%☁️ Cloudy
6am70°88 (A-)4 mph0% Partly Cloudy
7am69°88 (A-)4 mph0% Partly Cloudy
8am75°85 (A-)2 mph0%☁️ Cloudy
9am78°79 (B)2 mph0%☁️ Cloudy
10am79°75 (B)5 mph0%☁️ Cloudy
11am81°76 (B)7 mph0%🌤️ Mostly Sunny
12pm82°67 (C)8 mph0%☁️ Cloudy
1pm82°67 (C)10 mph0%☁️ Cloudy
2pm82°67 (C)10 mph0%☁️ Cloudy
3pm81°69 (C)9 mph0%☁️ Cloudy
How to read the Crystal Lake Recreation Area hourly chart

The hourly chart follows the next 48 forecast hours at Crystal Lake Recreation Area. Use the temperature view to see warming and cooling through the day, and the comfort view to see when the combined temperature, wind, clouds, precipitation, and air quality should feel most favorable.

The wind view compares sustained wind with stronger gusts at Crystal Lake Recreation Area. The AQI view uses the current observation for “Now” and modeled AQI-equivalent guidance for later hours when forecast smoke data is available.

Weather Maps

About the weather maps for Crystal Lake Recreation Area

Each preview is centered on Crystal Lake Recreation Area, with the red pin marking its approximate location. Satellite imagery provides cloud context, radar shows nearby precipitation, and the fog view shows the marine-layer or low-cloud field when that regional layer is available.

These images cover a wider area than the point forecast, so a nearby cloud or rain band may not be directly over Crystal Lake Recreation Area. Open a preview for the interactive map and its latest timestamp before making a weather-sensitive decision.

7-Day Forecast

DayHigh/LowComfortPrecipConditions
Today🏆 Best82° / 67°86 (A-)0%☀️ Sunny
Wed86° / 69°80 (B)0%☀️ Sunny
Thu89° / 64°75 (B)0%☀️ Sunny
Fri87° / 65°77 (B)1%☀️ Sunny
Sat88° / 65°76 (B)1%☀️ Sunny
Sun88° / 65°76 (B)1%☀️ Sunny
Mon87° / 63°78 (B)2%☀️ Sunny

Best day this week: Today (Comfort score: 86)

Nearby Temperature Comparison

Conditions at nearby Greater Los Angeles destinations

Tip: Los Angeles temps can vary 20-30°F within a short distance due to microclimates.

Climate Dashboard

Current conditions vs. HRRR rolling destination baseline

Today's High vs Normal
82°Fforecast
8° above normal
Normal: 74°F
Rainfall Year-to-Date
14.9"
3% above average
30-yr avg: 14.4"
Sunny Days
28last 28 days
Right on track
Typical: 28
Foggy Days
0last 28 days
About average
Avg Wind Speed
8.2 mphlast 28 days
1.1 mph calmer than baseline
Typical: 9.3 mph
Comfort Score
9828-day avg
On par with typical
Recent baseline: 97
What the Crystal Lake Recreation Area climate comparisons mean

These cards compare recent conditions at Crystal Lake Recreation Area with the available local baseline. Temperature and year-to-date rainfall use long-term normals when available; fog, sunshine, wind, and comfort use the matching recent or modeled baseline identified on each card.

Positive and negative differences describe how Crystal Lake Recreation Area departs from its own usual pattern. They should not be read as a direct comparison with another city or as a forecast beyond the period shown.

Historical Climate Data

Long-term weather patterns and climate data

Data sources: NOAA HRRR rolling destination baseline for recent temperature, precipitation, fog, cloud, wind, humidity, and sunshine signals.

Climate Overview

Based on HRRR rolling destination baseline (2024-07-01 to 2026-06-30)

82
Avg Comfort
60.7°
Avg High
47.6°
Avg Low
72%
Perfect Days
☀️ Avg Sunshine9.6h/day
🌫️ Avg Fog0.5h/day
💧 Avg Annual Rain26"
🌧️ Rainy Days/yr31 (8%)
🌫️ Foggy Days/yr24
✨ Perfect Days (80+)526

🌟 Best Months to Visit

1. June98
71.1° / 56.9° · ☀️ 12.9h
0 foggy days · 0 rainy days
2. July97
77.8° / 63.2° · ☀️ 12.8h
0 foggy days · 0 rainy days
3. August95
76.2° / 62° · ☀️ 11.5h
0 foggy days · 0 rainy days

⚠️ Challenging Months

1. February39
48.7° / 37.5° · ☀️ 7.4h
💧 7.4" · 6 rainy days · 5 foggy days
2. January45
47.4° / 35.5° · ☀️ 7.9h
💧 3.1" · 5 rainy days · 3 foggy days
3. November49
52° / 39.9° · ☀️ 6.8h
💧 3" · 5 rainy days · 3 foggy days

Monthly Breakdown

MonthComfortHigh/Low☀️ Sun🌫️ Fog💧 RainPerfect
July 20249482.3° / 67.2°12.6h0d0"30
August 20249775.7° / 61.7°11.5h0d0"31
September 20249372.8° / 58.1°10.2h0d0"29
October 20249267.3° / 52.5°9.8h0d0.02"28
November 20246950.4° / 36.8°7h2d0.08"11
December 20247755.3° / 41.5°7.5h0d0"15
January 20256746.4° / 33.4°8.5h2d1.8"9
February 20256949.7° / 37.7°7.4h6d6.17"15
March 20256145.7° / 33.5°7.8h5d4.81"9
April 20257751.8° / 39.2°9.7h5d0.62"19
May 20258962.2° / 47.6°11.2h2d0.19"26
June 20259771.9° / 57.2°12.9h0d0.01"30
July 20259873.3° / 59.2°12.9h0d0.01"31
August 20259776.7° / 62.2°11.5h0d0.01"31
September 20259267.8° / 54.2°9.7h2d0.4"27
October 20258760.5° / 47.6°9.3h2d4.1"25
November 20257053.5° / 43°6.6h3d6.12"18
December 20257053.3° / 42.5°6.7h4d13.08"18
January 20266548.3° / 37.6°7.2h3d4.48"12
February 20266647.7° / 37.2°7.4h4d8.37"13
March 20268860.8° / 47.9°10.5h0d0.27"25
April 20267150.4° / 38.7°9.2h4d1.76"18
May 20268760.3° / 46.3°11h3d0.01"26
June 20269870.2° / 56.6°13h0d0"30
Last updated: 7/24/2026

Climate Trends

Average Temperature by Month

87°F73°F58°F43°F29°FJul '24Aug '24Sep '24Oct '24Nov '24Dec '24Jan '25Feb '25Mar '25Apr '25May '25Jun '25Jul '25Aug '25Sep '25Oct '25Nov '25Dec '25Jan '26Feb '26Mar '26Apr '26May '26Jun '26
Average High
Average Low
About the Crystal Lake Recreation Area climate charts

The temperature chart compares average monthly highs and lows at Crystal Lake Recreation Area, showing both the seasonal cycle and the typical day-to-night range. The comfort chart summarizes how often the combined weather pattern is favorable rather than judging temperature alone.

Precipitation shows the total recorded or modeled rainfall for each month at Crystal Lake Recreation Area. Sunshine compares average bright-sky hours with the daylight available, while fog shows the average number of morning fog or low-cloud hours per day. Switch between the chart tabs to compare the same months across each measure.

Hourly Temperature, Fog, Wind, Cloud Cover, and Solar Radiation Patterns

Average local hour by month from 2016-07-01 to 2026-06-30

How to read the temperature heatmap for Crystal Lake Recreation Area

This heatmap shows how average temperature at Crystal Lake Recreation Area changes by hour and month. Read left to right for the seasons and top to bottom for the time of day; warmer colors identify the usual afternoon peaks and cooler colors show overnight and winter lows.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the fog heatmap for Crystal Lake Recreation Area

This heatmap shows when fog or low cloud is most likely at Crystal Lake Recreation Area. Darker cells mark month-and-hour combinations with a stronger historical fog signal, which helps separate overnight or morning fog from cloud that tends to linger into the afternoon.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the wind heatmap for Crystal Lake Recreation Area

This heatmap shows the typical hourly wind pattern at Crystal Lake Recreation Area through the year. It makes recurring afternoon wind, calmer overnight periods, and seasonal changes easier to compare than a single daily wind value.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the cloud cover heatmap for Crystal Lake Recreation Area

This heatmap shows average cloud cover at Crystal Lake Recreation Area for every month and hour. Use it to see whether cloudiness is mainly an overnight and morning pattern or commonly persists during the part of the day you plan to visit.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the solar radiation heatmap for Crystal Lake Recreation Area

This heatmap shows the average solar radiation reaching Crystal Lake Recreation Area by month and hour. Brighter cells indicate the strongest typical sun, while muted cells can reflect nighttime, shorter winter days, cloud cover, smoke, or terrain shading.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

Loading interactive climate heatmaps…

Location Details

📍
Coordinates
34.3206, -117.8335
⛰️
Elevation
5535 ft
🏷️
Type
Viewpoint
🏷️
Tags
#viewpoint#san-gabriel-mountains#mountain#snow
Map
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Frequently Asked Questions

Everything you need to know about weather and visiting Crystal Lake Recreation Area

What is the weather at Crystal Lake Recreation Area right now?

Current conditions at Crystal Lake Recreation Area are 68°F, feeling like 68°F, with 26% humidity, winds near 5 mph, 88% cloud cover, and a 0% chance of precipitation. Mild and overcast

What temperatures are typical at Crystal Lake Recreation Area?

The location-specific record for 2024-07-01 through 2026-06-30 shows an average daily high of 61°F and an average low of 48°F at Crystal Lake Recreation Area. These are averages across the year; the monthly climate table on this page shows the warmer and cooler seasons separately.

How much rain does Crystal Lake Recreation Area get?

The location-specific climate baseline estimates about 26.0 inches of precipitation and 31 days with measurable rain in a typical year at Crystal Lake Recreation Area. The monthly breakdown shows when that rain is most likely.

How often is Crystal Lake Recreation Area foggy?

Crystal Lake Recreation Area averages about 0.5 hours of morning fog per day across the location-specific climate baseline, with approximately 24 foggy days in a typical year. Fog varies considerably by season, so check the monthly breakdown and current forecast for visit planning.

What are the best months to visit Crystal Lake Recreation Area for comfortable weather?

Based on the destination's recorded comfort, temperature, sunshine, rain, and fog data, the strongest months are July 2025 (73°F/59°F average high/low and a 98 comfort score), June 2026 (70°F/57°F average high/low and a 98 comfort score), and August 2024 (76°F/62°F average high/low and a 97 comfort score). “Best” depends on the activity, so use the monthly table for the exact tradeoffs.

What kind of destination is Crystal Lake Recreation Area?

Crystal Lake Recreation Area is a viewpoint at 5,535 feet. Crystal Lake Recreation Area is a San Gabriel Mountains destination for comparing high-elevation weather, wind, snow, and visibility in the San Gabriel Mountains. Notable features include viewpoint, san-gabriel-mountains, mountain, and snow.

💡 Local Tip: Greater Los Angeles weather can change dramatically within short distances and throughout the day. Always check current conditions before visiting Crystal Lake Recreation Area.
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