Lassen Volcanic National Park Weather Forecast
Lassen Volcanic National Park weather: 55°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Lassen Volcanic National Park is a national park in California. Lassen Volcanic National Park is a US national park known for hydrothermal basins and a plug dome volcano.
Right now it is 55°F (13°C) in Lassen Volcanic National Park with overcast. It feels like 50°F. Today runs from 47°F to 69°F. Chance of precipitation is 0%. Sightseeing conditions score 9.4/10 - excellent - go now.
The best time to visit Lassen Volcanic National Park is June, July and August. The climate is subarctic. February, November and December tend to be the least comfortable months. July is the warmest month with average highs near 78°F, while February is the coldest with lows near 21°F.
The closest major airport is San Francisco International Airport (SFO), about 205 mi away. Nearby highlights include Mount Shasta, Emerald Bay State Park, Redwood National and State Parks and Crater Lake National Park.
In plain terms. Today is about average for September. The forecast high of 69°F is in line with the 67°F typical for this month. The best window to be outside is roughly 12 PM to 3 PM, when temperature, rain chance and wind line up best. hiking is the strongest bet in Lassen Volcanic National Park today at 9.8/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Weather in Lassen Volcanic National Park right now
Source: Open-Meteo. Updated 9:13 PM, Sep 20 local time.
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Lassen Volcanic National Park
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sun, Sep 20 | ☁️ Overcast | 69° / 47° | 0% | 9 mph | 6 |
| Mon, Sep 21 | 🌦️ Light rain | 71° / 51° | 6% · 0,1 in | 12 mph | 6 |
| Tue, Sep 22 | ☁️ Overcast | 69° / 49° | 2% | 8 mph | 6 |
| Wed, Sep 23 | ☁️ Overcast | 72° / 47° | 0% | 9 mph | 6 |
| Thu, Sep 24 | ☁️ Overcast | 67° / 44° | 0% | 17 mph | 6 |
| Fri, Sep 25 | ☁️ Overcast | 66° / 42° | 3% | 10 mph | 6 |
| Sat, Sep 26 | ☁️ Overcast | 67° / 42° | 1% | 15 mph | 6 |
| Sun, Sep 27 | ☁️ Overcast | 65° / 43° | 1% | 10 mph | 6 |
| Mon, Sep 28 | ☀️ Clear sky | 74° / 42° | 1% | 5 mph | 6 |
| Tue, Sep 29 | ☀️ Clear sky | 76° / 47° | 3% | 8 mph | 6 |
| Wed, Sep 30 | ☁️ Overcast | 80° / 50° | 10% | 5 mph | 6 |
| Thu, Oct 1 | 🌧️ Heavy drizzle | 56° / 46° | 8% · 0,3 in | 4 mph | 2 |
| Fri, Oct 2 | ☁️ Overcast | 68° / 42° | 6% | 7 mph | 6 |
| Sat, Oct 3 | ☀️ Clear sky | 71° / 43° | 6% | 5 mph | 6 |
| Sun, Oct 4 | ☁️ Overcast | 69° / 46° | 3% | 11 mph | 6 |
| Mon, Oct 5 | ☀️ Clear sky | 62° / 36° | 3% | 14 mph | 6 |
Climate in Lassen Volcanic National Park month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 38° | 22° | 4,6 in | ★☆☆☆☆ |
| February | 37° | 21° | 10,2 in | ★☆☆☆☆ |
| March | 41° | 25° | 5,9 in | ★★☆☆☆ |
| April | 46° | 27° | 3,3 in | ★★☆☆☆ |
| May | 56° | 34° | 1,6 in | ★★★★☆ |
| June | 71° | 47° | 0,7 in | ★★★★★ |
| July | 78° | 54° | 0,9 in | ★★★★★ |
| August | 75° | 52° | 0,6 in | ★★★★★ |
| September | 67° | 46° | 1,5 in | ★★★★☆ |
| October | 56° | 38° | 1,4 in | ★★★☆☆ |
| November | 43° | 27° | 6,7 in | ★☆☆☆☆ |
| December | 41° | 26° | 9,1 in | ★☆☆☆☆ |
Climate type: Subarctic. Source: Open-Meteo archive (ERA5).
Weather map for Lassen Volcanic National Park
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Lassen Volcanic National Park
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Lassen Volcanic National Park
Go in June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: February, November and December - expect the least comfortable mix of heat, cold or rain.
Explore Lassen Volcanic National Park
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Lassen Volcanic National Park?
Lassen Volcanic National Park is a national park in California. Its coordinates are 40.4977, -121.4207. It lies in North America.
What is the weather like in Lassen Volcanic National Park right now?
It is currently 55°F (13°C) with overcast. Humidity is 42% and wind is 4 mph.
When is the best time to visit Lassen Volcanic National Park?
June, July and August offer the most comfortable conditions in Lassen Volcanic National Park, which has a subarctic climate. February, November and December are usually the hardest months for outdoor plans.
What time zone is Lassen Volcanic National Park in?
Lassen Volcanic National Park observes America/Los_Angeles (UTC-07:00). The local time is 9:13 PM.
What is the nearest airport to Lassen Volcanic National Park?
The closest airports are San Francisco International Airport (SFO), 205 mi away.
What are the top things to do in Lassen Volcanic National Park?
Popular options include Mount Shasta, Emerald Bay State Park, Redwood National and State Parks, Crater Lake National Park, Crater Lake and Alcatraz Island.
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| Place data | USPOTUS Atlas dataset (national-parks) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated September 20, 2026 at 9:13 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
