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Simi Valley, California weather · now

63°

Mostly Cloudy

High / Low
87° / 63°
Wind
6 mph W
Humidity
70%
No precipitation expected in the next 1.5 hours.
ModerateAir quality PollenTreeNoneGrassHighWeedLow
Sun 5:52 AM 8:09 PM 14h 17m
Moon Waning Crescent 12% lit

Current weather and 7-day forecast for Simi Valley, California, sourced directly from the National Weather Service. Expect mostly cloudy then patchy fog today. Today's high is 87° with a low near 63°. 1 active weather alert in effect.

What to wear today

Loose, light, and water nearby

87°F — wear breathable fabrics and stay hydrated.

Next 24 hours

55° 75° 95° ↑ 87° ↓ 63° 4 AM 7 AM 10 AM 1 PM 4 PM 7 PM 10 PM 1 AM

  1. 4 AM

    63°

    0%

  2. 6 AM

    64°

    0%

  3. 8 AM

    74°

    0%

  4. 10 AM

    80°

    0%

  5. 12 PM

    85°

    0%

  6. 2 PM

    86°

    0%

  7. 4 PM

    81°

    0%

  8. 6 PM

    77°

    5%

  9. 8 PM

    72°

    5%

  10. 10 PM

    70°

    5%

  11. 12 AM

    70°

    5%

  12. 2 AM

    66°

    5%

Live radar

View full radar →
Open full radar →

Live cameras nearby

See what it actually looks like out there.

  • Traffic camera at SR-23 : (741) n/o Olsen Rd LIVE · 2m
    SR-23 : (741) n/o Olsen Rd3.5 miCaltrans
  • Traffic camera at SR-23 : (740) Olsen Rd LIVE · 2m
    SR-23 : (740) Olsen Rd3.8 miCaltrans
  • Traffic camera at SR-23 : (735) South of Tierra Rejada LIVE · 2m
    SR-23 : (735) South of Tierra Rejada3.9 miCaltrans
  • Traffic camera at SR-23 : (739) Sunset Hills Blvd LIVE · 2m
    SR-23 : (739) Sunset Hills Blvd4.6 miCaltrans

Feeds from public state DOT systems. Images may briefly stale, rotate, or go offline during maintenance.

7 days

  1. Today 7/11 Mostly Cloudy then Patchy Fog 5% 87° · 63°
    1. 4 AM 63° Mostly Cloudy
    2. 5 AM 64° Mostly Cloudy
    3. 6 AM 64° Partly Sunny
    4. 7 AM 70° Partly Sunny
    5. 8 AM 74° Partly Sunny
    6. 9 AM 77° Partly Sunny
    7. 10 AM 80° Partly Sunny
    8. 11 AM 82° Partly Sunny
    9. 12 PM 85° Partly Sunny
    10. 1 PM 87° Partly Sunny
    11. 2 PM 86° Partly Sunny
    12. 3 PM 84° Partly Sunny
    13. 4 PM 81° Partly Sunny
    14. 5 PM 79° Patchy Fog 5%
    15. 6 PM 77° Patchy Fog 5%
    16. 7 PM 76° Patchy Fog 5%
    17. 8 PM 72° Patchy Fog 5%
    18. 9 PM 69° Patchy Fog 5%
    19. 10 PM 70° Patchy Fog 5%
    20. 11 PM 68° Partly Cloudy 5%
  2. Sun 7/12 Patchy Fog then Partly Sunny 11% 86° · 65°
    1. 12 AM 70° Partly Cloudy 5%
    2. 1 AM 68° Partly Cloudy 5%
    3. 2 AM 66° Partly Cloudy 5%
    4. 3 AM 65° Partly Cloudy 5%
    5. 4 AM 68° Partly Cloudy 5%
    6. 5 AM 67° Patchy Fog 5%
    7. 6 AM 65° Patchy Fog 5%
    8. 7 AM 70° Patchy Fog 5%
    9. 8 AM 72° Patchy Fog 5%
    10. 9 AM 77° Patchy Fog 5%
    11. 10 AM 81° Patchy Fog 5%
    12. 11 AM 85° Partly Sunny 11%
    13. 12 PM 85° Partly Sunny 11%
    14. 1 PM 86° Partly Sunny 11%
    15. 2 PM 85° Partly Sunny 11%
    16. 3 PM 83° Partly Sunny 11%
    17. 4 PM 82° Partly Sunny 11%
    18. 5 PM 80° Mostly Sunny 11%
    19. 6 PM 80° Partly Cloudy 11%
    20. 7 PM 76° Partly Cloudy 11%
    21. 8 PM 72° Partly Cloudy 11%
    22. 9 PM 71° Partly Cloudy 11%
    23. 10 PM 70° Partly Cloudy 11%
    24. 11 PM 70° Patchy Fog 8%
  3. Mon 7/13 Mostly Sunny 11% 86° · 64°
    1. 12 AM 69° Patchy Fog 8%
    2. 1 AM 67° Patchy Fog 8%
    3. 2 AM 66° Patchy Fog 8%
    4. 3 AM 65° Patchy Fog 8%
    5. 4 AM 65° Patchy Fog 8%
    6. 5 AM 66° Partly Cloudy 8%
    7. 6 AM 66° Mostly Sunny 8%
    8. 7 AM 67° Mostly Sunny 8%
    9. 8 AM 69° Mostly Sunny 8%
    10. 9 AM 73° Mostly Sunny 8%
    11. 10 AM 78° Mostly Sunny 8%
    12. 11 AM 82° Mostly Sunny 11%
    13. 12 PM 85° Mostly Sunny 11%
    14. 1 PM 86° Mostly Sunny 11%
    15. 2 PM 86° Mostly Sunny 11%
    16. 3 PM 86° Mostly Sunny 11%
    17. 4 PM 86° Mostly Sunny 11%
    18. 5 PM 85° Sunny 2%
    19. 6 PM 82° Mostly Clear 2%
    20. 7 PM 78° Mostly Clear 2%
    21. 8 PM 74° Mostly Clear 2%
    22. 9 PM 71° Mostly Clear 2%
    23. 10 PM 69° Mostly Clear 2%
    24. 11 PM 67° Mostly Clear 2%
  4. Tue 7/14 Sunny 1% 90° · 67°
    1. 12 AM 65° Mostly Clear 2%
    2. 1 AM 65° Mostly Clear 2%
    3. 2 AM 64° Mostly Clear 2%
    4. 3 AM 64° Mostly Clear 2%
    5. 4 AM 64° Mostly Clear 2%
    6. 5 AM 64° Mostly Clear
    7. 6 AM 65° Sunny
    8. 7 AM 66° Sunny
    9. 8 AM 69° Sunny
    10. 9 AM 75° Sunny
    11. 10 AM 82° Sunny
    12. 11 AM 87° Sunny
    13. 12 PM 90° Sunny
    14. 1 PM 90° Sunny
    15. 2 PM 90° Sunny
    16. 3 PM 89° Sunny
    17. 4 PM 89° Sunny
    18. 5 PM 86° Sunny 1%
    19. 6 PM 84° Clear 1%
    20. 7 PM 81° Clear 1%
    21. 8 PM 79° Clear 1%
    22. 9 PM 76° Clear 1%
    23. 10 PM 74° Clear 1%
    24. 11 PM 72° Mostly Clear 1%
  5. Wed 7/15 Sunny 0% 92° · 69°
    1. 12 AM 71° Mostly Clear 1%
    2. 1 AM 70° Mostly Clear 1%
    3. 2 AM 69° Mostly Clear 1%
    4. 3 AM 68° Mostly Clear 1%
    5. 4 AM 68° Mostly Clear 1%
    6. 5 AM 69° Mostly Clear
    7. 6 AM 70° Sunny
    8. 7 AM 72° Sunny
    9. 8 AM 75° Sunny
    10. 9 AM 80° Sunny
    11. 10 AM 86° Sunny
    12. 11 AM 90° Sunny
    13. 12 PM 92° Sunny
    14. 1 PM 92° Sunny
    15. 2 PM 91° Sunny
    16. 3 PM 91° Sunny
    17. 4 PM 91° Sunny
    18. 5 PM 90° Sunny
    19. 6 PM 88° Clear
    20. 7 PM 86° Clear
    21. 8 PM 83° Clear
    22. 9 PM 80° Clear
    23. 10 PM 77° Clear
    24. 11 PM 75° Mostly Clear
  6. Thu 7/16 Sunny 13% 89° · 64°
    1. 12 AM 73° Mostly Clear
    2. 1 AM 71° Mostly Clear
    3. 2 AM 70° Mostly Clear
    4. 3 AM 69° Mostly Clear
    5. 4 AM 69° Mostly Clear
    6. 5 AM 70° Mostly Clear
    7. 6 AM 71° Sunny
    8. 7 AM 72° Sunny
    9. 8 AM 74° Sunny
    10. 9 AM 78° Sunny
    11. 10 AM 83° Sunny
    12. 11 AM 87° Sunny 1%
    13. 12 PM 89° Sunny 1%
    14. 1 PM 89° Sunny 1%
    15. 2 PM 89° Sunny 1%
    16. 3 PM 89° Sunny 1%
    17. 4 PM 88° Sunny 1%
    18. 5 PM 87° Sunny 2%
    19. 6 PM 85° Mostly Clear 2%
    20. 7 PM 81° Mostly Clear 2%
    21. 8 PM 78° Mostly Clear 2%
    22. 9 PM 75° Mostly Clear 2%
    23. 10 PM 72° Mostly Clear 2%
    24. 11 PM 69° Partly Cloudy 8%
  7. Fri 7/17 Sunny 13% 85° · —
    1. 12 AM 67° Partly Cloudy 8%
    2. 1 AM 66° Partly Cloudy 8%
    3. 2 AM 66° Partly Cloudy 8%
    4. 3 AM 66° Partly Cloudy 8%
    5. 4 AM 66° Partly Cloudy 8%
    6. 5 AM 66° Partly Cloudy 13%
    7. 6 AM 67° Mostly Sunny 13%
    8. 7 AM 68° Mostly Sunny 13%
    9. 8 AM 70° Mostly Sunny 13%
    10. 9 AM 74° Mostly Sunny 13%
    11. 10 AM 78° Mostly Sunny 13%
    12. 11 AM 82° Mostly Sunny 9%
    13. 12 PM 84° Mostly Sunny 9%
    14. 1 PM 84° Mostly Sunny 9%
    15. 2 PM 84° Mostly Sunny 9%
    16. 3 PM 84° Mostly Sunny 9%
Extended outlook days 8–16
  1. Sat 7/18 Partly Cloudy 9% 94° · 68°
  2. Sun 7/19 Mostly Sunny 6% 92° · 67°
  3. Mon 7/20 Sunny 8% 94° · 67°
  4. Tue 7/21 Cloudy 1% 93° · 67°
  5. Wed 7/22 Cloudy 3% 100° · 70°
  6. Thu 7/23 Mostly Sunny 6% 99° · 71°
  7. Fri 7/24 Cloudy 7% 94° · 68°
  8. Sat 7/25 Mostly Sunny 6% 91° · 67°
  9. Sun 7/26 Cloudy 2% — · —

Days 8+ from the Open-Meteo multi-model ensemble — treat as a guide; accuracy drops past day 7.

Best day this week

Mild temps, low rain chance, clearer skies.

Friday, 7/17

Sunny, 85°

  1. Tomorrow86°65°
  2. Mon86°64°
  3. Tue90°67°
  4. Wed92°69°
  5. Thu89°64°
  6. Fri85°

Best time to head outside

Picks the upcoming daytime hour with the most favorable conditions for each activity. Factors in temperature, wind, precipitation timing, and pollen.

  • Run6 AM

    comfortable at 64°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Bike6 AM

    comfortable at 64°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Golf6 AM

    comfortable at 64°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Picnic7 AM

    comfortable at 70°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Magic ShowAnytime

    Any weather is magic show weather. Indoors or out, magic doesn't care.

    Corporate Magician Scott Henderson

How well did we do?

Average miss by lead time.

Each morning we save the day's predicted high/low. As later days arrive, we grade what we said against what the station actually recorded.

Same day
±2°
3 days graded
1 day out
±3°
2 days graded
3 days out
±5°
3 days graded
7 days out
±7°
6 days graded
Day-by-day, 1 day out2 days
  1. Yesterday±4°
    High87°87°0°
    Low62°58°+4°
  2. Tue, Jul 7±2°
    High84°84°0°
    Low61°59°+2°

Climate normals

What weather to expect in Simi Valley

Simi Valley in July typically averages 89° highs and 65° lows, with about 0 days of rain. The hottest stretch is August (average high 92°); the coldest is January (average low 49°). February is the wettest month on average.

MonthAvg highAvg lowRainy days
Jan67°49°5
Feb69°50°7
Mar74°52°6
Apr73°52°6
May78°56°4
Jun84°62°1
Jul89°65°0
Aug92°68°0
Sep88°66°3
Oct82°59°3
Nov71°52°7
Dec71°50°3

Normals derived from the past two years of observations via Open-Meteo's historical archive.

More for Simi Valley

Other cities in California

Detailed forecast (NWS)

Saturday
Patchy fog after 5pm. Mostly cloudy, with a high near 87. South southeast wind 0 to 10 mph.
Sunday
Patchy fog before 11am. Partly sunny, with a high near 86. South southeast wind 0 to 10 mph.
Monday
Mostly sunny, with a high near 86.
Tuesday
Sunny, with a high near 90.

Forecast details

NWS gridpoint
LOX 137,58
Radar station
KVTX
Time zone
America/Los_Angeles
Coordinates
34.269, -118.781