Arcadia weather by month
Arcadia, California, offers a Mediterranean climate that rewards outdoor enthusiasts with mild, sunny days and gentle, cool evenings. Understanding the month‑to‑month variations can help travelers, students, and residents plan everything from picnics to landscaping. Below, we break down the weather patterns for every month, present a handy table, and answer the most frequently asked questions.
January
Arcadia’s winter starts with cool mornings and mild afternoons. Average highs hover around 58 °F (14 °C) while lows dip to 41 °F (5 °C). Rain is the most common precipitation, with occasional light showers peeking from the southern California dry season.
February
Similar to January, February brings cool temperatures and steady rainfall. Averages: 60 °F/42 °F (high/low). The number of rainy days slowly diminishes, setting the stage for a drier spring.
March
Spring arrives with warmer mornings and a drop in rainfall. Average high climbs to 64 °F (18 °C), while the night still feels crisp at 44 °F (7 °C). Light breezes are common.
April
April is the quintessential spring month—temperatures rise, and precipitation declines. Warmth averages 69 °F (21 °C) during the day and 48 °F (9 °C) at night. This period is favored for hiking and outdoor festivals.
May
May transitions into vernal warmth. Highs reach 75 °F (24 °C) with lows around 52 °F (11 °C). Showers become rare, making it prime for early summer road trips.
June
The first month of summer hits full force. Daytime temperatures reach 82 °F (28 °C) and nights settle around 58 °F (14 °C). Cloud cover is minimal, and sunny days dominate.
July
Arcadia’s peak summer month features the hottest weather. Daytime averages 87 °F (31 °C); nighttime cools to 63 °F (17 °C). High pressure systems keep rain off the area.
August
Temperatures remain high, averaging 86 °F (30 °C) during the day and 62 °F (17 °C) at night. This month’s sun and clear skies make it an excellent time for sports and outdoor gatherings.
September
Summer lingers, though a drop in heat begins. Average highs fall to 83 °F (28 °C); lows hover around 60 °F (16 °C). Early September still delivers plenty of sunny afternoons.
October
October brings pleasantly mild days and nights. Daytime highs average 77 °F (25 °C) with nighttime lows around 51 °F (11 °C). The moderate temperatures are ideal for late‑season outdoor adventures.
November
As autumn deepens, temperatures drop significantly. Average highs stand at 68 °F (20 °C); lows shrink to 45 °F (7 °C). Occasional light showers reappear as the dry season ends.
December
The winter month sees the coldest nights in Arcadia. Daytime highs settle to 60 °F (16 °C), while nighttime temperatures dip to 39 °F (4 °C). A few sporadic showers bring a fresh, crisp atmosphere.
Arcadia Weather by Month
| Month | Avg High (°F) | Avg Low (°F) | Avg Precipitation (in) | Avg Humidity (%) |
|---|---|---|---|---|
| January | 58 | 41 | 0.90 | 68 |
| February | 60 | 42 | 0.80 | 66 |
| March | 64 | 44 | 0.70 | 64 |
| April | 69 | 48 | 0.50 | 60 |
| May | 75 | 52 | 0.30 | 56 |
| June | 82 | 58 | 0.15 | 52 |
| July | 87 | 63 | 0.10 | 48 |
| August | 86 | 62 | 0.12 | 49 |
| September | 83 | 60 | 0.20 | 52 |
| October | 77 | 51 | 0.35 | 56 |
| November | 68 | 45 | 0.40 | 62 |
| December | 60 | 39 | 0.60 | 67 |
FAQ
Q1: When is the best time to visit Arcadia for outdoor activities?
A1: Late spring (April‑May) and early summer (June‑July) offer warm days and low rainfall, ideal for hiking, biking, and sports.
Q2: Is Arcadia prone to flooding?
A2: Flooding is rare. Occasional heavy rains in late winter/early spring can cause localized runoff, but no severe flooding historically.
Q3: How does the humidity in Arcadia compare to other Southern California cities?
A3: Humidity usually stays moderate (late spring through early fall) and lower in winter months compared to coastal cities.
Q4: Are there any significant seasonal temperature swings?
A4: Yes, daytime highs can rise from ~58 °F (January) to ~87 °F (July) and night lows drop from 39 °F (December) to 58 °F (June).
Q5: Do I need an umbrella or rain jacket during a visit?
A5: Light rain can occur in winter months, so it’s prudent to carry a compact umbrella. A light windbreaker is helpful in spring and early fall.
Resources
- Arcadia City Official Website – Weather & Climate
- National Weather Service – Arcadia, CA
- California Climate Change Profile – Mid‑Central California
- USDA Plant Hardiness Zone Map
- Weather Underground – Arcadia Historical Weather
Feel free to reach out with any further questions or suggestions. Happy exploring!
