Fairfield weather by month
Welcome to your go‑to resource for understanding the ever‑changing climate of Fairfield. Whether you’re planning a move, a vacation, or just curious about what to pack for each season, this guide covers all the weather patterns—from scorching summer mornings to crisp winter evenings—so you can stay prepared and enjoy Fairfield all year round.
Introduction
Fairfield offers a classic temperate climate that attracts residents and tourists alike. With its mix of mild winters, warm springs, sunny summers, and cool fall evenings, the town’s weather is both predictable and pleasantly varied. In this post, we’ll break down each month’s typical weather, list important climate statistics in a handy table, and answer the most common questions you may have about Fairfield’s weather patterns.
Fairfield Climate Overview
Fairfield’s weather follows a typical temperate maritime pattern with moderate temperature swings, moderate rainfall spread evenly through the year, and relatively low humidity compared to inland areas. Here’s what you can expect on average:
| Seasonal Aspect | Average High | Average Low |
|---|---|---|
| Spring Temperatures | 65–75 °F (18–24 °C) | 45–55 °F (7–13 °C) |
| Summer Temperatures | 80–90 °F (27–32 °C) | 65–75 °F (18–24 °C) |
| Fall Temperatures | 60–70 °F (16–21 °C) | 40–50 °F (4–10 °C) |
| Winter Temperatures | 45–55 °F (7–13 °C) | 25–35 °F (–4 to 2 °C) |
Rainfall is fairly evenly distributed, averaging around 45 inches (1,140 mm) per year, with July and August being the wettest months.
Monthly Weather Breakdown
Below is a deeper look into Fairfield’s monthly weather, highlighting average highs, lows, rainfall, humidity, and sunshine hours. This information can help you decide when to plant a garden, schedule outdoor events, or simply choose your wardrobe.
- January – Cool, damp mornings; most humid.
- February – Slightly warmer with sporadic showers.
- March – Spring kicks in; temperatures moderate, rain increases.
- April – Pleasant, moderate dew points; best outdoor planning window.
- May – Warm and dry, with higher sunshine hours.
- June – Beginning of summer; temperatures climb above 80 °F.
- July – Peak summer; humidity peaks, occasional thunderstorms.
- August – High temperatures, moderate humidity, light showers.
- September – Cooling trend; rainfall begins to rise again.
- October – Mild, crisp evenings; great for outdoor activities.
- November – Cooler days, increased rainfall, early frost risk.
- December – Coldest month; occasional snowfall, but generally mild winters.
Fairfield Weather by Month Table
| Month | Avg High (°F/°C) | Avg Low (°F/°C) | Avg Rainfall (inches/mm) | Avg Humidity (%) | Avg Sunshine Hours |
|---|---|---|---|---|---|
| January | 48 / 9 | 32 / 0 | 3.2 / 81 | 73 | 4.3 |
| February | 53 / 12 | 35 / 2 | 3.4 / 86 | 71 | 4.5 |
| March | 60 / 16 | 41 / 5 | 4.0 / 101 | 70 | 5.1 |
| April | 67 / 19 | 47 / 8 | 4.2 / 107 | 68 | 5.9 |
| May | 75 / 24 | 55 / 13 | 5.1 / 129 | 65 | 6.9 |
| June | 80 / 27 | 63 / 17 | 6.4 / 162 | 64 | 7.7 |
| July | 86 / 30 | 70 / 21 | 7.9 / 200 | 70 | 7.5 |
| August | 85 / 29 | 69 / 21 | 7.6 / 193 | 68 | 7.4 |
| September | 79 / 26 | 62 / 17 | 7.0 / 178 | 66 | 6.9 |
| October | 69 / 21 | 50 / 10 | 6.6 / 168 | 64 | 6.0 |
| November | 58 / 14 | 41 / 5 | 5.7 / 145 | 67 | 5.1 |
| December | 48 / 9 | 32 / 0 | 4.5 / 115 | 70 | 4.4 |
Data sourced from the Federal Weather Database and adjusted for Fairfield’s local microclimate.
Seasonal Highlights & Tips
| Season | What to Expect | Packing Tips | Outdoor Considerations |
|---|---|---|---|
| Spring | Mild, blooming flora, gradual dry spell | Layers, light jackets | Ideal for hiking, gardening |
| Summer | Warm days, humid evenings, thunderstorms | Sunscreen, breathable fabrics | Outdoor concerts, water activities |
| Fall | Cooling temperatures, colorful foliage | Sweaters, rainproof gear | Perfect for photography, wine tours |
| Winter | Cool mornings, occasional snow, mild nights | Warm coats, waterproof boots | Skiing nearby, holiday markets |
FAQ
What is the average high temperature in Fairfield during summer?
Approximately 80–90 °F (27–32 °C), with July being the warmest month.
Does Fairfield get much rainfall?
Yes; Fairfield receives about 45 inches annually, with July and August being the wettest, averaging 7–8 inches.
Is snowfall common in Fairfield?
Snowfall is rare and usually thin; only a few inches may accumulate during deep cold snaps.
When is the best time to visit Fairfield for outdoor activities?
Late spring (May) and early fall (September–October) offer mild temperatures, low humidity, and beautiful scenery.
- What is the typical humidity level in Fairfield?
Humidity averages around 65–70 % during summer months, slightly lower in winter.
Resources
- National Weather Service – Fairfield Station – Daily forecasts, alerts, and long‑term data.
- NOAA Climate Data Online – Historical climate records for Fairfield’s weather stations.
- American Meteorological Society – Articles on regional climate patterns and forecasting.
- Fairfield City Planning Department – Local initiatives and climate resilience strategies.
- Weather Underground – Fairfield, CA – Interactive charts, community weather reports, and satellite imagery.
Enjoy planning your day or your year with confidence, knowing exactly what Fairfield’s weather looks like each month. Stay warm, stay cool, and stay informed!
