Calexico weather by month

Understanding Calexico’s Climate: Weather by Month

Calexico, a city perched on the U.S.–Mexico border between California and Baja California, boasts a desert‑like climate that changes noticeably throughout the year. Whether you’re planning a vacation, moving to the area, or simply curious about what to expect, this guide breaks down Calexico’s weather by month. It includes average temperatures, precipitation, humidity, sunshine hours, and practical tips for each season. All information is sourced from reliable meteorological data, ensuring you get an accurate picture of the local climate.

Monthly Weather Overview

MonthAvg. High (°F / °C)Avg. Low (°F / °C)Avg. Precipitation (in / mm)Avg. Sunshine (hrs/day)Key Features
January62 °F / 17 °C32 °F / 0 °C0.32 in / 8 mm10.5Cool mornings, warm afternoons.
February64 °F / 18 °C33 °F / 1 °C0.28 in / 7 mm10.8Steady sunshine, mild nights.
March71 °F / 22 °C37 °F / 3 °C0.25 in / 6 mm11.0Early spring heat build‑up.
April81 °F / 27 °C45 °F / 7 °C0.15 in / 4 mm11.3Warm days, cooler evenings.
May92 °F / 33 °C54 °F / 12 °C0.10 in / 3 mm11.5Peak heat starts; very dry.
June100 °F / 38 °C63 °F / 17 °C0.08 in / 2 mm11.6Longest days, intense heat.
July103 °F / 39 °C68 °F / 20 °C0.05 in / 1 mm11.7Hottest month, extremely dry.
August102 °F / 39 °C68 °F / 20 °C0.07 in / 2 mm11.6Heat remains persistent.
September94 °F / 34 °C60 °F / 16 °C0.09 in / 2 mm11.4Heat gradually eases.
October79 °F / 26 °C48 °F / 9 °C0.15 in / 4 mm11.1Mild evenings, cool days.
November65 °F / 18 °C36 °F / 2 °C0.20 in / 5 mm10.7Cool nights, sunny days.
December58 °F / 14 °C30 °F / –1 °C0.30 in / 8 mm10.3Longest nights, mild days.

Climate Highlights:

  • Annual precipitation averages ~1.0 inch, making Calexico one of the driest cities in California.
  • Seasonal highs exceed 100 °F (38 °C) during summer, while winter lows hover near freezing.
  • Average sunshine >11 hours/day year‑round, ideal for outdoor activities.
  • Humidity remains low (<20%–30%) across most months, contributing to comfortable nighttime temperatures.

Seasonal Insights

Spring (March–May)

Spring brings gradual warming, with highs climbing from the low 70s to the high 80s. Rainfall remains minimal but tends to be slightly higher in March. This is an excellent time for hiking and exploring the surrounding desert landscapes.

Summer (June–August)

Summer months are blisteringly hot, often surpassing 100 °F during daylight. The desert can heat up rapidly, so early morning or late‑afternoon activities are recommended. Evening temperatures stay well above 60 °F, so a light jacket remains useful.

Fall (September–November)

Fall sees temperatures cool off steadily, especially at night. September is still warm, but by October the city enjoys mild days and crisp evenings. Light rainfall in October and November may bring a brief, refreshing break.

Winter (December–February)

Winter is generally mild: daytime temperatures rarely dip below 60 °F, while nighttime temperatures can hover around 30–35 °F. Snowfalls are virtually nonexistent, but occasional wind chills can make evenings feel colder.

Practical Tips for Local Residents and Visitors

  • Hydration & Sun Protection: Always carry water, wear a wide‑brimmed hat, and apply SPF 30+ sunscreen when outdoors.
  • Cooling Strategies: Utilize air‑conditioning or fans; take advantage of early mornings or evenings when temperatures are cooler.
  • Outdoor Activity Planning: Avoid midday heat during summer; schedule hikes or outdoor events before 10 am or after 4 pm.
  • Nighttime Comfort: Light layers or a sleeping bag rated for 30 °F are advisable during winter nights.
  • Check weather alerts: the Southwest occasionally experiences brief monsoon‑like storms in late summer, though precipitation is rare.

FAQ – Your Calexico Weather Questions Answered

1. When is the best time to visit Calexico for outdoor activities?

Spring (March‑May) and fall (September‑October) offer comfortable temperatures and lower humidity, ideal for hiking, biking, or exploring desert landscapes.
2. Does Calexico get snow or ice?

Snow is extremely rare; the city never experiences significant snowfall. Light frost may occasionally form, but freezing rain or ice storms are uncommon.
3. How hot does it get in the summer at night?

Even in July and August, nighttime temperatures typically stay between 68 °F and 74 °F (20–23 °C), though they can feel hotter if humidity spikes.
4. What is the driest month in Calexico?

July and August tend to have the lowest precipitation, often showing <0.1 inch per month.
5. Is the morning sunrise bright during winter?

Morning sunrise is usually overcast with some cloud cover, especially from January to March, but the sun rises later (around 7 am) compared to summer.

Resources & Further Reading

With these insights, you can confidently navigate Calexico’s unique climate, plan the right activities for each season, and enjoy the city’s stunning desert scenery year after year.

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