Chico receives its highest rainfall in Dec, while humidity peaks during winter months.
🌧️ Wettest:Dec — 174 mm☀️ Driest:Jul — 2 mm
💧 Humidity peaks at 79% in Jan · annual avg 56%
🌍 Climate Summary
Avg Annual Temp:62.2°F
Avg Annual Rainfall:947 mm
Avg Humidity:56%
Data Period:1981 – 2025
Chico Climate Overview
Chico has a warm temperate climate with warm summers and cold winters.
Temperatures peak in Jul and drop to their lowest in Jan,
while rainfall is highest during winter months.
Humidity remains moderate throughout the year, especially during winter months, creating cold and dry conditions.
📈 Yearly Trends
The warmest year in Chico's recorded history was 2021
(avg: 66°F),
while the coldest year was 1982
(avg: 58.6°F),
based on annual average temperatures.
📊 Key Climate Trends
🌡️ Chico's temperature shows a slight warming trend over the past decade
📈 Minimum temperatures show a slight warming trend in recent years
🌧️ Rainfall varies year-to-year without a clear long-term trend
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °F
Chico's temperatures shows a slight warming trend over the past decade.
The highest recorded temperature reached
116.5°F in Jul 2024,
while the lowest dropped to
15.3°F in Dec 1990.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Chico shows noticeable variation. Rainfall varies year-to-year without a clear long-term trend.
Based on 45 years of data (1981–2025), Jul is typically the hottest month in Chico, California, with average high temperatures around 108.3°F.
What is the coldest month in Chico?▼
Jan is the coldest month in Chico, with average low temperatures around 26.6°F.
What is the rainiest month in Chico?▼
Dec receives the most rainfall with approximately 174 mm, while Jul is the driest with 2 mm.
What was the highest temperature ever recorded in Chico?▼
The highest recorded temperature was 116.5°F in Jul 2024. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Chico?▼
The lowest recorded temperature was 15.3°F in Dec 1990.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Chico get?▼
Chico receives the most sunlight in Jul with an average solar radiation of 8.24 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in California.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.