Rohnert Park weather in April

In April, Rohnert Park sees average daytime highs of 64°F and overnight lows near 47°F, with 1.9 in of rain across 5.6 wet days and about 13 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 62°F in the first days to 66°F by the end. The sky is clear or mostly clear about 47% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 30 min by month's end. Set against the rest of the year, April is Rohnert Park's 7th-clearest and 3rd-windiest month. For the whole year in context, see Rohnert Park's year-round climate.

Daytime high
64°
7th warmest
Overnight low
47°
6th coldest
Rainfall
1.9 in
5.6 wet days
Daylight
13 hours
5:41 AM – 6:41 PM
Cloud cover
46%
7th clearest
Wind
7 mph
3rd windiest
Solar energy
6.21 kWh/m²
Travel score
6.5
out of 10

Rohnert Park is city in Sonoma County, California, United States.

Density
2,337/km²
people per km²
Founded
1962

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 62°F in the first days to 66°F by the end.

A typical April day in Rohnert Park reaches about 64°F in the afternoon and slips back to 47°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 56°F and 72°F. Set against its neighbours, April runs about 3°F warmer than March and about 4°F cooler than May.

30°40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16246
26246
36246
46246
56246
66246
76246
86246
96246
106246
116346
126346
136346
146347
156347
166447
176447
186447
196447
206547
216547
226548
236548
246548
256648
266648
276648
286649
296749
306749

Rohnert Park weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan56° / 42°5.410.39.63.9
Feb59° / 43°5.69.310.54.5
Mar61° / 45°4.29.311.75.3
Apr64° / 47°1.95.6136.5
May68° / 50°1.03.314.17.7
Jun73° / 53°0.2114.69.0
Jul75° / 55°0.00.114.49.5
Aug75° / 55°0.00.213.59.5
Sep75° / 54°0.10.512.39.3
Oct71° / 51°1.23.1118.2
Nov62° / 45°2.86.29.95.9
Dec56° / 42°5.510.49.43.9

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25743
35842
45842
55842
65842
75941
85941
96040
106040
116040
126139
136139
146139
156238
166238
176337
186337
196337
206436
216436
226436
236436
246535
256634
266634
276634
286733
296733
306733

Chance of precipitation in April

Any precipitation

Rohnert Park gets around 1.9 in of rain over 5.6 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 23% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
123
223
323
423
522
622
722
823
923
1022
1122
1222
1322
1421
1521
1620
1719
1819
1918
2017
2117
2216
2315
2415
2514
2614
2714
2814
2913
3013

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20982
21982
22982
23982
24982
25982
26982
27982
28982
29982
30982

Wind in April

Winds average 7 mph in April.

Across April, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over April. Sunrise moves from 6:04 AM to 5:22 AM, and sunset from 6:27 PM to 6:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:046:27
212.46:036:28
312.56:016:29
412.56:006:29
512.55:586:30
612.65:566:31
712.65:556:32
812.75:536:33
912.75:526:34
1012.75:506:35
1112.85:496:36
1212.85:476:37
1312.95:466:38
1412.95:446:39
1513.05:436:40
1613.05:416:41
1713.05:406:42
1813.15:386:43
1913.15:376:44
2013.25:356:45
2113.25:346:46
2213.25:336:47
2313.35:316:48
2413.35:306:49
2513.35:296:49
2613.45:276:50
2713.45:266:51
2813.55:256:52
2913.55:236:53
3013.55:226:54

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.21 kWh/m².

For context, solar energy here swings from a low near 2.11 kWh/m² to a high of 7.93 kWh/m² in June across the year — April's 6.21 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.8Bright
85.8Bright
95.9Bright
105.9Bright
116.0Bright
126.0Intense
136.1Intense
146.1Intense
156.2Intense
166.2Intense
176.3Intense
186.3Intense
196.4Intense
206.4Intense
216.5Intense
226.5Intense
236.6Intense
246.6Intense
256.6Intense
266.7Intense
276.7Intense
286.8Intense
296.8Intense
306.8Intense
Planning a trip in April

Hazard calendar for Rohnert Park

In seasonPeak

None of Rohnert Park's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Rohnert Park's rainy season runs November–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Rohnert Park?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5
Sightseeing
7th-best month of the year
2.0
Beach & pool
7th-best month of the year

April is a reasonable time to visit Rohnert Park for sightseeing.

What to pack for Rohnert Park in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Rohnert Park sees daytime highs around 64°F and nights near 47°F. Pack sun protection. About 6 days see rain.

sun protection

Sea temperature near Rohnert Park in April

The nearest coast averages about 51°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 23 mi away) is warmest in September at about 55°F and coldest in May near 51°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

50°52°54°56°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan53Bracing
Feb53Bracing
Mar53Bracing
Apr51Bracing
May51Bracing
Jun51Bracing
Jul53Bracing
Aug54Bracing
Sep55Bracing
Oct55Bracing
Nov54Bracing
Dec53Bracing

UV index in Rohnert Park in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rohnert Park peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 17UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low

Air quality in Rohnert Park in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Rohnert Park is worst in September — around 24 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (June, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1623 µg/m³Jun 116 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar9Good
Apr7Good
May7Good
Jun6Good
Jul9Good
Aug17Moderate
Sep24Moderate
Oct16Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Rohnert Park?

Rohnert Park sits at 38.3°N, 122.7°W, 105 ft above sea level, in United States. The nearest listed city is Santa Rosa, 6.8 mi away.

Topography around Rohnert Park

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Rohnert Park.

Within 2 miles, the terrain around Rohnert Park has only modest variations in elevation — a maximum elevation change of 253 ft around an average of 128 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,457 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,895 ft.

The land around Rohnert Park is covered by artificial surfaces (47%) and grassland (23%) within 2 miles, grassland (47%) and trees (28%) within 10 miles, and trees (34%), water (31%) and grassland (24%) within 50 miles.

2 miles
253 ft
10 miles
2,457 ft
50 miles
4,895 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
April weather nearby: Santa Rosa 6.8 mi · Petaluma 8.1 mi · Agua Caliente 12 mi · Windsor 16 mi · Novato 17 mi · Napa 23 mi · American Canyon 27 mi · San Rafael 27 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Rohnert Park (38.3396°, -122.7011°, elevation 105 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).